摘要
近年来,地面塌陷多发,对社会造成很大损失。为研究地面塌陷原因,本文基于2021年10月9日深圳某道路邻近在建基坑侧发生地面塌陷这一事故,通过事故现场照片、监测数据、勘察报告以及施工图纸等相关资料,研究地面塌陷的形成机制。研究结果表明,花岗岩残积土软化崩解的特性,以及事发前的暴雨,是形成地面塌陷的客观原因。基坑锚索施工质量、截水帷幕失效、基坑肥槽长时间未回填、管沟未按要求回填,是形成地面塌陷的主观原因。
In recent years,frequent ground subsidence has caused great losses to the society.In order to study the cause of ground collapse,this paper studies the formation mechanism of ground collapse based on the ground collapse accident that occurred on October 9,2021 on the side of a road adjacent to the foundation pit under construction in Shenzhen through site photos,monitoring data,investigation report,construction drawings and other relevant data.The results show that the softening and disintegration characteristics of the residual soil and the heavy rain before the accident are the objective reasons for the ground collapse.The subjective reasons for ground collapse are the quality of foundation pit anchor cable construction,the failure of water cutting curtain,the failure of foundation pit manure groove to be backfilled for a long time and the failure of pipe trench to be backfilled as required.
作者
潘启钊
刘锡儒
杨晨
赵家福
PAN Qi-zhao;LIU Xi-ru;YANG Chen;ZHAO Jia-fu(Shenzhen Gongkan Geotechnical Engineering Co.,Ltd.,Shenzhen 518026)
出处
《广州建筑》
2023年第2期100-104,共5页
GUANGZHOU ARCHITECTURE
基金
深圳市科技创新委研发资金资助(项目编号及名称:重20180213断裂带的岩土特性及建筑桩基施工关键技术研发)。
关键词
地面塌陷
事故分析
花岗岩残积土
锚索
ground collapse
accident analysis
granite residual soil
anchor cable
