Author(s): Chen Xinbing, China Railway Construction Group Co., Ltd.
Pages: 30-33
Year: 2014 Issue:  13
Journal: Construction Technology
Keyword:  underground; foundation excavation; piles; impact drill; construction;
Abstract: Based on retaining piles construction in a project,this paper mainly introduced construction technology of reverse circulation impact drill in strong weathered strata. According to the analysis on rock geological conditions,the effect of geological conditions on construction was judged,construction methods were determined based on influence factors. Meanwhile,underground water concrete pouring measures were expounded,the integrity of pile was judged by transient time domain analysis method.