冲击反循环钻进工艺在滑坡治理工程中的应用

大口径钻孔灌注桩的入岩问题 ,历来是广西基础施工中的一大难题。最近 ,广西第一地质工程地质施工公司引进了冲击反循环钻进方法用于滑坡治理工作 ,取得重大突破。文章结合工程实例着重介绍该方法的钻进原理、成孔工艺、技术参数选择、事故的预防和处理以及技术经济指标的对照和分析等 ,可供基础施工的同行们借鉴。

APPLICATION OF PERCUSSIVE REVERSE DRILLING TECHNOLOGY ON ENGINEERING FOR HANDING LANDSIDE

The entering-rock problem of pouring pile through large-diameter hole drilling is always the biggest difficult problem in the fundamental construction of Guangxi. Recently the Guangxi First Geological Engineering Construction Company introduces the percussive reverse drilling method, and has made a great breakthrough. This article with successful engineering example emphatically introduces the method, mostly the drilling principle, hole completion technology, selection of technologic parameters, accident prevention and handling, and contrary and analysis of technological and economical indices and so on. Persons of same occupation can use drilling method for reference.