高应力软岩巷道差异化协同支护技术研究  

Research on differentiated collaborative support technology of high stress soft rock roadway

作　　者：李勇 Li Yong(Zhengzhou Coal Industry(Group)Co.,Ltd.,Zhengzhou 450000,China)

机构地区：[1]郑州煤炭工业(集团)有限公司,河南郑州450000

出　　处：《煤炭与化工》2024年第7期18-22,共5页Coal and Chemical Industry

摘　　要：为解决高应力软岩巷道的支护与底鼓治理技术难题,保证巷道安全使用,对杨河煤业31151回风巷底抽巷复杂采动影响下巷道支护失稳及破坏机理进行分析,采用数值模拟技术进行围岩稳定性分析,研究高应力软岩巷道底鼓机理围岩控制技术,并提出针对性的锚网索强化支护方案及底板锚网索+注浆支护技术方案。经现场实践,两段巷道受采动影响后,巷道最大离层深度1.8 m,最大位移量为210 mm,最大底鼓量为230 mm,所有最大变形量均在设计允许变形范围内,支护强度满足巷道支护要求。In order to solve the technical problems of support and floor heave treatment of high stress soft rock roadway and ensure the safe use of roadway,the instability and failure mechanism of roadway support under the influence of complex mining in No.31151 return air roadway of Yanghe Coal Industry were analyzed.Numerical simulation technology was used to analyze the stability of surrounding rock and study the floor heave mechanism and surrounding rock control technology of high stress soft rock roadway.The targeted bolting scheme of bolt-mesh-cable and the technical scheme of bolting net cable of bottom plate plus grouting support were proposed.The field practice showed that after the two sections of roadway were affected by mining,the maximum separation depth of roadway was 1.8 m,the maximum displacement was 210 mm,and the maximum floor heave was 230 mm.All the maximum deformation was within the allowable deformation range of design,and the support strength met the requirements of roadway support.

关 键 词：高应力软岩巷道 底鼓 差异化支护 锚网索 矿压观测 

分 类 号：TD353[矿业工程—矿井建设]