Subway underground excavation tunnel drainage structure

The invention relates to a subway subsurface tunnel drainage structure, and belongs to the technical field of drainage construction, the subway subsurface tunnel drainage structure comprises a drainage pipe, the water inlet end of the drainage pipe is covered with a filter cover, the filter cover is provided with filter holes, and a clamping assembly is arranged in the filter cover; the clamping assembly comprises a positioning rod, a clamping plate and a locking piece, one end of the positioning rod is fixedly connected with the inner wall of the filter cover, the other end of the positioning rod is fixedly connected with the clamping plate, and one end of the locking piece penetrates through the clamping plate and then abuts against the outer wall of the drainage pipe; the drainage pipe has the advantages that the risk of pipeline blockage is reduced, and normal drainage is guaranteed. 本申请涉及一种地铁暗挖隧道排水结构，属于排水施工的技术领域，其包括排水管，所述排水管的进水端笼罩有过滤罩，过滤罩本身具有过滤孔，过滤罩内设置有夹持组件；夹持组件包括定位杆、夹板和锁紧件，定位杆一端与过滤罩内壁固定连接，另一端与夹板固定连接，排水管