摘要
为满足长江防洪要求,武汉市黄埔路污水处理厂二期改建工程结构采用深基坑围护埋于地下。由于基坑位于长江大堤外滩地,深基坑具有地质条件软弱、承压水与长江水力联系紧密及周边环境复杂等特点。设计根据上述特点,经方案比较,基坑支护采用钻孔灌注桩加两道钢筋混凝土水平支撑体系,基坑降封水采用坑外高喷防渗帷幕和坑内前期深井降水、后期深井降水与封底相结合的处理方式,合理解决了基坑施工、运行及换撑拆除各个阶段的工程技术问题。
In order to meet the requirement of flood control of Yangtze River,the Stage Ⅱ reconstruction project of sewage treatment plant in Huangpu Road,Wuhan City is constructed under the ground by deep foundation pit.The deep foundation pit is located at the beach land of Yangtze River,and has the characteristics of week geological condition,tight hydraulic connection of confined water and Yangtze River and complex surrounding environment.According to the above characters,through comparison of several schemes,the bored pile with two reinforced concrete horizontal supporting systems was adopted as supporting system of the foundation pit.The high pressure shotcrete anti-seepage curtain outside the foundation pit,initial deep-well dewatering inside the foundation pit,and combination of deep-well dewatering in the late period and bottom sealing were adopted as measures for de-watering and water sealing of the pit foundation.Therefore,the technical problems in the stages of construction,operation and support replacement removing were solved.
出处
《人民长江》
北大核心
2011年第16期21-24,共4页
Yangtze River
关键词
改建
深基坑
降水
设计
污水处理厂
reconstruction
deep foundation pit
dewatering
design
sewage treatment plant
