Well sealing structure of dewatering well for penetrating raft

The utility model discloses a dewatering well shut-in structure for penetrating through a raft, which comprises a cushion layer (1), a waterproof protective layer (2) is laid above the cushion layer (1), and the raft (3) is arranged on the upper surface of the waterproof protective layer (2), and is characterized in that the dewatering well shut-in structure comprises a plurality of vertical long pipes (4), the vertical long pipes (4) vertically extend underground to penetrate through the raft (3), the waterproof protective layer (2) and the cushion layer (1), and the vertical long pipes (4) are connected with the cushion layer (1). The device is suitable for the dewatering well under the geological conditions of high underground water level, large permeability coefficient and abundant underground water, the quality of well sealing backfill concrete can be guaranteed, and water seepage of the bottom plate is effectively prevented. 本实用新型公开了一种用于穿筏板的降水井封井结构，包括垫层(1)，垫层(1)上方铺设有防水保护层(2)，筏板(3)设置于所述防水保护层(2)上表面，其特征在于，