摘要
受采深、构造、开采扰动等影响,冲击地压危害日益突出。针对龙家堡矿409工作面工程条件,采用压力监测、微震及电磁辐射数据分析,对409工作面划分危险区域,即409入风(回风)顺槽、409转载皮带道至411入风顺槽口门100m、411入风卡轨车硐室、408入风顺槽至边界道、-880避难硐室及-880回风石门至411回风顺槽200m范围。采用大直径钻孔卸压、钻孔爆破卸压、煤层注水等对危险区域进行冲击地压防治及效果检验,保证工作面安全生产。
Rock burst damage is becoming prominent due to the influence of mining depth, structure and disturb ance. According to the engineering background at 409 working face of Longjiabao Colliery and by data analysis of pressure monitoring,micro--seism and electromagnetic radiation, the rock burst dangerous areas are determined as follows： the 409 air--return roadway,the 100 m range from the 409 machine--roadway to the 411 new--air roadway, the 411 air coolie car chamber room, the range from 408 to the border roadway,--880 refuge chamber room and the 200 m range from the --880 air--return crosscut to 411 air--return roadway. The paper proposes the rock burst prevention and effect evaluation by pressure relief with large diameter borehole, drilling blasting and coal seam water injection in the dangerous areas, which guarantees the safety production.
出处
《江西煤炭科技》
2015年第4期118-121,共4页
Jiangxi Coal Science & Technology
关键词
冲击矿压
危险区域
卸压
爆破
防治
mine pressure shock
hazardous areas
relief
blasting
prevention and cure
