深部煤层巷道帮部软弱煤岩合理支护选择  

Reasonable support selection of weak coal rock in sidewall of roadway in deep coal seam

作　　者：查亦林 吴德义 ZHA Yilin;WU Deiyi(Guangzhou City Construction and Development Holdings Company Limited,Guangzhou 510623,China;Crvil Engineering School,Anhui Jianzhu University,Hefei 230022,China;National local Joint Engineering Laboratory of Building Health Monitoring and Disaster Prevention Technology,Hefei 230022,China)

机构地区：[1]广州市城市建设开发有限公司,广东广州510623 [2]安徽建筑大学土木工程学院,安徽合肥230022 [3]建筑健康监测与灾害预防技术国家地方联合工程实验室,安徽合肥230022

出　　处：《建井技术》2023年第5期43-47,共5页Mine Construction Technology

基　　金：国家自然科学基金资助项目(51374009,51674005)。

摘　　要：选择合理支护形式及参数,对保持深部煤层巷道帮部软弱煤岩变形稳定具有重要工程应用意义。针对埋深为700.0~1100.0m、黏结力为0.6~1.2MPa、内摩擦角为18°~28°的深部煤层矩形或梯形巷道,采用多点位移计实测深部煤层巷道两帮煤岩位移梯度分布,依此量化选择巷道帮部软弱煤岩合理的锚杆(索)支护参数,并为工程应用提供了依据。The selection of reasonable support forms and parameters is of great significance in engineering application to keep the deformation stability of weak coal rock in sidewall of roadway in deep coal seam.For rectangular or trapezoidal roadway of deep coal seam with buried depth of 700.0~1100.0m,cohesion of 0.6~1.2 MPa,and internal friction angle of 18°~28°,the gradient distribution of coal rock displacement on two sidewalls of deep coal seam roadway was measured by multi-point displacement meter.Based on this,reasonable bolt and cable support parameters of weak coal rock in sidewall of roadway were quantitatively selected,and the basis for engineering application was provided.

关 键 词：深部煤层巷道 帮部软弱煤岩 位移梯度 锚杆(索)支护参数 

分 类 号：TD353[矿业工程—矿井建设]