人工挖孔桩穿越淤泥及特细黄砂土层时的施工

The construction for manual hole digging pile cross the silt and extra fine yellow sand soil

分析了目前人工挖孔桩施工出现涌水、涌砂及护壁垮塌现象时的三种处理方法,以柏宁酒店项目为施工背景,重点介绍了该项目提前插打钢筋加稻草和麻袋加固的施工处理方法,指出该方法有效解决了人工挖孔桩穿越淤泥及特细黄砂土层时出现的涌水、涌砂及护壁垮塌现象,防止了事故的发生,节约了施工成本及时间。

It analyzes the current three methods, which solved problem by gushing water and sand and the collapse of wall protection in the con-struction of manual hole digging pile, based on the project of Boning hotel for background, this paper emphatically introduces the reinforcement measure by insert steel and straw and gunny bag. This method can effectively solve the problem, like gushing water and sand and the collapse of wall protection when the manual hole digging pile cross the silt and extra fine yellow sand soil, this method can prevent accident happen, save construction cost and time.