摘要
乌兰煤矿避难硐室地面救生孔施工要穿过塌陷区裂隙,为避免塌陷区裂隙对施工的影响,该孔采用定向、大斜度、大孔径钻进完成。文中还介绍了针对矿区上部地层裂隙发育的条件下在钻进过程中采用空气钻进与泥浆钻进相结合的钻进方法。
To avoid the influence on construction caused by the fractures of subsidence area, ground life-saving hole in refuge underground of Wulan coal mine must pass through the fractures of subsidence area and the hole is done by using the drill with directional high slope and large aperture. The paper also introduces the drilling method of combining air drilling and mud drilling during the drilling process under the condition of the developing upper stratum fracture of the mining area.
出处
《神华科技》
2012年第3期42-44,共3页
Shenhua Science and Technology
关键词
定向钻进
大斜度
大孔径
空气钻进
泥浆钻进
钻进方法
Directional drilling
High slope, Large aperture
Air drilling, Mud drilling
Drilling method
