摘要
侏罗系中统基岩裂隙含水层是神南矿区煤矿生产面临的主要充水含水层,以张家峁井田为例,选取了影响含水层富水性的砂岩等效厚度、砂泥岩厚度比、岩芯采取率和砂泥岩互层层数等4个指标,采用层次分析法和变异系数法求取各指标组合权重,改进了传统的富水性结构指数的数学模型,对张家峁井田煤层顶板侏罗系中统基岩裂隙含水层的富水性进行评价。研究表明:组合赋权法既可以避免主观赋权过程中人为因素干扰过重的缺点,又可以避免客观赋权过程中权重与实际不符的缺点;以富水性结构指数G′=0.06、0.13作为侏罗系中统基岩裂隙含水层富水性强弱的分区阈值,所取得的评价结果可以更客观、准确地评价煤层顶板富水性,为矿井防治水工作提供参考依据。
The middle Jurassic bedrock fissure aquifer is the main water-filled aquifer facing coal production in the Shennan mining area. The Zhangjiamao minefield is taken as an example, and the sandstone equivalent thickness, sand-mudstone thickness ratio, the core selection rate and the number of sand-shale interaction layers are four indicators. The analytic hierarchy process and the variation coefficient method are used to obtain the combined weight of each indicator. The traditional mathematical model of the water-rich structure index is improved. The water richness of the fractured aquifer of the Luo system bedrock was evaluated. Research shows that: the combined weighting method can avoid the shortcomings of excessive interference by human factors in the subjective weighting process and the shortcomings that the weights in the objective weighting process are not consistent with the reality;the water-rich structure index value is 0.06 and 0.13 as the middle Jurassic based on the partition threshold of the water richness of the bedrock fissure aquifer, the obtained evaluation results can more objectively and accurately evaluate the water richness of the coal roof and provide a reference for mine water control work.
作者
代革联
高幸
姬中奎
常宝天
乔倩
DAI Gelian;GAO Xing;JI Zhongkui;CHANG Baotian;QIAO qian(School of Geology and Environment,Xi'an University of Science and Technology,Xi'an 710054,China;China Coal Technology and Engineering Group Xi'an Research Institute,Xi'an 710054,China)
出处
《煤炭技术》
CAS
北大核心
2022年第11期82-86,共5页
Coal Technology
基金
国家重点研发计划资助项目(2017YFC0804100)。
关键词
层次分析法
变异系数法
富水性结构指数
顶板含水层
矿井防治水
analytic hierarchy process
variation coefficient
water-rich structure index
roof aquifer
mine water control
