
样式: 排序: IF: - GO 导出 标记为已读
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Multi-frequency formation mechanism and modulation strategy of self-priming enhanced submerged pulsed waterjet Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2025-01-31 Yanwei Liu, Haojie Jia, Weiqin Zuo, Hongkai Han, Ping Chang, Mohammad Waqar Ali Asad, Guozhong Hu, Jian Miao, Hani S. Mitri
Under submerged conditions, compared with traditional self-excited oscillating pulsed waterjets (SOPWs), annular fluid-enhanced self-excited oscillating pulsed waterjets (AFESOPWs) exhibit a higher surge pressure through self-priming. However, their pressure frequency and cavitation characteristics remain unclear, resulting in an inability to fully utilize resonance and cavitation erosion to break
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Quantitative principles of dynamic interaction between rock support and surrounding rock in rockburst roadways Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2025-01-24 Lianpeng Dai, Dingjie Feng, Yishan Pan, Aiwen Wang, Ying Ma, Yonghui Xiao, Jianzhuo Zhang
Rockbursts, which mainly affect mining roadways, are dynamic disasters arising from the surrounding rock under high stress. Understanding the interaction between supports and the surrounding rock is necessary for effective rockburst control. In this study, the squeezing behavior of the surrounding rock is analyzed in rockburst roadways, and a mechanical model of rockbursts is established considering
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Theoretical and experimental study on high-entropy flotation of micro-fine cassiterite Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2025-01-21 Shuming Wen, Yongchao Miao, Yanyu Tang, Zhengyong Song, Qicheng Feng
Tin is a critical metal for various industries, making its recovery from low-grade cassiterite ores crucial. This study aimed to optimize the flotation recovery of cassiterite using multi-component collector systems. Several collectors were initially selected through micro-flotation tests, leading to the identification of optimal proportions for a four-component collector system (SHA-OHA-SPA-DBIA in
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Deformation energy of tectonic coal under hydrostatic conditions: A new calculation model based on critical state theory Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2025-01-21 Chenghao Wang, Haisong Liu, Yuanping Cheng, Liang Wang, Jingyu Jiang
The deformation energy (Wd) of soil-like tectonic coal is crucial for investigating the mechanism of coal and gas outbursts. Tectonic coal has a significant nonlinear constitutive relationship, which makes traditional elastic-based models for computing Wd unsuitable. Inspired by critical state soil mechanics, this study theoretically established a new calculation model of Wd suitable for the coal with
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Life cycle dynamic formation temperature response and thermal energy extraction of mine geothermal system considering groundwater flow Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2025-01-20 Xibing Li, Zhiying Chen, Linqi Huang, Botao Li, Jingyi Yan, Peilei Zhang, Zhixiang Liu
As mining activities expand deeper, deep high-temperature formations seriously threaten the future safe exploitation, while deep geothermal energy has great potential for development. Combining the formation cooling and geothermal mining in mines to establish a thermos-hydraulic coupling numerical model for fractured formation. The study investigates the formation heat transfer behaviour, heat recovery
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Study and application of the influence of inclination angle on the cross-fusion mechanism of high gas thick coal seam Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2025-01-18 Pengxiang Zhao, Zechen Chang, Shugang Li, Risheng Zhuo, Yongyong Jia, Qiudong Shao, Wen Lei
In this study, to better decide the effect of coal seam dip angle upon the dynamic change of the cross-fusion in gas transport and storage areas during the progress of working face in the high gas thick coal seam, a two-dimensional physical simulation experiment regarded as the theoretical research was conducted to properly explore the variation law of overburden fracture. The results demonstrated
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Yielding performance of compact yielding anchor cable in working state: Analytical theory and experimental evaluation of yielding resistance enhancement effect Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2025-01-16 Zhenyu Wang, Bo Wang, Xinxin Guo, Jinjin Li, Zhenwang Ma
To elucidate the yielding performance of compact yielding anchor cables in working state, a yielding mechanical model incorporating extrusion friction and fastening rotation under confining pressure is constructed. The yielding resistance enhancement effect (ω) caused by working environment constraints is evaluated through multi-layer composite sleeve hole expansion analysis, forming a theoretical
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Dynamic damage characteristics and control mechanism of rocks anchored by constant resistance and energy absorption material Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2025-01-10 Bei Jiang, Kunbo Wu, Qi Wang, Yetai Wang, Wenrui Wu, Yaoxia Feng, Yanbo Zhang
