Abstract Obtaining the bursting liability is essential for rock burst mitigation. To reasonably evaluate the bursting liability of coal in deep coal mining, a new modified bursting energy index considering rebound and damage effects of rock is proposed. Then, uniaxial compressive tests of gypsum–rock combination specimens with different rock types are conducted for researching the energy evolution

Abstract China is a Pacific coastal country, adjacent to the Circum-Pacific seismic belt. The tsunami from the western North Pacific is very dangerous to China because of the short distance. This paper analyzes historical earthquakes and tsunamis in the western North Pacific, and gives the focal parameters characteristics of tsunamigenic earthquakes. Among the analysis results, the reverse fault is

Abstract The establishment of monitoring and warning systems for landslide with potential instability risk is an economical and effective way to ensure life safety and reduce property losses. However, as the number of landslides and sensors increases, the amount of monitoring data generated is close to massive, and the traditional monitoring systems are gradually unable to manage and analyze the acquired

Abstract Many dynamic disasters such as coal wall caving and roof falling have happened during longwall face crossing fault. Combined with the coal seam geological conditions in the 1302 longwall face AB coal mine, the paper comprehensively studies the overlying strata movement and the stress evolution laws of stope during superhigh-water material (SHWM) backfilling longwall face across fault by UDEC

Abstract Rainfall-induced shallow landslides are widely concerned for their sudden and group occurrences and serious threat to both lives and property. In this study, a hydraulic model coupling surface runoff and interstitial flow was established to study the failure characteristics of soil slopes under heavy rainfall. Based on the coupling of surface runoff and interstitial flow, we propose a modified

Abstract Accurate risk assessment is essential to help allocate the resource for disaster relief and make the evacuation decision when hit by a Tropical Cyclone (TC). The integrated analysis of the hazard-bearing body and the intrinsic characteristics of TCs are promising to provide a clear pattern of the caused risks. However, in the literature, the origin of a TC is not considered in risk assessment

Abstract Torrential rainfall can generate landslides, flash floods, and debris flows which might become disasters, causing loss of life and damage to property and infrastructure. To respond opportunely to hydrometeorological hazards, it is necessary to assess, rapidly and accurately, damage to the affected area. This is commonly done through time-consuming reconnaissance visits to obtain detailed field

Abstract The Bhagirathi Valley is investigated to understand the impact of various barrages and dams on natural river flow. The multiple barrages and dams in the valley (downstream of the Bhatwari Village) have obstructed/disrupted natural flow of the river which has adversely impacted geomorphological and ecological functions of the river. Besides, it is observed that during and after the implementation

Abstract In this article, the gully erosion susceptibility map (GESM) was developed for the Abdanan region, Ilam province, Iran using frequency ratio (FR), logistic regression (LR), an ensemble of radial basis function (RBF) and imperialist competitive algorithm (ICA) models. At first, 74 gully erosion locations have been recognized and then 52 (70%) cases had been regarded for training, while 22 (30%)

Abstract Risk of tea plant heat injury (RTHI) varies with geographical factors. To get a better understanding of the geographical factors determining RTHI variability, support vector machines were used to analyze relationships between RTHI and selected geographical factors. The results showed nonlinear relationships between RTHI and geographical factors. High values of RTHI were found in central Zhejiang

Abstract In many areas affected by climate change, agriculture is an industry sensitive to climate change. Many scholars have studied the relationship between climate factors and rice, but these studies did not quantitatively construct high temperature indicator and determine the threshold for high temperature hazard. In this paper, we constructed the index of high temperature intensity (HTI) based

Abstract Land Use Land Cover (LULC) mapping has been used in different environmental applications including disaster management, risk analysis, heat island mapping, and the effects of urbanization on environmental changes such as floods and droughts in the recent decade. The earth’s natural surface coverage including urban infrastructure, surface vegetation, bare soil can be identified with LULC maps

Abstract In face of the complicated and changing geological conditions, safety issue is always a primary concern during the construction phase of tunnel in the mountainous regions of China. This Express Letter reports data collection concerning the geo-hazardous events recorded in tunnel system in the period from 2002 to 2018. These accidents include collapse, water inrush, gas explosion, portal landslide

