桥梁基坑开挖专项施工方案.docx

桥梁基坑开挖专项施工方案

第一篇：桥梁基坑开挖专项施工方案连盐铁路站前工程LYZQ-Ⅴ标桥梁基坑开挖专项施工方案工程名称：跨沿海高速、苏北灌溉总渠特大桥编写单位：中铁十局集团连盐铁路Ⅴ标工程第一分部编写人：日期：年月日审核人：日期：年月日批准人：日期：年月日中铁十局集团连盐铁路Ⅴ标工程第一分部目录1．工程概况及水文地质情况..................................................................31.1工程简介..........................................................................................31.2工程地质条件..................................................................................31.3水文地质特征..................................................................................32.编制说明.................................................................................................32.1编制依据..........................................................................................43.编制范围.................................................................................................44.安全防护措施........................................................................................54.1总原则...........................................................................................54.2基坑施工安全防护方法...............................................................54.3承台基坑施工安全防护措施.........................................................64.4地下管线防护.................................................................................84.5施工人员在既有线旁作业时操作规定：......................................94.6夜间在既有线旁作业时操作规定：..............................................95.安全保证措施........................................................................................96.雨季施工措施......................................................................................107.环水保措施...........................................................................................118.文明施工措施......................................................................................12桥梁基坑开挖专项安全防护方案1．工程概况及水文地质情况1.1工程简介跨沿海高速、苏北灌溉总渠特大桥位于滨海县境内，横跨沙浦河、S327省道、北八滩渠、中八滩渠、沿海高速、调度河、淮河入海道及苏北灌溉总渠，起讫里程为DK167+277.735～DK179+870.975m，中心里程：DK173+573.905，设计桥长12.59324km。墩台采用钻孔灌注桩基础，直径有1.0m、1.25m、1.5m、1.8m四种，均为摩擦型灌注桩，桩长42.5m～99m，总桩数3