With resource exploitation and engineering construction gradually going deeper, the surrounding rock dynamic disaster becomes frequent and violent. The anchorage support is a common control method of surrounding rock in underground engineering. To study the dynamic damage characteristics of anchored rock and the energy absorption control mechanism of dynamic disasters, a new type of constant resistance
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Fatigue properties and constitutive model of Jintan salt rock subjected to complex cyclic loading Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2025-01-07 Qingchuan He, Jianfeng Liu, Fei Wu, Cunbao Li, Jie Chen, Renbo Gao, Chunfeng Ye, Shijie Zhu
Salt cavern energy storage technology contributes to energy reserves and renewable energy scale-up. This study focuses on salt cavern gas storage in Jintan to assess the long-term stability of its surrounding rock under frequent operation. The fatigue test results indicate that stress holding significantly reduces fatigue life, with the magnitude of stress level outweighing the duration of holding
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Uncovering the oxidation mechanism of sphalerite (ZnS) in the absence and presence of water: A first-principles investigation Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2025-01-06 Yuanjia Luo, Wei Sun, Haisheng Han, Jian Peng, Feng Jiang
Herein, a first-principles investigation was innovatively conducted to research the surface oxidation of ZnS-like sphalerite in the absence and presence of H2O. The findings showed that single O2 was preferred to be dissociated adsorption on sphalerite surface by generating SO and ZnO bonds, and the S atom on the surface was the most energy-supported site for O2 adsorption, on which a ZnOSOZn structure
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Geostatistics-block-based characterization of the relationship between rock mass quality and powder factor and its application on open-pit limit optimization Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-12-27 Jinduo Li, Tianhong Yang, Feiyue Liu, Shigui Du, Wenxue Deng, Yong Zhao, Honglei Liu, Leilei Niu, Zhiqiang Xu
Accurately predicting the powder factor during blasting is essential for sustainable production planning in low-grade mines. This research presents a method for predicting powder factor based on the heterogeneity of rock mass rating (RMR). Considering a low-grade metal mine as an example, this study exploited geostatistical methods to obtain independent RMR for each block unit. A three-dimensional
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Ensemble prediction modeling of flotation recovery based on machine learning Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-12-17 Guichun He, Mengfei Liu, Hongyu Zhao, Kaiqi Huang
With the rise of artificial intelligence (AI) in mineral processing, predicting the flotation indexes has attracted significant research attention. Nevertheless, current prediction models suffer from low accuracy and high prediction errors. Therefore, this paper utilizes a two-step procedure. First, the outliers are processed using the box chart method and filtering algorithm. Then, the decision tree
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An innovative test method for mechanical properties of sandstone under instantaneous unloading confining pressure Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-12-17 Xuesheng Liu, Shenglong Yang, Yunliang Tan, Jun Wang, Xuebin Li, Yu Zhang
With the increase of underground engineering construction depth, the phenomenon of surrounding rock sudden failure caused by supporting structure failure occurs frequently. The conventional unloading confining pressure (CUCP) test cannot simulate the plastic yielding and instantaneous unloading process of supporting structure to rock. Thus, a high stress loading-instantaneous unloading confining pressure
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Improving recovery in sublevel top coal caving mining by using partially reverse drawing technique Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-12-17 Jinwang Zhang, Dongliang Cheng, Jiachen Wang, Shengli Yang, Xiaohang Wan, Xinyang Li
The sublevel top coal caving (SLTCC) mining technology is extensively employed in steeply inclined thick coal seams. Because of the typical characteristics of the short coal face in this mining method, a significant portion of the top coal is lost at the face end. For reducing the coal loss, the partially reverse drawing technique (PRDT) is proposed as a novel top coal drawing technique. Meanwhile
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Enhancing mine groundwater system prediction: Full-process simulation of mining-induced spatio-temporal variations in hydraulic conductivities via modularized modeling Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-12-14 Shihao Meng, Qiang Wu, Yifan Zeng, Leiyu Gu
The intricate interplay between rock mechanics and fracture-induced fluid flow during resource extraction exerts profound effects on groundwater systems, posing a pivotal challenge for promoting green and safe development in underground engineering. To address this, a novel numerical model with an explicit coupling simulation strategy is presented. This model integrates distinct modules for individual
