大采深厚煤层巷道掘进防冲治理技术研究与应用

Research and application of anti scour treatment technology in roadway excavation of large mining deep coal seam

张双楼煤矿74102工作面位于-1000 m水平延伸采区,除受采深影响外,在巷道掘进留底煤且较厚,导致大量弹性能经应力二次分布积聚在无支护的底煤中,形成高应力集中区,诱发底煤冲击。提出对顶板、煤层、底煤进行全方位综合治理技术,有效防止了冲击地压的发生,保证了巷道的安全掘进,可为类似条件下冲击地压防治提供指导。

The 74102 working face of Zhangshuanglou Coal Mine is located in the-1000 m horizontal extension mining area.In addition to being affected by the mining depth,the bottom coal is reserved and thick in the roadway excavation,resulting in a large amount of elastic energy accumulated in the unsupported bottom coal through the secondary distribution of stress,forming a high stress concentration area and inducing the bottom coal impact.The comprehensive treatment technology for roof,coal seam and bottom coal is put forward,which can effectively prevent the occurrence of rockburst and ensure the safe excavation of roadway,which can provide guidance for the prevention and control of rockburst under similar conditions.