Decompression and precipitation scheme optimization design in deep foundation of composite aquifer area

In light of decompression technology difficulty in deep foundation construction process in composite aquifer region,taking Fengxian section foundation of corridor crossing river engineering of Hongmei south road-Jinhai road in Shanghai city as the example,it proposes combination method of pumping test and three-dimensional numerical simulation method,so as to achieve the goal of decompression scheme optimization design.