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Combining first principles and machine learning for rapid assessment response of WO3 based gas sensors Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-12-12 Ran Zhang, Guo Chen, Shasha Gao, Lu Chen, Yongchao Cheng, Xiuquan Gu, Yue Wang
The rapid advancement of gas sensitive properties in metal oxides is crucial for detecting hazardous gases in industrial and coal mining environments. However, the conventional experimental trial and error approach poses significant challenges and resource consumption for the high throughput screening of gas sensitive materials. Consequently, this paper introduced a novel screening approach that integrates
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Flexible coal-derived carbon fibers via electrospinning for self-standing lithium-ion battery anodes Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-12-12 Baolin Xing, Weibo Meng, Hao Liang, Weiwei Kang, Huihui Zeng, Chuanxiang Zhang, Ishioma Laurene Egun, Peng Li, Yijun Cao, Zhengfei Chen
A series of flexible and self-standing coal-derived carbon fibers (CCFs) were fabricated through electrospinning coupled with carbonization using bituminous coal and polyacrylonitrile (PAN) as the carbon precursors. These CCFs were utilized as free-standing lithium-ion battery (LIB) anodes. Optimizing carbonization temperature reveals that the CCFs exhibit a one-dimensional solid linear structure with
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Failure mechanisms of roadways with non-coplanar axial direction and stress space: True triaxial test and mechanical analysis Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-12-12 Zongyu Ma, Jianping Zuo
The axial direction of a roadway often forms a certain spatial angle with the in-situ stress field. Variations in the spatial angles can lead to differences in the stress environment in which the roadway is exposed. Different forms of failure characteristics occur in the roadway. In order to study the failure mechanism with different spatial characteristics, rock-like material specimens with holes
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Accumulated damage failure mechanism of anchoring structures under cyclic impact disturbance Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-12-12 Peng Wang, Nong Zhang, Jiaguang Kan, Qun Wei, Zhengzheng Xie, Aoran Li, Zhe He, Jinghua Qi, Xingliang Xu, Changrui Duan
Cyclic impact induces ongoing fatigue damage and performance degradation in anchoring structures, serving as a critical factor leading to the instability of deep roadways. This paper takes the intrinsic spatiotemporal relationship of macro-microscopic cumulative damage in anchoring structures as the main thread, revealing the mechanism of bearing capacity degradation and progressive instability of
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A novel sulfidization system for enhancing hemimorphite flotation through Cu/Pb binary metal ions Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-12-10 Qicheng Feng, Yingchao Zhang, Ga Zhang, Guang Han, Wenjuan Zhao
The low reactivity of hemimorphite surfaces hinders the effective action of sulfidizing agents and xanthate, resulting in unsatisfactory flotation performance. To enhance the surface reactivity of hemimorphite with sulfidizing agents and xanthate, Cu/Pb binary metal ions were introduced into the sulfidization flotation system to enhance the sulfidization process and thereby promote hemimorphite flotation
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Selective flocculation-flotation of ultrafine hematite from clay minerals under asynchronous flocculation regulation Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-12-10 Fusheng Niu, Yuying Chen, Jinxia Zhang, Fei Liu, Ziye Wang
The clay mineral flocculation encapsulation poses a major technical challenge in the field of fine mineral separation. Enhancing the ability to separate clay minerals from target mineral surfaces is key to addressing this issue. In the flotation process of ultrafine hematite, sodium polyacrylate (PAAS) was used as a selective flocculant for hematite, polyaluminum chloride (PAC) as a flocculant for
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Experimental investigation on the macro-mechanical behavior and micromechanical damage model of Xiyu conglomerate with pores and inclusions under triaxial compression Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-12-10 Yajun Cao, Xuelei Duan, Wei Wang, Qizhi Zhu, Dengfeng Zhao, Long Jiang, Qiang Zhang
The complex and special mechanical properties of Xiyu conglomerate are of great significance to the construction of water conservancy and hydropower engineering. The crack characteristic stress, dilatancy behavior, and failure mechanism of Xiyu conglomerate collected from Momoke Water Control Project, southwestern China, were analyzed and discussed based on the experimental results of triaxial compression
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Influence mechanism of Fe3+ doping on the hydrophobic regulation of kaolinite/water interface: Experiments and MD simulations Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-12-10 Jun Chen, Huanhuan Shang, Yunjia Ling, Feifei Jia, Yali Cheng, Fanfei Min
