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.
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)
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)。
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
deep seam roadway
weak coal rock in sidewall
displacement gradient
bolt and cable support parameters
