摘要
在高应力沿空巷道掘进中,采用超前钻孔卸压爆破技术使巷道前方提前产生自由面,释放超前压力,减轻了巷道的高应力扰动;采用卸压槽技术,减轻了巷道围岩应力对巷道浅层的破坏,保护了巷道支护的完整性,这两项技术是在巷道支护领域值得推广应用的新技术。
In the driving of gob side entry with high stress,the advance borehole relieving shot technology was used to form free surface ahead of the roadway to release pressure and reduce the high stress disturbance to roadway.The pressure relief slot was used to reduce the damage of rock stress to tunnel shallow layer and protect the integrity of the roadway support.These two lechniques are worthy to extend.
出处
《中国矿山工程》
2015年第2期37-39,共3页
China Mine Engineering
关键词
沿空掘进
应力转移
卸压爆破
卸压槽
gob-side entry driving
stress transfer
relieving shot
pressure-relief slot
