基于Dematel-Entropy耦合赋权的煤层顶板富水性评价  

Evaluation of Coal Seam Roof Water Richness Based on Dematel-Entropy Coupling Empowerment

作　　者：杜明启 徐杰 吴慧杰 王启庆[2] 李文平[2] DU Mingqi;XU Jie;WU Huijie;WANG Qiqing;LI Wenping(SDIC Hami Energy Development Limited Liability Company,Hami 839000,China;School of Resources and Earth Sciences,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]国投哈密能源开发有限责任公司,新疆哈密839000 [2]中国矿业大学资源与地球科学学院,江苏徐州221116

出　　处：《煤炭技术》2024年第8期154-159,共6页Coal Technology

基　　金：国家自然科学基金资助项目(42372316);中煤揭榜挂帅项目(2022JB01)。

摘　　要：矿井的安全问题一直是矿业领域关注的重点,而准确评估含水层的富水性是进行涌水或突水灾害风险分析的首要前提。以大南湖七号煤矿一、二分区3煤顶板为研究对象,首先,在分析采区的地质及水文地质条件的基础上,选取了含水层厚度、隔水指数、煤层倾角、岩心采取率、砂泥互层指数、岩性结构指数6个因素作为评价富水性的主要指标;然后,采用Dematel(决策实验室法)-Entropy(熵值法)确定主客观权重,利用信息熵原理协调2种评价方法之间既竞争又一致的关系,得到各影响因素组合权重;最后,结合GIS分析功能对含水层富水性进行评价分区。研究结果表明:一分区整体为弱富水性,二分区以中等-强富水性为主,评价结果准确率达80%以上,可为煤层顶板含水层的疏水方案提供参考。The safety of mines has always been the focus of attention in the field of mining,and the accurate assessment of the water richness of aquifers is the first prerequisite for the risk analysis of water surge or sudden water disaster.Taking the No.3 coal roof inⅠandⅡdivisionsof Dananhu No.7 coal mine as the research object,firstly,on the basis of analyzing the geological and hydrogeological conditions of the mining area,six factors,namely,aquifer thickness,water isolation index,dip angle of the coal seam,core take rate,sand-mud interlayer index,and lithological structure index,are selected as the main indexes for evaluating the water-richness;and then,Dematel-Entropy is used to determine the subjective and objective weights,the principle of information entropy is utilized to coordinate the relationship between the two evaluation methods,which is both competitive and consistent,so as to obtain the combined weights of the influencing factors.Finally,the aquifer water richness is evaluated and zoned by combining the GIS analysis function.The research results show that theⅠdivision is weakly water-rich as a whole,and theⅡis dominated by medium-strong water-richness,and the accuracy of the evaluation results reaches more than 80%,which can provide reference for the hydrophobic program of other coal seam roofs.

关 键 词：富水性 Dematel-Entropy GIS 耦合赋权 

分 类 号：TD745[矿业工程—矿井通风与安全]