连续墙成槽过程掉锤事故的处理及防治

Treatment and Prevent of Hammer Dropped Down Accident During Construction of Diaphragm Wall

地下连续墙在地铁及深基坑的围护结构中已广泛使用。冲孔成槽是连续墙在硬岩段成槽的主要方式,由于受地质条件的影响及冲孔桩施工工艺的制约,在成槽过程中难免会发生卡锤或掉锤等情况。本文通过广州地铁五号线大沙东站地下连续墙施工过程中的一次掉锤处理实例,分析了掉锤事故的处理及预防方案。

Underground diaphragm wall had been great used in enclosure structure of subway and deep foundation. The embedded rock pile is the main method of diaphragm wall construct in hard rock. Hammer blocked or dropped must be happened during construction of diaphragm wall restricted of geological condition and the embedded rock Pile＇s technology. To analyse the treatment and prevent of hammer dropped down accident through the analysis of the treatment of hammer dropped down accident in Da-Sha-Dong station of Guangzhou subway line five.