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

Abstract:

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.