阶梯状断层条件下防水煤岩柱留设宽度研究  

Study on Width of Waterproof Coal Pillar Under Condition of Step Fault

作　　者：黄丹 张文忠 陈宝辉 HUANG Dan;ZHANG Wenzhong;CHEN Baohui(School of Hydraulic Engineering,Yellow River Conservancy Technical Institute;CCTEG Xi'an Research Institute(Group)Co.,Ltd.)

机构地区：[1]黄河水利职业技术学院水利工程学院,475000河南省开封市 [2]中煤科工西安研究院(集团)有限公司,陕西省西安市710054

出　　处：《现代矿业》2022年第12期222-225,235,共5页Modern Mining

基　　金：中煤科工集团西安研究院有限公司科技创新基金面上项目(编号:2015XAYMS17)。

摘　　要：为研究阶梯状断层组防水煤岩柱宽度,以邯邢矿区邢东矿内F23断层与SF27断层组成的阶梯状断层组为研究对象,根据煤层开采引起的底板岩层变形和破坏深度,利用断层四边形防水煤岩柱体稳定性结构力学模型,按照四边形煤岩柱体内局部岩体受力情况及其几何特征,推导梯状断层防水煤岩柱塑性区破坏宽度计算公式,且计算结果与相似模拟实验结果一致。结合以往地堑状断层煤柱留设成果,说明该模型对于断层组防水煤岩柱留设研究具有很好的适用性。In order to study the width of waterproof coal and rock pillar of stepped fault group,the stepped fault group composed of F23 fault and SF27 fault in Xingdong Mine of Hanxing Mining Area was taken as the research object.According to the deformation and failure depth of floor rock layer caused by coal seam mining,the calculation formula of plastic zone failure width of waterproof coal and rock pillar of stepped fault was deduced by using the stability structural mechanics model of fault quadrilateral waterproof coal and rock pillar,according to the stress and geometric characteristics of local rock mass in quadrilateral coal and rock pillar.The calculation results are consistent with the results of similar simulation experiments.Combined with the results of previous graben fault coal pillar retention,it shows that the model has good applicability for the study of fault group waterproof coal pillar retention.

关 键 词：阶梯状断层 防水煤岩柱 塑性区 底板破坏深度 

分 类 号：TD822.3[矿业工程—煤矿开采]