合肥至福州铁路工程（闽赣）段Ⅱ标段陈山坞特大桥深基坑专项施工方案目录1.编制依据..............................................................42.工程概况..............................................................43.地质水文情况..........................................................43.1自然特征（地形地貌、地质、水文、气象等）............................43.1.1地形地貌..........................................................43.1.2地质特征..........................................................43.1.3水文特征..........................................................43.2气象环境............................................................54.基坑支护施工..........................................................54.1确定方案.............................................................54.2钢板桩支护施工方案..................................................54.2.1钢板桩施工工艺....................................................54.2.2施工准备..........................................................54.2.3钢板桩的吊运、插打................................................74.2.4钢板桩施工可能遇到的问题及预防措施................................84.2.5钢板桩的拆除......................................................85.土方开挖施工..........................................................85.1施工准备............................................................85.1.1清表..............................................................85.1.2制定开挖方案......................................................95.1.3清理疏通弃土便道..................................................95.1.4测量放样..........................................................95.2开挖路线............................................................95.3开挖方案............................................................95.4成品保护............................................................96.深基坑监测...........................................................106.1水平位移监测.......................................................106.2竖向位移监测.......................................................10中交一航局京福铁路客专闽赣Ⅱ标项目经理部合肥至福州铁路工程（闽赣）段Ⅱ标段陈山坞特大桥深基坑专项施工方案6.3深层水平位移监测..................................................116.4倾斜监测...........................................................116.5裂缝监测...........................................................116.6钢板桩内力监测....................................................126.7土压力监测.........................................................126.8空隙水压力监测.....................................................126.9地下水位监测......................................................137.深基坑施工中的安全保证措施...........................................137.1思想保证措施........................................................137.2经济保证措施.......................................................137.3安全管理措施.......................................................137.3.1安全目标.........................................................137.3.2安全保证体系.....................................................147.3.2.1建立健全安全管理组织机构........................................147.3.2.2安全保证体系...................................................167.3.2.3安全生产管理机构...................................