Abstract Water level and hydrochemical parameters from groundwater monitoring wells can be effectively used for interpreting changes in the groundwater system when aquifers are appropriately characterized. Groundwater levels in six paired monitoring wells of alluvial and sedimentary bedrock aquifers in the Gyeongju area, southeastern South Korea were analyzed to evaluate their abrupt changes due to

Abstract Slope failure is one of the failure modes of natural dams. Turbid seepage flow is often observed on the downstream slope of a natural dam in the field and indicates the migration of fine particles in the dam. However, the coupling of internal erosion and seepage in natural dams during the impounding process is still unclear. This paper studies fine particles migration in a dam and the slope

Abstract Based on the Coulomb stress changes due to the 2013 Nantou, Taiwan, earthquake sequences, the locations of successive earthquake events could be estimated. Based on those results, we further investigated the potential earthquake hazards by simulating the strong motions around central Taiwan. The simulating process included three steps. To start, 30 source models on the fault generated by the

Abstract In this study, multitemporal satellite images, unmanned aerial vehicle (UAV) photogrammetry and ground-based radar were utilized to investigate the formation mechanism and disaster features of different phases of the Xuyong landslide disaster that occurred in Sichuan Province on December 9, 2018. Field survey indicates that the estimated landslide volume is approximately 35000 m3. The landslide

Abstract In order to solve the related problems of roof collapse in deep thick loose seam, taking the actual geological conditions of 1302 working face of Zhaolou Coal Mine as the geological background. A mechanical calculation and analysis model for a deep thick loose seam is established. A mining dynamic simulation was carried out using the numerical simulation software FLAC3D. Fracture development

Abstract Rock-fall incidents have the characteristics of multiple, sudden and random, which threaten the surrounding buildings and traffic lines. This paper studied the monitoring and prediction of rock falls with a new synthetic aperture radar (SAR) technology. One of the most important factors in rock-fall target detection is the signal-to-clutter-plus noise ratio (SCNR) after clutter suppression

Abstract Accurate estimation of extreme precipitation is important for hydrological prediction and flood risk management. Recent research suggests that satellite-derived precipitation products can provide an alternative to gauged data, making it essential to evaluate the accuracy of these products. This study aimed to quantitatively evaluate the application of the Global Precipitation Measurement (GPM)

Abstract Remote sensing and geographic information systems (GIS) are widely used for landslide susceptibility mapping (LSM) to support planning authorities to plan, prepare and mitigate the consequences of future hazards. In this study, we compared the traditional per-pixel models of data-driven frequency ratio (FR) and expert-based multi-criteria assessment, i.e. analytical hierarchical process (AHP)

Abstract On May 18, 2006, a disastrous groundwater inrush occurred at the Xinjing coal mine in Datong, Shanxi province, China. Great effort was taken during the post-accident rescue. However, triggered by the accumulated water rushed from the nearby abandoned tunnels and goafs of the Yanzishan coal mine, which had been closed for tens of years, it caused great damage, including 56 deaths and direct

Abstract The current desertification feature space models are almost linear and ignore the complicated and nonlinear relations that exist among variables when monitoring desertification. Herein, point-to-point and point-to-line models have been proposed by completely considering the nonlinear relations between the Albedo-Modified Soil Adjusted Vegetation Index (MSAVI) and the effects of soil background

Abstract Rockfalls influence the safety of the surrounding infrastructure and the normal operation of transportation lines. The application of synthetic aperture radar (SAR) technology is a new method of rock-fall monitoring and disaster prediction. This paper introduces a novel method to velocity estimation of rock-fall target utilizing SAR with low pulse repetition frequency (PRF) sampling. As is

Abstract Machine learning models are regarded as efficient and popular models for natural disaster susceptibility prediction. However, few studies have focussed on the applications of the latest popular machine learning models in collapse susceptibility assessment (CSA). This paper proposes a 3S (RS, GPS and GIS) technology-based support vector machine (SVM) to map collapse susceptibility in the Nantian

Abstract Underground mining is known to cause the deformation and failure of the surrounding rocks and frequently associated with water-inrush through the mine floor. In this study, in-situ strain tests along with borehole imaging measurements were utilized to investigate the deformation and failure characteristics of the rock mass of the mine floor caused by mining. We directly measured the strain

