名汇广场5#商业楼基坑降水及土方开挖专项方案天津市房信建筑工程总承包有限公司二0一五年四月目录第一章概述......................................................................................................................11.1编制依据.............................................................................................................11.2工程简介.............................................................................................................21.3周边环境情况.....................................................................................................21.4施工现场总平面布置图.....................................................................................41.5工程地质及水文地质条件.................................................................................51.6基坑支护情况.....................................................................................................9第二章基坑开挖施工的重点、难点及应对措施.........................................................132.1基坑开挖重点、难点.......................................................................................132.2应对措施...........................................................................................................13第三章施工部署.............................................................................................................143.1工期目标...........................................................................................................143.2施工组织机构...................................................................................................143.3施工前准备工作...............................................................................................143.4拟投入机械及劳动力计划...............................................................................15第四章基坑降水.............................................................................................................164.1降水施工..........................................................................................................164.1.1基坑降水目的........................................................................................164.1.2降水施工部署........................................................................................174.1.3降水施工...............................................................................................174.2降水井施工技术、质量保证措施...................................................................20第五章土方开挖.............................................................................................................225.1土方开挖前施工准备.......................................................................................225.2施工流程...........................................................................................................225.3开挖思路...........................................................................................................225.4电梯井、集水坑位置土方开挖.......................................................................25第六章基坑监测.............................................................................................................256.1基坑监测特点及重点.......................................................................................256.2监测依据....................
