进水井及进水箱涵专项方案.doc

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1、张江中区雨水泵站工程进水箱涵基坑围护专项方案上海浦东城市建设实业发展有限公司2010年12月目录1、编制说明····························································51.1、工程概况····························································51.2、工程简介····························································51.3、编制依据····················

2、········································51.4、施工现场平面布置图··················································61.5、工程地质····························································71.6、原地面未降坡前顶管基坑相关参数······································81.7、井位周边构筑物······································

3、·················92、SMW工法围护施工·················································92.1、施工工艺流程图······················································92.2、施工方法和技术保证措施···············································102.2.1、维护结构平面、立面布置图············································102.2.2、测量

4、放样···························································112.2.3、地面降坡···························································132.2.4、开挖导向沟槽·······················································132.2.5、三轴搅拌桩孔位定位················································132.2.6、深层搅拌桩施工

5、顺序················································142.2.7、三轴搅拌桩施工····················································142.2.8、插、拔H型钢·······················································142.2.9、施工技术措施·······················································152.2.10、高压旋喷桩施工··········

6、··········································162.2.11、基坑外井点降水····················································182.2.12、基坑内压密注浆····················································202.2.13、基坑围护结构渗漏预防措施·········································213、基坑开挖及支撑······························

7、·······················223.1、围护桩顶围檁施工····················································223.2、分项工程施工方法····················································223.3、冠梁施工注意事项····················································223.4、基坑开挖··················································

8、·········223.5、基坑开挖前的准备工作········