堤角水厂改扩建工程-净水厂工程排水泵房沉井安全专项施工方案目录第一章工程概况......................................................................................................................2一.工程描述及编制依据.....................................................................................................21.1工程描述：...................................................................................................................21.2编制依据：....................................................................................................................3二.工程地质条件.................................................................................................................4三.水文地质条件.................................................................................................................5四、勘探点平面布置图：...................................................................................................6五、与沉井相关的各层土质的特征见下图所示：...........................................................8第二章沉井施工......................................................................................................................8一.沉井概况.......................................................................................................................8二.施工部署.........................................................................................................................91.沉井的主要施工方法分析.........................................................................................92.分节制作沉井规定.....................................................................................................93.沉井制作与下沉布序:.............................................................................................104.沉井验算...................................................................................................................114.1沉井砼量及重量.......................................................................................................114.2砂垫层和素砼层验算...............................................................................................114.3下沉系数...................................................................................................................134.4抗浮计算...................................................................................................................145．主要施工机械与机具配备计划...................................................................................146.劳动力组织的特点.........................................................................................................157.主要工种的劳动力配备数量.........................................................................................168.主要材料计划用量表.....................................................................................................169、沉井工艺流程...............................................................................................................1710、沉井施工示意图.........................................................................................................1811、沉井开挖分层示意图.................................................................................................1912、沉井土方开挖机械占位及土方运输行驶路线布置......
