高应力软岩巷道全断面松动卸压技术研究  

Stress-Relief Technique of Full-Face Gangue Dropping in Soft Rock Roadway Under High Stress

作　　者：王襄禹[1] 柏建彪[1] 李伟[2] 

机构地区：[1]中国矿业大学煤炭资源与安全开采国家重点实验室,江苏徐州221008 [2]北京科技大学土木与环境工程学院,北京100083

出　　处：《采矿与安全工程学报》2008年第1期37-40,45,共5页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(50774077,50574089);教育部新世纪优秀人才支持计划资助项目(NCET-06-0475);全国博士学位论文作者资金项目(200706)

摘　　要：本文以某矿西大巷(高应力软岩巷道)为研究对象,从控制围岩应力的角度出发,提出了全断面松动放矸卸压技术,即通过人为方法主动在支架后方进行放矸,释放围岩的变形能,可将巷道开挖形成的集中应力向围岩深部转移,使巷道处于应力较低的区域中.通过数值计算研究分析了放矸卸压范围对应力转移效果和控制围岩变形的作用,确定了合理的放矸卸压参数.工程应用结果表明,应用该技术可使高应力软岩巷道附近的高应力显著地向深部转移,有效地控制了巷道剧烈变形,保持了巷道稳定.In this paper, a stress-relief technique of gangue dropping in full-face that excavate the gangue through contrived method in order to release the distortion energy is put forward. The concentrated stress can be transferred to the deeper of the surrounding rock so that the roadway can be located in a low stress area. According to the numerical calculation, we discussed and analyzed the effect of the range of gangue dropping on stress transfer and on the deformation of surrounding rock, and determined reasonable parameters of gangue dropping stress-relief. The application result shows that the high stress in the surrounding rock of soft rock roadway under high stress can be transferred to the deep part evidently, and the deformation of roadway can be well controlled so that the roadway can keep stable.

关 键 词：放矸卸压 软岩巷道 高应力 应力转移 数值计算 

分 类 号：TD322.5[矿业工程—矿井建设]