基坑工程中放坡开挖失稳的因素分析

基坑工程施工中,在条件允许的情况下放坡开挖是首选方案。放坡开挖相对简单,造价经济。但随着应用增多,也出现过垮塌的情况。结合几起失稳的案例,对基坑放坡开挖中可能引起失稳的因素进行了分析,并提出相应的预防措施。

Analysis on the Instability Factors of Excavation without any Protection in Foundation Pit Engineering

In the construction of foundation pit engineering, because of the simple operation and low cost, excavation without any protection is preferred if conditions permit. But with the increasing application, the collapse also appeared. Combined with several failure cases of excavation instability, analysis is made on the factors which may cause instability in excavation without any protection with corresponding preventive measures put forward.