城市轨道交通车站基坑事故统计分析

Statistical analysis of the accidents of foundation pit of the urban mass rail transit station

摘要: 本文从工程风险的角度对所搜集的52例城市轨道交通车站基坑事故进行分析,归纳了6种事故类型,并明确指出"渗流破坏、支撑失稳、坑内滑坡"为最常见的三类事故。通过对各事故类型进行事故原因的统计分析,得知地下水的防治是关乎基坑工程安全的首要因素,不规范作业是基坑事故发生的第二诱因。

Abstract: Based on the statistical analysis of 52 accidents of the foundation pits of the urban mass rail transit station,six types of the accidents were summarized.And it was ascertained that the most common accidents were the leakage damage,supporting failure and landside in the pit.The reasons of six types of the accidents were discussed.It was concluded that the underground water was the primary factor and non-standard operations was the second factor of the pit accident.