目录1工程概况.................................................................................................................21.1 工程简介 ....................................................................................................... 0 1.2 箱涵构造 ....................................................................................................... 1 1.3 工程量 ........................................................................................................... 1 2 开挖方案 ................................................................................................................. 2 2.1 开挖整体思路 ............................................................................................... 2 2.2 施工准备 ....................................................................................................... 3 2 。 3 施工工艺 ....................................................................................................... 4 2.4 基坑排水 ....................................................................................................... 5 2 。 5 上下人通道搭设 ........................................................................................... 5 3 机械、人员安排 ..................................................................................................... 6 4 进度计划 ................................................................................................................. 7 5 预防、应急措施 ..................................................................................................... 7 5.1 基坑坍塌滑坡 ............................................................................................... 7 5 。 2 基坑坑底隆起 ............................................................................................... 8 5.3 坍塌事故应急救援 ....................................................................................... 8 6 安全文明施...
