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以泗阳第二抽水站工程为例，介绍大型非对称结构沉井群的设计和采用砖砌底模无垫木制作、干法下沉的施工技术及深井井点降水措施。
Taking Siyang No.2 Pumping Station Project as an example, this paper introduces the design of large-scale unsymmetrical structural sinkhole group and the construction technology of using bottomless mold of brickwork, dry sinking method and precipitation measure of deep well.