目录一．编制说明.....................................................................................................-1-1．编制依据................................................................-1-2．适用范围................................................................-1-3．编制原则................................................................-1-二．工程概况........................................................................................................-1-三．工程地质及水文...............................................................................................-2-1．工程地质................................................................-2-2．水文情况................................................................-4-3．施工场地周围环境........................................................-4-四．基坑开挖风险点分析及应对措施........................................................................-5-1.基坑开挖对仙栖铁路的影响分析.............................................-5-2.基坑开挖对地铁2号线的影响分析............................................-6-3.基坑开挖对百水河汛期泄洪的影响...........................................-7-4.深基坑开挖自身风险分析...................................................-8-五．施工总体安排..................................................................................................-9-1．施工方法................................................................-9-2．施工计划安排...........................................................-10-3．施工主要进度指标.......................................................-10-4．资源配置...............................................................-10-六．施工方案.......................................................................................................-11-1．围护结构施工...........................................................-12-2.高压旋喷桩施工.........................................................-15-3．冠梁及砼支撑施工.......................................................-18-4．百水河改道及铺盖系统施工方法...........................................-20-5．降水方案...............................................................-21-6．土方开挖施工方案.......................................................-21-7．桩间网喷施工...........................................................-27-8．钢支撑架设施工.........................................................-29-9．监控量测...............................................................-34-七．常见问题及应对措施.......................................................................................-55-1.围护桩偏位..............................................................-55-2.桩间挂网喷砼不平整......................................................-56-3.钢围檩背部存在孔隙......................................................-56-4.钢支撑轴力下降..........................................................-56-5.土方开挖时机械触碰钢支撑................................................-56-6.土方开挖出现超挖现象....................................................-56-7.基坑出现渗水............................................................-57-八．应急预案.......................................................................................................-57-1.应急预案方针与目标............................................
