高地应力软岩巷道锚网索拱协同耦合支护技术研究  

Study on bolt-mesh-cable-shed coupling support technology in soft rock roadway with high ground stress

作　　者：王博[1] 王晓燕[2] 党林航 WANG Bo;WANG Xiaoyan;DANG Linhang(Ningxia Construction Vocational and Technical College,Yinchuan 750021,China;Ningxia University,Yinchuan 750021,China;Zhongjiaotongli Construction Co.,Ltd.,Xi’an 710054,China)

机构地区：[1]宁夏建设职业技术学院,银川750021 [2]宁夏大学,银川750021 [3]中交通力建设股份有限公司,西安710054

出　　处：《有色金属（矿山部分）》2021年第1期5-10,共6页NONFERROUS METALS(Mining Section）

基　　金：宁夏自然科学基金项目(NZ17233);宁夏高等职业教育重点特色专业项目(NXGZJXGC20170312);宁夏高等学校创新创业教学改革项目(NXGXCXCY20170015)。

摘　　要：针对高地应力软岩巷道变形量大、持续时间长、难于支护的问题,以锚网索拱协同耦合支护思路为指导,通过现场钻孔观测、支护参数计算、数值模拟分析,对巷道关键部位锚索二次耦合支护技术进行了研究,提出了合理的支护体系方案。研究结果表明,锚网索拱耦合支护方式可以有效调整深部围岩强度,减小巷道变形量。在试验巷道顶板中线25°左右范围内实施锚索二次耦合,顶板下沉量最大值14.7 mm,两帮移近量最大值57.3 mm,显示了良好的支护效果。Aiming at the problems of large deformation,long duration and difficult support in soft rock roadway with high ground stress,this paper was guided by the idea of bolting with wire mesh and cable coupling support.The coupling support technology of the key part of the anchor cable was studied through field drilling observation,support parameter calculation and numerical simulation analysis,and the suitable support system scheme was proposed.The results showed that the bolt-mesh-cable-shed support system can effectively adjust the strength of the deep surrounding rock and reduce the deformation of the roadway.In the range of 25 roof middle line of test roadway,the second coupling of anchor cable was conducted with the maximum value of roof subsidence of 14.7 mm and the maximum value of two sides moving closer of 57.3 mm,showing good supporting effect.

关 键 词：软岩 锚杆 锚索 巷道支护 数值模拟 

分 类 号：TD353[矿业工程—矿井建设]