X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 施 工 方 案 编制人: 审核人: 审批人: X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 目录 1.概况 ...................................................................... 1 3. 施工特点分析及主要内容 ................................................... 1 4.自然地理条件及沿线气候 .................................................... 1 5.施工部署 .................................................................. 1 5.1 施工单位组织机构 ..................................................... 1 5.2 工程前期准备 ......................................................... 2 6.非开挖穿越具体施工方案 .................................................... 3 6.1 非开挖穿越工程的施工步骤 ............................................. 3 6.2 复测 ................................................................. 3 6.3 挖工作坑 ............................................................. 3 6.4 导向孔施工 ........................................................... 3 6.5 回扩 ................................................................. 4 6.6 管材的焊接 ........................................................... 4 6.7 管线的回拖 ........................................................... 4 6.8 应急预案 ............................................................ 5 6.9 对可能发生的突发事故的预防和处理 ..................................... 7 6.10 拖管过程中对防腐层保护措施 .......................................... 7 6.11 泥浆配制 ............................................................ 8 6.12 泥浆的处理和回收方案 ................................................ 8 6.13 管道直埋具体的方案 .................................................. 9 7.工期、质量保证措施 ....................................................... 11 8.应急预案 ...........................................