The surface/interfacial reactivity of clay is a critical factor influencing the sedimentation of coal slurry water. To achieve efficient sedimentation of coal slurry water, this paper introduces a novel approach that regulates the hydrophobicity of defective active sites in clay minerals. Fe3+-doped kaolinite (Fe3+-Kao) was synthesized by hydrothermal methods. Subsequently, tests were conducted on
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A new scientific explanation to rock fracture-induced electromagnetic radiation process Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-12-09 Xueqiu He, Xianghui Tian, Zhenlei Li, Menghan Wei, Majid Khan, Liming Qiu, Shengquan He, Ting Ren, Hani Mitri, Dazhao Song
The electromagnetic radiation (EMR) monitoring and early warning technology has experienced decades of successful applications for worldwide coal and rock dynamic disasters, yet a fundamental model unifying physical mechanism and generation process for EMR is still lacking. The effective revealing of EMR’s mechanism is crucial for dynamic disaster control and management. With this motive, a multi-scale
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Enhancing CO2 mitigation potential and mechanical properties of shotcrete in underground mining utilizing microbially induced calcium carbonate precipitation Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-12-07 Qiusong Chen, Xinyi Yuan, Aixiang Wu, Yikai Liu
Achieving low-carbon development in the mining sector is fundamental for global carbon emissions abatement, especially considering the growing demand for mineral resources. Currently, the energy footprint of mines emerges as the main carbon contributor. While cleaner energy sources have the potential for reducing emissions, transitioning to these sources remains challenging. This study presents a practical
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Advancing green flotation: Separation of Cu-Pb minerals through the application of eco-friendly organic double reaction group depressant Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-12-06 Siqi Yang, Xianping Luo, Rufeng Chen, Louyan Shen, Xun Fan, Jiancheng Miao, Xuekun Tang
Achieving efficient flotation separation of chalcopyrite and galena while maintaining environmental friendliness poses a challenge. This study utilized the environmentally friendly copolymer acrylic acid-2-acrylamide-2-methylpropanesulfonic acid (AA/AMPS) as a depressant to separate chalcopyrite and galena. Flotation tests revealed a significant reduction in galena recovery when AA/AMPS was employed
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Utilizing spatio-temporal feature fusion in videos for detecting the fluidity of coal water slurry Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-12-06 Meijie Sun, Ziqi Lv, Zhiqiang Xu, Haimei Lv, Yanan Tu, Weidong Wang
The fluidity of coal-water slurry (CWS) is crucial for various industrial applications such as long-distance transportation, gasification, and combustion. However, there is currently a lack of rapid and accurate detection methods for assessing CWS fluidity. This paper proposed a method for analyzing the fluidity using videos of CWS dripping processes. By integrating the temporal and spatial features
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Evaluation of the migration and environmental effects of metal elements within cementitious gangue-fly ash backfill in underground coal mines Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-12-04 Xuejie Deng, Yuan Jiao, Shicong Li, Nan Zhou, Yan An, Erol Yilmaz, Qingxue Zheng, Xifeng Liang
Cementitious gangue-fly ash backfill (CGB) is used as a green mining technology worldwide. However, under the coupled effects of geological stress and groundwater, the metal elements in the CGB tend to migrate into nearby strata, which can consequently result in pollution of the groundwater environment. In this paper, the influence of initial pH and stress damage on the migration behavior of metal
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Enhancement of 2-hydroxy-3-naphthyl hydroxamic acid adsorption on bastnaesite and monazite surfaces using H2O2 pre-oxidation for improved flotation process Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-11-30 Weiwei Wang, Zhengyao Li, Anhua Zou, Kai Gao, Weiyao Zhu, Shaochun Hou, Chunlei Guo, Yuanyuan Wang
Rare earth elements have been widely applied in various sectors. Bastnaesite and monazite are crucial rare earth minerals, and flotation is a vital technique for recovering fine-grained rare earth minerals and separating them from associated gangue minerals such as fluorite and apatite. Flotation collectors play a key role in selectively adsorbing valuable minerals, enhancing their surface hydrophobicity
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Experimental study on permeability evolution of deep high-stressed coal under major horizontal stress unloading paths Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-11-22 Chao Liu, Jiahao Zhang, Songwei Wu, Jinghua Qi, Beichen Yu, Liang Wang
Both bulk stress (σii) and stress path (SP) significantly affect the transportation characteristics of deep gas during reservoir pressure depletion. Therefore, the experimental study of horizontal stress unloading on seepage behavior of gas-bearing coal under constant σii-constraints is performed. The results show that coal permeability is affected by horizontal stress anisotropy (σH≠σh), and the contribution
