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Application of fuzzy comprehensive assessment and rock engineering system to assess cavability in block caving mining and establishment of its regionalized model
Environmental Earth Sciences ( IF 2.8 ) Pub Date : 2021-01-05 , DOI: 10.1007/s12665-020-09296-6
Huan Liu , Fengyu Ren , Rongxing He , Guanghui Li , Jing Zhang

The assessment of rock mass cavability is a key research topic when mines intend to adopt block caving mining during the feasibility stages. However, cavability assessment is a multi-index and non-linear complex process in system engineering, and uncertainty exists in the assessment process. In this situation, it is important for cavability assessments to minimize the subjectivity of human judgements and consider the factors that influence cavability and their interrelationships. In this study, we introduce a new approach that combines fuzzy comprehensive assessment (FCA) with rock engineering system (RES). First, the FCA was applied to establish an assessment model based on a conversion function, membership function, and fuzzy assessment matrix. Second, the RES was used to determine the weights of influential factors by applying an interaction matrix. Third, rock mass cavability was analysed based on the assessment model and the factor weights. The results of the cavability assessment were for a partial rock mass due to the discontinuity of the cavability assessment index value in space. Therefore, geostatistics and block models were adopted to establish a regionalized model of rock mass cavability, and the spatial distribution of cavability was obtained. Based on the Luoboling copper-molybdenum mine as a case study, FCA and the RES were applied, and a regionalized model of cavability was established. The results can provide a basis for studies of block caving mining and mine design.



中文翻译:

模糊综合评判与岩石工程系统在崩落开采可空性评价中的应用及区域化模型的建立

当矿山打算在可行性研究阶段采用分段崩落采矿法时,对岩体可溶性的评估是一个关键的研究主题。然而,空洞性评估是系统工程中的一个多指标,非线性的复杂过程,评估过程中存在不确定性。在这种情况下,重要的是,对于可腔性评估,应尽量减少人类判断的主观性,并考虑影响可腔性及其相互关系的因素。在这项研究中,我们介绍了一种将模糊综合评估(FCA)与岩石工程系统(RES)相结合的新方法。首先,应用FCA建立基于转换函数,隶属函数和模糊评估矩阵的评估模型。第二,RES通过应用相互作用矩阵来确定影响因素的权重。第三,基于评估模型和因子权重,对岩体的可穴性进行了分析。由于空间中可塑性评估指标值的不连续性,可塑性评估的结果是针对部分岩体的。因此,采用地统计学和块体模型建立了岩体空化的区域化模型,并获得了空化的空间分布。以罗泊坪铜钼矿为例,应用FCA和RES,建立了可生化区域化模型。研究结果可为研究崩落开采和矿山设计提供依据。由于空间中可塑性评估指标值的不连续性,可塑性评估的结果是针对部分岩体的。因此,采用地统计学和块体模型建立了岩体空化的区域化模型,并获得了空化的空间分布。以罗泊坪铜钼矿为例,应用FCA和RES,建立了可生化区域化模型。研究结果可为研究崩落开采和矿山设计提供依据。由于空间中可塑性评估指标值的不连续性,可塑性评估的结果是针对部分岩体的。因此,采用地统计学和块体模型建立了岩体空化的区域化模型,并获得了空化的空间分布。以罗泊坪铜钼矿为例,应用FCA和RES,建立了可生化区域化模型。研究结果可为研究崩落开采和矿山设计提供依据。以罗泊坪铜钼矿为例,应用FCA和RES,建立了可生化区域化模型。研究结果可为研究崩落开采和矿山设计提供依据。以罗泊坪铜钼矿为例,应用FCA和RES,建立了可生化区域化模型。研究结果可为研究崩落开采和矿山设计提供依据。

更新日期:2021-01-05
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