沣西新城应急给水厂项目输水管道 过桥段施工方案 编制: 审核: 批准: 日期: 2016 年 1 月 1 日 陕西有色建设有限公司 目 录 第一章 工程概况 工程概况··············································1 第二章 施工准备 施工准备··············································2 第三章 管沟施工 测量放线··············································3 管沟开挖··············································4 管沟施工··············································5 管沟盖板施工·································