2023年梅子洲过江通道连接线降水方案6.docx

梅子洲过江通道连接线降水方案2023年.6 XX市青奥轴线地下工程降水施工方案 XX市青奥轴线地下工程 xxxx 基坑降水施工方案 xxxx二○一二年七月四日 1 XX市青奥轴线地下工程降水施工方案 目录 1工程概况............................................................................................................................................32工程地质与水文地质条件................................................................................................................32.1工程地质条件...............................................................................................................................32.2水文地质条件...............................................................................................................................33设计依据与降水目的........................................................................................................................43.1设计依据.......................................................................................................................................43.2降水目的.......................................................................................................................................44降水设计方案....................................................................................................................................44.1工程地下水风险分析与对策.......................................................................................................44.2降水设计思路...............................................................................................................................54.3疏干设计.......................................................................................................................................54.4降压设计.......................................................................................................................................64.5降水设计工作量...........................................................................................................................75抽水试验设计....................................................................................................................................85.1试验目的及任务...........................................................................................................................85.2抽水试验工作量...........................................................................................................................85.3试验方法设计...............................................................................................................................95.4抽水试验流程.............................................................................................................................20235.5结果统计与分析.........................................................................................................................20236管井构造与设计要求......................................................................................................................116.1管井构造.....................................................................................................................................116.2设计要求.....................................................................................................................................116.3质量验收.....................................................................................................................................127成井施工工艺..................................................................................................................................127.1前期准备.....................................................................................................................................127.2成井施工.....................................................................................................................................137.3洗井措施.....................................................................................................................................157.4降水常见问题与处理对策.........................................................................................................167.5特殊过程质量控制要求.............................................................................................................178降水运行管理..................................................................................................................................188.1降水运行工况.............................................................................................................................188.2降水运行管理.............................................................................................................................198.3工程排水措施.............................................................................................................................22023.4降水井保护.................................................................................................................................218.5降水对环境影响预测及应对措施..............................................................................................219应急预案..........................................................................