沉井施工工艺在给排水工程中的应用  

Application of Caisson Construction Technology in Water Supply and Drainage Engineering

作　　者：詹志伟 张倬博 张贤 ZHAN Zhiwei;ZHANG Zhuobo;ZHANG Xian(Guangdong Yuantian Engineering Co.,Ltd.Guangzhou 511338,China)

机构地区：[1]广东省源天工程有限公司,广州511338

出　　处：《广东土木与建筑》2023年第9期94-96,102,共4页Guangdong Architecture Civil Engineering

摘　　要：沉井设计与施工在给水排水工程一些构筑物中得到了很好应用,是一种安全、适用、经济的方案;缺点是施工期较长,对粉细砂类土在井内抽水易发生涌水涌砂现象,造成沉井结构倾斜,沉井下沉过程中遇到的大孤石或井底岩层表面倾斜过大,均会给施工带来一定困难。应进行下沉方式的选择,对坑底应进行抗隆起、抗管涌等相关的稳定验算。The design and construction of sunken wells have been well applied in some structures of water supply and drainage engineer-ing,making them a safe,applicable,and economical solution;The disadvantage is that the construction period is long,and the phenome-non of water gushing and sand gushing can easily occur when pumping fine sand soil in the well,causing the structure of the open caisson to tilt.The large boulders encountered during the sinking process of the open caisson or the surface inclination of the rock layer at the bot-tom of the well is too large,which will bring certain difficulties to the construction.The selection of sinking method should be carried out,and stability calculations related to anti uplift and anti piping should be carried out on the bottom of the pit.

关 键 词：沉井 设计要点 构造要求 沉井缺点 稳定验算 

分 类 号：TU744[建筑科学—建筑技术科学]