目 录一、工程概况.................................................................................................................................................2二、本方案的编制依据 ................................................................................................................................. 1 三、降水设计有关参数 ................................................................................................................................. 2 四、地质条件 ................................................................................................................................................. 2 4 。 1 、地层情况 ..................................................................................................................................... 2 4 。 2 、水文地质条件 ............................................................................................................................. 5 五、降水目的 ................................................................................................................................................. 5 六、降水方案设计思路 ......................................................................................................................... 6 七、降水方案 ................................................................................................................................................. 6 7.1 、承压水验算 ................................................................................................................................... 6 7 。 1. 1 、计算公式 ....................................................................................................................... 6 7 。 1.2 、基坑不同开挖部位临界开挖深度计算 ......................................................................... 6 7.1.3 、减压井的布设 ..................................................................................................................