Abstract Following the 2014 report of the International Panel on Climate Change (IPCC), Earth surface has been warming up since the mid-18th century. From the late 1970s, Earth warmed up intensively, leading to unusual environmental, economic and social events. An intensive 19th century’s, Earth warming has speeded up ice melting and sea level rise, increased water shortage and drought intensity. Expected

Abstract Since August 2017, more than 744,400 stateless Rohingya refugees – an ethnic Muslim minority group from the Rakhine State – have entered Bangladesh to escape serious crimes against humanity conducted by the Myanmar Army. Extensive level of deforestation and hill cutting activities took place in Cox’s Bazar District (CBD) in Bangladesh to accommodate them. The refugee camps are sitting on hills

Abstract In order to provide guidance for Muzhailin tunnel design and construction, in this study, five groups of slate specimens with different bedding angles (β, angle between bedding plane and vertical axis) were taken from site to conduct Brazilian splitting tests. The tensile strength, applied energy, failure behaviour, and acoustic emission (AE) characteristics were analyzed, and the failure

Abstract Deformation of surrounding rock is widely monitored to discover surrounding rock behaviors for purpose of event forecasting. This article aims to present a comparative study on surrounding rock nonlinear deformation prediction using computational intelligence techniques. The Gaussian process (GP), the support vector machine (SVM), and the wavelet neural network (WNN), are analyzed comparatively

Abstract In safety-critical applications, deformation monitoring systems are required to issue timely alerts when a deformation beyond a critical threshold occurs. Only a very small probability of failing to issue an alert when in fact one should have been given, is acceptable. This probability is referred to as integrity risk. In this contribution, we show how to evaluate this risk, thereby taking

Abstract This article focuses on the rapid assessment of possible numbers of casualties after an earthquake. We use data on earthquake casualties to study and verify the relationship between casualties and building types, building anti-lethal levels, seismic intensity and other influencing factors. A rapid assessment method for casualties based on buildings’ anti-lethal level is proposed. The method

Abstract Reducing the impacts and risk of weather hazards requires better knowledge of the regions that are most affected in terms of economic damage, fatality and injury. While understanding of weather hazards has greatly improved, regional vulnerability to weather hazards of various types has not been well assessed in the United States. Through a compilation of event-based records of eight types

Abstract After earthquake, the correct and efficient earthquake emergency evacuation of pedestrian is crucial for reducing casualties. Based on the research on the quantitative of panic coefficient and the calibration of initial desired speed, this research has constructed the revised social force model which could accurately simulate the post-earthquake evacuation process of the crowed. Using the

Abstract Lands reserved for indigenous people in Taiwan are mostly located at junctions between forestry compartments and hillside lands. After heavy rains, sediment disasters can easily occur in such locations. Therefore, identifying primary and derived disaster landslide areas of watersheds in lands reserved for indigenous people is imperative. This study used landslide-prone slopes to correct the

Abstract Water inrush is a serious geological disaster in tunnel. Due to the complexity of geological conditions, large-scale water inrush is prone to occur in tunnel through water-rich fault during construction. Based on the comprehensive analysis of influencing factors, 8 evaluation indexes and the corresponding grading criteria are put forward to assess the risk of water inrush, and the risk of

Abstract The Yellow River Delta, with the most typical new wetland system in warm temperate zone of China, is suffering from increasingly serious salinization. The purpose of this study is to utilize five typical surface parameters, including Albedo (the surface Albedo), NDVI (vegetation index), SI (salinity index),WI (humidity index), and IFe2O3 (Iron oxide index), to construct 10 different feature

Abstract Railway structures are endangered by natural hazards. A better understanding of historical railway disaster events and the exposure of railway infrastructures to natural hazards will facilitate railway planning and disaster risk management. This article compiles internet news to build the first database of Chinese railway disasters from 2000 to 2016. Based on the database, the temporal and

Abstract Earthquakes are frequent in the Himalayas and almost all moderate to strong earthquakes have caused enormous losses of lives and property in Kathmandu Valley, Nepal. Several historical earthquakes depicted that considerable loss was attributed to liquefaction induced failure in structures and infrastructures. Existing liquefaction studies have mostly used deterministic approach to obtain the

