砂砾地质桩基施工技术应用

Application of sand and gravel geological pile foundation construction technology

砂砾地质桩基施工难度大,机械成孔过程中存在坍孔、漏浆等现象,成孔困难,且有钻头被埋没的风险;人工挖孔存在渗水大、护壁难以施工、安全风险大等问题,本文根据不同的钻孔方法采取针对性措施,提出漏浆、卡钻或埋钻等特殊情况的处理措施,保障顺利成孔和灌注混凝土,解决这一疑难问题。

The construction of sand and gravel geological pile foundation is very difficult. In the process of mechanical hole formation, collapse hole and slurry leakage occur. Drilling hole formation is difficult, and there is a risk of drilling tools being buried. Artificial dig-hole there exists large water seepage, the borehole wall protection construction is difficult, the problem such as security risk, to take corresponding measures according to the different methods of drilling, slurry leakage, drilling tool stuck or the treatment method of drill bury and other special circumstances. To ensure the smooth drilling and pouring of concrete to solve this problem.