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Instability mechanisms of slope in open-pit coal mines: From physical and numerical modeling Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-11-19 Guanghe Li, Zihuan Hu, Dong Wang, Laigui Wang, Yanting Wang, Lichun Zhao, Hongjun Jia, Kun Fang
The stability of open-pit mine slopes is crucial for safe and efficient mining operations. However, the presence of weak interlayers poses significant challenges in maintaining the stability of slopes. To explore the impact of the rock arching effect on slopes during excavation, understand the deformation zones and evaluation stages in such environments, and analyze the formation and characteristics
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Experimental investigation of methane explosion fracturing in bedding shales: Load characteristics and three-dimensional fracture propagation Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-11-14 Yu Wang, Cheng Zhai, Ting Liu, Jizhao Xu, Wei Tang, Yangfeng Zheng, Xinyu Zhu, Ning Luo
Methane in-situ explosion fracturing (MISEF) enhances permeability in shale reservoirs by detonating desorbed methane to generate detonation waves in perforations. Fracture propagation in bedding shale under varying explosion loads remains unclear. In this study, prefabricated perforated shale samples with parallel and vertical bedding are fractured under five distinct explosion loads using a MISEF
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Shear failure behaviors and degradation mechanical model of rockmass under true triaxial multi-level loading and unloading shear tests Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-11-12 Zhi Zheng, Ronghua Li, Pengzhi Pan, Jinghua Qi, Guoshao Su, Hong Zheng
The redistribution of three-dimensional (3D) geostress during underground tunnel excavation can easily induce to shear failure along rockmass structural plane, potentially resulting in engineering disasters. However, the current understanding of rockmass shear behavior is mainly based on shear tests under 2D stress without lateral stress, the shear fracture under 3D stress is unclear, and the relevant
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Study of methane and carbon dioxide adsorption-desorption hysteresis in coals from Sydney Basin: A theoretical and experimental approach Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-11-08 Zhongbei Li, Ting Ren, Yuanping Cheng, Xueqiu He, Ming Qiao, Dennis Black, Kun Li, Jan Nemcik
Methane (CH4) and carbon dioxide (CO2) are primary components of coal seam gas (CSG). Understanding their adsorption-desorption hysteresis characteristics, along with the fundamental mechanism, is crucial for CSG exploitation and related hazards mitigation. This research focused on the representative Bulli coal seam in the Sydney Basin, Australia. Through the purpose-built indirect gravimetric high-pressure
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A universal direct tensile testing method for measuring the tensile strength of rocks Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-11-07 Yang Wu, Jianfeng Liu, Zhide Wu, Junjie Liu, Yonghui Zhao, Huining Xu, Jinbing Wei, Wen Zhong
There is limited applicability to the current method for testing the direct tensile strength of rocks because it places stringent requirements on the testing equipment. This work suggests a universal method based on the “compression-to-tension” idea in response to these difficulties. By applying pressure, this technique makes it possible to test the tensile strength of rocks directly with any conventional
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Exploring the mechanism of a novel cationic surfactant in bastnaesite flotation via the integration of DFT calculations, in-situ AFM and electrochemistry Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-11-05 Chang Liu, Longhua Xu, Jiushuai Deng, Zhiguo Han, Yi Li, Jiahui Wu, Jia Tian, Donghui Wang, Kai Xue, Jinmei Fang
Effectively separating bastnaesite from calcium-bearing gangue minerals (particularly calcite) presents a formidable challenge, making the development of efficient collectors crucial. To achieve this, we have designed and synthesized a novel, highly efficient, water-soluble cationic collector, N-dodecyl-isopropanolamine (NDIA), for use in the bastnaesite-calcite flotation process. Density functional
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Research progress on the adaptability of lunar regolith simulant-based composites and lunar base construction methods Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-11-05 Bo Liu, Peng Sun, Wei Yao, Tao Li, Wei Xu
The development and utilization of lunar resources are entering a critical stage. Immediate focus is needed on key technologies for in-situ resource utilization (ISRU) and lunar base construction. This paper comparatively analyzes the basic characteristics of lunar regolith samples returned from Chang’e-5 (CE-5), Apollo, and Luna missions, focusing on their physical, mechanical, mineral, chemical,
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Electromagnetic radiation of granite under dynamic compression Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-11-04 Juncheng Li, Qingming Zhang, Zhixiang Liu, Renrong Long, Xianzhe Zhong, Wenjin Liu, Mingze Wu, Xin Hu, Jinlong Xu, Jiankang Ren, Wei Wei, Qiang Liu, Keqin Zheng, Haozhe Liang
