倾斜厚煤层沿空掘巷围岩稳定性控制技术研究  

Study on Surrounding Rock Stability Control Technology of Gob Driving Roadway in Inclined Thick Coal Seam

作　　者：张哲 张巨峰 李文忠 胡天辉 ZHANG Zhe;ZHANG Ju-feng;LI Wen-zhong;HU Tian-hui(Weijiadi Coal Mine of Gansu Jingyuan Coal Power Co.,Ltd.,Baiyin 730913,China;School of Energy Engineering,Longdong University,Qingyang 745000,China)

机构地区：[1]甘肃靖远煤电股份有限公司魏家地煤矿,甘肃白银730913 [2]陇东学院能源工程学院,甘肃庆阳745000

出　　处：《煤》2022年第7期5-9,33,共6页Coal

基　　金：甘肃省自然科学基金项目(21JR11RM049);甘肃省高等学校创新能力提升项目(2019B-154);甘肃省安全生产科技项目(GAJ00011);中国煤炭工业协会科学技术研究指导性计划项目(MTKJ2018-279)。

摘　　要：为了解决倾斜厚煤层沿空掘巷期间动压显现剧烈,巷道支护破坏严重,维修困难等问题,通过优化巷道支护参数,布置矿压监测站,对留设不同宽度煤柱的巷道围岩表面位移、深部多点位移、顶板离层、煤帮应力、锚杆和锚索受力进行了跟踪监测。得出:巷道达到稳定状态后,煤柱宽度为6.0 m时,顶板下沉量为162 mm,两帮移近量为254 mm;煤柱宽度为8.0 m时,顶板下沉量为92 mm,两帮移近量为360 mm;煤柱宽度为9.0 m时,顶板下沉量为114 mm,两帮移近量为595 mm。结果表明:煤柱宽度为6.0 m时,围岩控制效果好,倾斜厚煤层沿空巷道立体协控技术有效地控制了巷道围岩变形。In order to solve the problems of severe dynamic pressure,serious roadway support damage and difficult maintenance during roadway excavation along the goaf in inclined thick coal seam,by optimizing roadway support parameters,arranging ground pressure monitoring stations,tracking and monitoring the surface displacement of roadway surrounding rock,deep multi-point displacement,roof separation,coal wall stress and the stress of bolt and anchor cable with different width coal pillars,it is concluded that when the roadway reaches a stable state,when the width of coal pillar is 6.0 m,the subsidence of the roof is 162 mm and the approach of the two sides is 254 mm.When the width of coal pillar is 8.0 m,the subsidence of roof is 92 mm and the approach of two sides is 360 mm.When the width of coal pillar is 9.0 m,the subsidence of roof is 114 mm and the approach of two sides is 595 mm.The results show that when the width of coal pillar is 6.0 m,the surrounding rock control effect is good,and the three-dimensional cooperative control technology of goaf roadway in inclined thick coal seam effectively controls the deformation of surrounding rock.

关 键 词：倾斜厚煤层 沿空掘巷 围岩稳定性 稳定性控制 

分 类 号：TD353[矿业工程—矿井建设]