摘要
针对华亭煤矿工作面回采期间,由于采深加大、邻空侧顶板垮断不充分致使工作面矿压危险性急剧上升的状况,分析确定影响工作面矿压危险性的主要因素为覆岩关键层的运动及周期性破断,据此判定工作面覆岩关键层为上覆基本顶并分析其破断力源,制定相应的解危卸压措施,并在管理制度上进一步优化完善,与邻近工作面相同区段相比,矿压显现破坏程度显著下降,为工作面安全回采提供了保障。
In view of sharply rising status of working face pressure risk that is caused by the mining depth increasing and roof caving insufficiently near gob side during the mining period of Huating Coal Mine,the main factors influencing ground pressure risk are critical layer movement and periodic breakage. According to this,the critical layer is determined and the source of breaking force influence on rock burst is analyzed. Moreover,the pressure relief measures are created,and the management system is further improved. Compared with the approximate conditions near the working face,the breakage degree of ground pressure appearance has significantly declined,which guarantees the safety of the actual mining.
出处
《煤矿安全》
CAS
北大核心
2015年第8期30-32,共3页
Safety in Coal Mines
关键词
覆岩运动
冲击矿压
关键层
破断力源
矿压显现
overlying strata movement
rock burst
critical layer
breaking force
control technology
ground pressure appearance
