煤矿用空气螺杆钻具的研制与应用

Development and Application of Air Downhole Motor in Coal

为了满足安全开采,设计一种空气螺杆钻具。其应用于定向施工瓦斯抽放孔,利于在煤炭开采前对煤层进行瓦斯抽采,还可探测岩浆侵入和瓦斯突出,减少煤矿事故的发生。其特点是启动压力低,机械效率高,具备井下防爆性能。

Based on the safety of mining, the air downhole motor is designed. It is used in directional construction of gas drainage hole. It is beneficial to gas drainage of coal seam before coal mining, it can also detect magma intrusion and gas outbursts, and it reduce the occurrence of coal mine accidents. Its characteristics are low staring pressure and high mechanical efficiency, it can meet the underground explosion-proof.