浅析特殊地质条件下人工挖孔桩施工技术

Construction Technology for Manually Excavated Pile under Special Geological Condition

在重庆江滨、河滩等地带进行建筑工程人工挖孔桩基础施工,常会遇到地下水丰富、流砂层、淤泥较厚等的情况,因而极易造成孔内渗水、涌砂和孔壁坍塌成孔较困难。该文对重庆地区特殊地质条件下挖孔桩的成孔技术进行探讨,总结介绍工程实践中可行的一些施工措施,供同行参考。

During the manually excavated pile construction in Chongqing benchland area,problems like excessive groundwater,liquid sand layers and thick silt are often met,easily causing inner bore water seepage,sand gushing and difficulty in pore-forming by pile-forming.The pore forming technology for excavated pile under special geological condition in Chongqing is discussed and some feasible construction measures for engineering practice are introduced for reference.