To elucidate the characteristics and mechanism of electromagnetic radiation in granite under impact loading, based on the quasi-static compression tests, this paper conducts dynamic compression experiments on granite using Hopkinson pressure bar and one-stage light-gas gun as loading methods. Combined with experimental and theoretical analyses, the relationship between mechanical and electromagnetic
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Crystal structure transformation and lattice impurities migration of quartz during chlorine roasting Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-11-02 Wenda Guo, Haolong Lu, Zhenyue Zhang, Ling Jiang, Hanjun Wu, Defeng Liu, Ruan Chi
To investigate the effect of chlorine roasting on the migration and removal of trace elements in quartz lattice, firstly, an efficient pretreatment process, grinding–HCl washing–flotation–HF and HCl leaching, was used to remove the gangue minerals in quartz ore to obtain purified quartz for the preparation of high-purity quartz and the investigation of lattice impurities migration. The results showed
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Spatio-temporal evolution of pore and fracture structures in coal induced by initial damage and creep behavior: A real-time NMR-based approach Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-10-22 Lei Zhang, Yimeng Wang, Mingzhong Gao, Wenhao Jia, Senlin Xie, Wei Hou, Xiangyu Wang, Hao Zhang
Understanding the impact of mining disturbances and creep deformation on the macroscopic deformation and the microscopic pore and fracture structures (MPFS) of coal is paramount for ensuring the secure extraction of coal resources. This study conducts cyclic loading-unloading and creep experiments on coal using a low-field nuclear magnetic resonance (NMR) experimental apparatus which is equipped with
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Formation of Tianwen-1 landing crater and mechanical properties of Martian soil near the landing site Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-10-05 Xinshuo Chen, Zhaobin Zhang, Juan Li, Shouding Li, Tao Xu, Bo Zheng, Xiukuo Sun, Yanfang Wu, Yiming Diao, Xiao Li
After landing in the Utopia Planitia, Tianwen-1 formed the deepest landing crater on Mars, approximately 40 cm deep, exposing precious information about the mechanical properties of Martian soil. We established numerical models for the plume-surface interaction (PSI) and the crater formation based on Computational Fluid Dynamics (CFD) methods and the erosion model modified from Roberts’ Theory. Comparative
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Development and characterization of a regional lunar soil simulant for emirates lunar missions Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-10-02 Bo Peng, Prabu Thannasi, Waleed El-Sekelly, Tarek Abdoun, Kemal Celik
Lunar soil simulants (LSS) have been pivotal in the success of past and current lunar missions. They have enhanced the design of lander and rover wheels through interaction studies on the lunar testbed under simulated environmental conditions. They have also been used to evaluate the geotechnical, geomechanical, and dynamic characteristics of the lunar soil (LS), which is vital for future lunar outposts
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Design, test, and verification of in-situ condition preserved coring and analysis system in lunar-based simulation environment Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-10-02 Haichun Hao, Mingzhong Gao, Yan Wu, Zheng Gao, Yongcheng Li, Xuemin Zhou, Peng Chu, Xuan Wang, Jiahua Li, Lang Zhou, Jie Song, Tianxiang Ao, Yikun Yang
The lunar surface and its deep layers contain abundant resources and valuable information resources, the exploration and exploitation of which are important for the sustainable development of the human economy and society. Technological exploration and research in the field of deep space science, especially lunar-based exploration, is a scientific strategy that has been pursued in China and worldwide
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A novel molybdenite depressant for efficient selective flotation separation of chalcopyrite and molybdenite Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-09-21 Mengyao Qi, Weijun Peng, Wei Wang, Yijun Cao, Longyu Zhang, Yukun Huang
A novel small molecule depressant (M-DEP) was used to separate chalcopyrite and molybdenite via flotation. The results showed that M-DEP had an excellent selective depression on molybdenite, while had little effect on the flotation of chalcopyrite. The adsorption capacity of M-DEP on the surface of molybdenite was greater than that on chalcopyrite surface. The adsorption of M-DEP reduced the floatability
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Multistage hydraulic fracturing of a horizontal well for hard roof related coal burst control: Insights from numerical modelling to field application Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-09-21 Jiaxin Zhuang, Zonglong Mu, Wu Cai, Hu He, Lee J. Hosking, Guojun Xi, Biao Jiao
