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

作　　者：黄鑫磊[1,2] 何晔[1,2] 占光辉[1,2] 

机构地区：[1]上海市地质调查研究院,上海200072 [2]国土资源部地面沉降监测与防治重点实验室,上海200072

出　　处：《上海国土资源》2014年第2期25-27,61,共4页Shanghai Land & Resources

基　　金：国土资源部公益性行业科研专项(201311045);上海市科委科研项目(12231200700)

摘　　要：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.

关 键 词：地面沉降 深基坑工程 降水设计 止水帷幕 沉降防控 

分 类 号：P642.26[天文地球—工程地质学]