深基坑减压降水设计优化与止水帷幕隔水效应分析

Analysis of the optimization of deep-foundation pit dewatering design and the effect of a waterproof curtain

为更好地控制工程降水引发的地面沉降,根据"按需降水"原则,基于地下水动力学经典理论,分析了减压降水过程中止水帷幕的隔水效应和承压水头分布特征,探讨了通过深基坑减压降水设计优化控制坑外水位降水及地面沉降的可行性,结合工程实例,模拟分析了基坑降水优化效果,讨论了止水帷幕深度与地面沉降量的定量关系。

Land subsidence can be induced by deep-foundation pit dewatering engineering. To better control such subsidence, this study uses classical groundwater dynamics theory to analyze the conifning effect of a waterproof curtain and water head distribution during dewatering, and discusses the feasibility of groundwater head prevention and land subsidence control by optimizing the design of deep-foundation pit dewatering engineering. With respect to dewatering engineering, this paper simulates the dewatering process, analyzes the effects of optimization, and discusses the relationship between the use of waterproof curtains and land subsidence.