基坑帷幕与管井防渗降水效果研究  

On the Seepage Prevention and Water Level Lowering Effect of Curtain and Tube Well in Foundation Pit

作　　者：张文侃 刘威 徐世濠 陶军 ZHANG Wenkan;LIU Wei;XU Shihao;TAO Jun(Hunan Provincial Water Transportation Construction&Investment Group Co.,Ltd.,Changsha 410004,China;State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China)

机构地区：[1]湖南省水运建设投资集团有限公司,湖南长沙410004 [2]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《水电与新能源》2023年第3期6-9,共4页Hydropower and New Energy

基　　金：湖南省交通科技项目资助(项目合同编号:202125)。

摘　　要：帷幕与管井是基坑防渗降水的常用措施。利用ABAQUS有限元计算软件,探究帷幕与管井组合使用条件下,不同工况对基坑防渗降水效果的影响,分析基坑底部降水深度和基坑渗流量随帷幕管井基本参数的变化规律。并在此基础上,利用多元线性回归方法,提出了基坑底部降水深度的快速计算公式。经对该计算公式进行准确性验证表明,计算误差在5%以内,具有比较好的拟合效果。Grouting curtain and tube well are commonly used in seepage prevention and water level lowering of foundation pits.The ABAQUS finite element software is used to explore the seepage prevention and water level lowering effect of the curtain and tube well in foundation pit under different working conditions,and analyze the variations of the water level and the seepage flow of the foundation pit with the basic parameters of the curtain and tube well.Then,a fast calculation formula is proposed for the estimation of the water level lowering depth at the bottom of the foundation pit using the multiple linear regression method.Verification with practical examples shows that the proposed formula is of a good fitting performance with the calculation error within 5%.

关 键 词：基坑防渗降水 帷幕 管井 数值模拟 

分 类 号：TU75[建筑科学—建筑技术科学]