Abstract This article addresses the spatial analysis of landslide susceptibility in the Ardabil province of Iran. To this end, two well-known optimization algorithms, namely genetic algorithm (GA) and particle swarm optimization (PSO) are synthesized with an adaptive neuro-fuzzy inference system (ANFIS) to create the ensembles of GA-ANFIS and PSO-ANFIS. Besides, the statistical index (SI) model is

Abstract Urban land subsidence is a slow-density geology disaster caused by the withdrawal of groundwater or the application of water at the land surface. Developing a method of effectively monitoring, predicting and preventing land subsidence has become an urgent urban disaster issue and a great challenge. Traditional mathematical statistics prediction models lack physical meaning. Thus, in this paper

Abstract Gobs and coal pillars left in the upper coal seam exploitation bring a series of changes to the surrounding rock structures and stress environment of the roadway in the lower coal seams, which leads to difficulties in roadway maintenance. Firstly, the deformation and failure laws of roadway surrounding rock during shallow-buried multi-seam mining are studied using UDEC simulation. The results

Abstract The main motivation of this study is to assess the accuracy performance of the real-time global GNSS PPP positioning service, i.e. Trimble CenterPoint RTX, and online PPP post-processing service, i.e. CSRS-PPP, in Çorum Province of Turkey. Within this scope, a geodetic point was established and GNSS data were logged in static mode at a measurement interval of 1 Hz. At the same time, the real-time

Abstract This paper investigates the behaviour of the double-curvature Deriner dam, which is in the operation phase and also one of the highest dams in the world. In order to determine the displacements, a geodetic network consisting of twelve reference and seven object points was measured in four periods by means of the Global Navigation Satellite Systems (GNSS) data. The θ2-Criteria method was used

Abstract Because of the close relationship between rock burst and structural characteristics of coal and rock mass, it is important to study failure and bursting liability of different coal-rock combinations to predict rock burst. Hence, based on the structure and interaction of roof-coal-floor system, and the inhomogeneous characteristics of different media, the progressive failure process and acoustic

Abstract Landslide susceptibility is an important topic mainly because its geo-spatial analysis provides a useful tool for planning, disaster management and hazard mitigation. In this study, the aim is to identify and analyze landslide susceptibility at a local spatial scale, which is represented by the town of Handlová, using the multi-criteria evaluation (i.e., the analytical hierarchy process technique

Abstract This study was conducted to investigate the spatiotemporal changes of land use/land cover (LULC) along the eastern coast of the United Arab Emirates (UAE) over a 20-year period using an integration of remote sensing and Geographic Information Systems techniques. The impact of land use change on flooding potential was also investigated through hydrologic model simulations. Landsat images of

Abstract Natural hazard risk assessment generally focuses on a single hazard type, such as earthquakes, landslides, or floods. This emphasis tends to consider physical processes in isolation. However, most locations are simultaneously at risk to multiple, interacting hazards that generate cascading effects or synergies. Although scholars have proposed a multi-hazard risk framework based on probabilities

Abstract This study presents a water accumulation diffusion algorithm to spatially simulate rainstorm-induced waterlogging for people’s lives and property safety. Taking part of Jinfeng District in Yinchuan City, China, as a study area, a storm water management model (SWMM) model is constructed with the aid of geographic information system (GIS) and remote sensing (RS) technologies. GIS is used to

Abstract The urban geological environment risk assessment is based on the research and analysis of the main geological environmental problems of the city, comprehensively assessing the risk of urban geological environment problems and the possible losses, and studying the degree of matching between the natural and social attributes of the geological environment. According to the urban planning of Zhengzhou

Abstract Water mists are an effective means of suppressing coal fires in enclosed spaces. In the present work, A new type of nitrogen-water mist atomizer was developed. This atomizing device does not need additional power facilities. Only relying on the interaction between nitrogen generated by nitrogen injection equipment in coal mine and water in underground pipelines, it can produce nitrogen with

Abstract The Sichuan-Tibet Railway (STR) in China is of profound significance for Tibet's long-term development. Construction of railway reshapes the landscape it passes through and consequently influences the geological hazard risk. Despite the importance of railway construction, there remains a paucity of previous studies involving this factor. In this paper, we make a straightforward development