冲、爆、钻复合性钻进工艺在大滚石、孤石桩孔中的应用

Application of PercuSsion, Explos ion and Drilling Combined Techinque for Penetration of Large Rolling Rock and Baulders

摘要:

在大口径工程施工中，采用以往一般方法对付某些特殊复杂地层效果欠使。本文所介绍的采用钢丝绳冲击钻迸、爆破与硬质合金回转钻进（即冲、爆、钻）相结合复合性钻进工艺，基本解决了在大滚石、孤石桩孔中难以施工的问题。

Abstract:

Difficulties encountered in drilling large rolling rock and boulders are basically eliminated by useof a combined drilling techitiqee which combines cable pelcussive drilling,explosion with tungston carbide rotary drilling methods.