冲击倾向性煤层沿空掘巷围岩控制机理研究  

On control mechanism of surrounding rock of roadway driving along goaf in coal seam with outburst-proneness

作　　者：郭念波[1] 陈本华[1] 桂兵[1] 张洋[1] 

机构地区：[1]兖州煤业股份有限公司济宁三号煤矿,山东省济宁市272169

出　　处：《中国煤炭》2012年第9期32-35,共4页China Coal

摘　　要：针对冲击倾向性煤岩层条件下沿空掘巷的围岩控制问题,从应力控制和支护系统设计方面入手,提出了沿空掘巷围岩减冲控制原理。分析了冲击倾向条件下沿空掘巷的破坏特征和影响因素,通过合理选取煤柱宽度降低围岩应力、人为制造软弱夹层释放围岩应力吸收冲击能、采用高性能锚杆支护技术体系强化围岩支护小结构强度等综合措施,可实现对冲击煤层沿空巷道的有效控制。Aiming at the surrounding rock control problem of roadway driving along goaf in coal seam with outburst-proneness, based on the stress controlling and support system designing, the rockburst weakening mechanism is proposed. According to the analysis of the failure characteristics and influencing factors of the roadway driving along goal in the seam with out- burst-proneness, the comprehensive measures are adopted including designing reasonably pillar＇s width to reduce surrounding rock stress, creating soft interlayer to release wall rock stress and absorb impact energy, and using high-performance bolting support technology system to enhance the strength of surrounding rock support structure, which can realize the effective control on the roadway driving along goaf in coal seam with outburst-proneness.

关 键 词：冲击矿压 沿空掘巷 围岩强度弱化 围岩控制 

分 类 号：TD353[矿业工程—矿井建设]