摘要
为解决降水井施工难度大、周期长和降水效果不佳的问题,以实际项目为依托,提出了一种坑中坑降水管井技术,采用有限元软件ABAQUS进行数值分析,并进行现场试验,综合分析了降水管井的降水效果,得到了降水管井技术设计中重要参数(孔径和孔间距)对渗流量的影响规律。结果表明:渗流量随着降水管井孔径增大而增大,随着孔距增大而减小,并得到渗流量随孔径、孔距大小之间呈Extreme2D的函数关系,数值分析结果与工程实际应用结果基本吻合。本文提出的降水管井技术及得到的相关规律对实际工程应用具有一定的参考价值。
In order to solve the problems of difficult construction,long period and poor dewatering effect of dewatering wells,a pit-in-pit dewatering tube well technology is proposed based on an actual project.Finite element software ABAQUS is used for numerical analysis,and field tests are carried out.The dewatering effect of dewatering tube wells is comprehensively analyzed,and the influence rules of important parameters(aperture and hole spacing)in the technical design of dewatering tube wells on seepage flow are obtained.The research results show that the seepage flow increases with the increase of the diameter of the downcomer well and decreases with the increase of the hole spacing.The function relationship between the seepage flow and the diameter and the size of the hole spacing is Extreme2D.The numerical analysis results are basically consistent with the actual application results of the project.The dewatering tube well technology proposed in this paper provides good guidance for dewatering in foundation pit construction,and the relevant laws obtained have certain reference values for practical engineering applications.
作者
万学林
陈德洋
王哲
蓝猛
刘生文
Wan Xuelin;Chen Deyang;Wang Zhe;Lan Meng;Liu Shengwen(China Construction third Bureau Group(Shenzhen)Co.,Ltd.,Shenzhen,Guangdong 518000,P.R.China)
出处
《地下空间与工程学报》
CSCD
北大核心
2023年第S02期1021-1027,1034,共8页
Chinese Journal of Underground Space and Engineering
关键词
基坑降水
坑中坑降水管井
数值分析
渗流量
foundation pit dewatering
pit-in-pit dewatering tube well technology
numerical analysis
seepage discharge
