中山路改造工程沉井施工方案.doc

木渎中山路（灵天路-金枫路立交） 改造工程 沉 井 专 项 施 工 方 案 中亿丰建设集团股份有限公司 木渎中山路改造工程项目部 目 录 第一章、编制依据及原则·····································4 一、编制依据·················································4 二、编制原则·················································4 第二章、工程概况················································5 一、工程简介··············································5 二、场区地形·················································6 三、工程地质情况·············································7 四、工程材料···············································7 第三章、施工前准备·······································8 一、施工准备阶段··········································8 二、材料进场准备··········································8 三、机械设备进场准备············································8 四、劳动力进场准备·········································9 五、沉井施工前基坑降水······································9 第四章、沉井施工·····································14 一、沉井施工方案选择·····································14 二、沉井施工准备·········································14 三、布设测量控制网···································15 四、沉井制作··········································15 五、沉井下沉·················································18 六、测量控制与观测··········································20 七、沉井下沉常遇到的问题，预防措施及处理方法·······················21 八、沉井封底、底板施工··············································23 第五章、质量保证措施·········································25 一、工程质量保证体系框图········································25 二、工程质量保证措施·········································25 三、允许偏差项目··········································27 四、沉井易渗漏部位的质量控制要点·································27 第六章、安全保证措施····································28 一、作业人员安全保证措施··········································28 二、作业现场安全保证措施······································28 第七章、安全事故与应急救援预案································29 一、应急准备·············································29 二、应急响应施·········································30 三、事故应急措施············································31 第一章 编制依据及原则 一、编制依据 1、本工程设计施工图纸及有关说明； 2、岩