阶梯状断层防水煤岩柱体塑性区宽度  

Study on the Width of Plastic Zone of Waterproof Coal-Rock Pillar of Stepped Faults

作　　者：张文忠 ZHANG Wenzhong(Xi'an Research Institute of China Coal Technology&Engineering Group Corp,Hydrogeology Research Institute,Xi’an 710054,China;Xi'an University of Science and Technology,Xi'an 710054,China)

机构地区：[1]中煤科工集团西安研究院有限公司水文地质研究所,陕西西安710054 [2]西安科技大学,陕西西安710054

出　　处：《湖南科技大学学报（自然科学版）》2021年第3期28-33,共6页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金：国家重点研发计划项目资助(2017YFC0804106)。

摘　　要：煤系地层中断层带常以阶梯、地堑状等形式出现,为研究阶梯状断层组防水煤岩柱体塑性区宽度,以邯邢矿区邢东煤矿阶梯状断层组为研究对象,基于工作面导水裂隙带发育规律,创新性地提出阶梯状断层梯形防水煤岩柱体稳定性结构力学模型,根据梯形煤岩柱体内局部岩体受力情况及其几何特征,推导出阶梯状断层防水煤岩柱塑性区破坏宽度计算公式,并针对邢东煤矿内F23断层与SF27断层组成的阶梯状断层组,通过理论分析和数值模拟,计算了阶梯状断层防水煤岩柱塑性区宽度,进一步验证了理论分析的正确性.In coal stratum faults often appear in the form of mantle, stepped, etc. In order to study the width of plastic zone of water proof coal-rock pillar of stepped faults, taking the stepped faults in Xingdong coal mine in Hanxing mining area as the research object, based on the development regularity of the height of fractured water-conducting zone, innovatively proposed mechanical model of stability of trapezoidal waterproof coal-rock pillar of stepped faults. According to the stress and its geometric characteristics of local rock mass in trapezoidal coal-rock column, deduced the formula for calculating the failure width of plastic zone of waterproof coal-rock pillar of stepped faults. The F23 and SF27 stepped faults were studied which in Xingdong coal mine in Hanxing mining area, through theoretical analysis and numerical simulation, the width of the plastic zone of waterproof coal-rock pillar of stepped faults was calculated, further the correctness of the theoretical analysis was verified.

关 键 词：断层 防水煤岩柱 塑性区 阶梯状断层组 导水裂隙带 

分 类 号：TU745[建筑科学—建筑技术科学]