Multistage hydraulic fracturing of horizontal wells (MFHW) is a promising technology for controlling coal burst caused by thick and hard roofs in China. However, challenges remain regarding the MFHW control mechanism of coal burst and assessment of the associated fracturing effects. In this study, these challenges were investigated through numerical modelling and field applications, based on the actual
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A statistical damage-based constitutive model for shearing of rock joints in brittle drop mode Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-09-21 Xinrong Liu, Peiyao Li, Xueyan Guo, Xinyang Luo, Xiaohan Zhou, Luli Miao, Fuchuan Zhou, Hao Wang
Some rock joints exhibit significant brittleness, characterized by a sharp decrease in shear stress upon reaching the peak strength. However, existing models often fail to accurately represent this behavior and are encumbered by numerous parameters lacking clear mechanical significance. This study presents a new statistical damage constitutive model rooted in both damage mechanics and statistics, containing
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Development and characterization of the PolyU-1 lunar regolith simulant based on Chang’e-5 returned samples Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-09-19 Yuan Zou, Huanyu Wu, Shupeng Chai, Wei Yang, Renhao Ruan, Qi Zhao
Leading national space exploration agencies and private enterprises are actively engaged in lunar exploration initiatives to accomplish manned lunar landings and establish permanent lunar bases in the forthcoming years. With limited access to lunar surface materials on Earth, lunar regolith simulants are crucial for lunar exploration research. The Chang’e-5 (CE-5) samples have been characterized by
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NMR-based analysis of the effect of moisture migration on sandstone pore structure under alternating wetting and drying conditions Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-09-19 Huasu Wang, Jing Bi, Yu Zhao, Chaolin Wang, Jiabao Ma
The wetting-drying (W-D) cycle is a type of water–rock interaction. The pore structure of rock, such as shape, size, distribution and pore throat, affects fluid storage and transport. Fractal theory and experimental research on the evolution characteristics of pore damage during the wet-dry erosion process are highly important for determining W-D damage. The mass and velocity of liquid migration are
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Predicting the probability distribution of Martian rocks mechanical property based on microscale rock mechanical experiments and accurate grain-based modeling Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-09-14 Shuohui Yin, Yingjie Wang, Jingang Liu
The exploration of Mars would heavily rely on Martian rocks mechanics and engineering technology. As the mechanical property of Martian rocks is uncertain, it is of utmost importance to predict the probability distribution of Martian rocks mechanical property for the success of Mars exploration. In this paper, a fast and accurate probability distribution method for predicting the macroscale elastic
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Anchoring mechanical characteristics of Ductile-Expansion bolt Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-09-12 Yu Chen, Wang Liu, Linchong Huang, Hang Lin, Yixian Wang, Yanlin Zhao, Cungang Lin
The application of ductile rock bolts has been a crucial method for solving the problems of large deformations, energy absorption and stability control issues in deep rock masses. To study the anchoring mechanism of the key expansive structure, this paper proposes a novel type of bolt — the Ductile-Expansion bolt, and conducts research on anchoring mechanics, energy absorption characteristics, and
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A new deformable cable for rock support in high stress tunnel: Steel pipe shrinkable energy-absorbing cable Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-09-12 Xuezhen Wu, Mingzhu Zhao, Qing Ye, Yujing Jiang, Tao Deng, Hanfang Zheng, Gang Wang, Zhenchang Guan
High stress in surrounding rock will lead to serious problems, e.g., rock burst in hard rock and large deformation in soft rock. The applied support system under high in-situ stress conditions should be able to carry high load and also accommodate large deformation without experiencing severe damage. In this paper, a specially designed energy-absorbing component for rock bolt and cable that can solve
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Extraction of the key infrared radiation temperature features concerning stress and crack evolution of loaded rocks Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-09-12 Wei Liu, Liqiang Ma, Michel Jaboyedoff, Marc-Henri Derron, Qiangqiang Gao, Fengchang Bu, Hai Sun
The infrared radiation temperature (IRT) variation concerning stress and crack evolution of rocks is a critical focus in rock mechanics domain and engineering disaster warning. In this paper, a methodology to extract the key IRT features related to stress and crack evolution of loaded rocks is proposed. Specifically, the wavelet denoising and reconstruction in thermal image sequence (WDRTIS) method
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Micromechanical testing and property upscaling of planetary rocks: A critical review Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-09-07 Yiwei Liu, Guoping Zhang, Jiangmei Qiao, Xuhai Tang
