煤层群下煤层开采工作面矿压显现规律研究  

Research on the Manifestation Law of Mining Pressure in Coal Seam Mining Face Under Coal Seam Group

作　　者：魏启明 胡亚军 张海龙 杨宗泉 王虎 刘玉德[2] Wei Qiming;Hu Yajun;Zhang Hailong;Yang Zongquan;Wang Hu;Liu Yude(Shicao Village Coal Mine of Ningxia Coal Industry Company,CHN Energy Group,Ningxia,750000;Mining Safety College of North China University of Science and Technology,Hebei,065201)

机构地区：[1]国家能源集团宁夏煤业公司石槽村煤矿,宁夏750000 [2]华北科技学院矿山安全学院,河北065201

出　　处：《当代化工研究》2025年第1期43-45,共3页Modern Chemical Research

摘　　要：为研究煤层群下煤层工作面开采矿压规律,以石槽村煤矿221001工作面为研究对象,采用模拟与现场监测的方法,分析下煤层工作面来压特征。研究表明:1.工作面初次来压步距约为45.4 m,应力峰值为31.4 MPa,周期来压步距为25.1 m,来压应力峰值为30.5 MPa,工作面顶板下沉量为4.1 m。2.当工作面位置距离测点处超过80 m时,巷道表面位移量几乎为0;当工作面距测点50 m范围内,巷道表面位移量陡增,直至测站15 m范围内,超前支承应力达到峰值状态。To study the mining pressure law of coal seam working face under coal seam group,the 221001 working face of Shicao village coal mine was taken as the research object,and simulation and on-site monitoring methods were used to analyze the pressure characteristics of the coal seam working face.Research has shown that:1.The initial pressure step distance of the working face is about 45.4 m,the peak stress is 31.4 MPa,the cyclic pressure step distance is 25.1 m,the peak pressure stress is 30.5 MPa,and the subsidence of the working face roof is 4.1 m.2.The distance be-tween the working face and measuring point exceeds 80 m,the displacement of the roadway surface is almost 0;When the deformation and failure rate of the surrounding rock of the roadway gradually increases sharply within a range of 50 m from the measuring point,the surface displacement of the roadway increases sharply until the peak state of the advanced support stress is reached within a range of 15 m from the measuring station.

关 键 词：煤层群 下煤层 矿压显现 超前支承压力 

分 类 号：TD323[矿业工程—矿井建设]