Knowledge of the mechanical behavior of planetary rocks is indispensable for space explorations. The scarcity of pristine samples and the irregular shapes of planetary meteorites make it difficult to obtain representative samples for conventional macroscale rock mechanics experiments (macro-RMEs). This critical review discusses recent advances in microscale RMEs (micro-RMEs) techniques and the upscaling
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Influence mechanism of government subsidy on the green transformation of coal company in China Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-09-05 Xiaolei Li, Changsong Wu
The optimization of government subsidies to enhance the efficiency of coal companies’ green transformation constitutes a critical component in the pursuit of global sustainability. We investigate the influence mechanism of government subsidies on the green transformation using data from the listed coal companies in China from 2007 to 2022. According to our findings and hypothesis testing, previous
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Machine learning applications on lunar meteorite minerals: From classification to mechanical properties prediction Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-09-03 Eloy Peña-Asensio, Josep M. Trigo-Rodríguez, Jordi Sort, Jordi Ibáñez-Insa, Albert Rimola
Amid the scarcity of lunar meteorites and the imperative to preserve their scientific value, non-destructive testing methods are essential. This translates into the application of microscale rock mechanics experiments and scanning electron microscopy for surface composition analysis. This study explores the application of Machine Learning algorithms in predicting the mineralogical and mechanical properties
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A cleaner production strategy for acid mine drainage prevention of waste rock: A porphyry copper case Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-09-03 Yesica L. Botero, Isabelle Demers, Luis A. Cisternas, Arnoldo Ávila, Mostafa Benzaazoua
An in-process technology approach is proposed to identify the source of acid mine drainage (AMD) generation and prevent its formation in a porphyry copper waste rock (WR). Adopting actions before stockpiling the WR enables the establishment of potential contaminants and predicts the more convenient method for AMD prevention. A WR sample was separated into size fractions, and the WR’s net acid-generating
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A new elastoplastic model for bolt-grouted fractured rock Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-08-31 Haoyi Li, Shuangying Zuo, Peiyuan Lin
Complexities in mechanical behaviours of rock masses mainly stem from inherent discontinuities, which calls for advanced bolt-grouting techniques for stability enhancement. Understanding the mechanical properties of bolt-grouted fractured rock mass (BGFR) and developing accurate prediction methods are crucial to optimize the BGFR support strategies. This paper establishes a new elastoplastic (E-P)
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Failure evolution and disaster prediction of rock under uniaxial compression based on non-extensive statistical analysis of electric potential Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-08-24 Tiancheng Shan, Zhonghui Li, Haishan Jia, Enyuan Wang, Xiaoran Wang, Yue Niu, Xin Zhang, Dong Chen, Shan Yin, Quancong Zhang
Rock failure can cause serious geological disasters, and the non-extensive statistical features of electric potential (EP) are expected to provide valuable information for disaster prediction. In this paper, the uniaxial compression experiments with EP monitoring were carried out on fine sandstone, marble and granite samples under four displacement rates. The Tsallis entropy q value of EPs is used
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Assessment and control of the mine tremor disaster induced by the energy accumulation and dispersion of thick-hard roofs Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-08-23 Bin Yu, Mingxian Peng, Yang Tai, Shuai Guo
In order to solve the problem that current theory models cannot accurately describe thick-hard roof (THR) elastic energy and assess the mine tremor disasters, a theoretical method, a Timoshenko beam theory on Winkler foundation was adopted to establish the THR’s periodic breaking model. The superposition principle was used for this complex model to derive the calculation formulas of the elastic energy
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Electrochemistry and DFT study of galvanic interaction on the surface of monoclinic pyrrhotite (0 0 1) and galena (1 0 0) Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-08-22 Tingsheng Qiu, Kaiwei Ding, Huashan Yan, Liu Yang, Hao Wu, Guanfei Zhao, Xianhui Qiu
The electrochemical interaction between galena and monoclinic pyrrhotite was investigated to examine its impact on the physical and chemical properties of the mineral micro-surface. This investigation employed techniques such as electrochemistry, metal ion stripping, X-ray photoelectron spectroscopy, and quantum chemistry. The electrochemical test results demonstrate that the galena surface in the