| 摘要 |
PURPOSE: A sealing gasket for an underground structure is provided to improve the structural stability by adhering closely a presser part to an underground conduit by the elastic force of an elastic spring. CONSTITUTION: A sealing gasket for an underground structure comprises a main pipe(100), a sub-pipe(200), and a presser part(300). A main pipe passes through a conduit line hole of an underground structure. The sub-pipe is combined with the main pipe. One side of the sub-pipe adheres closely to the exterior of the underground structure. The presser part is made of the rubber or metal. The presser part is arranged inside the sub pipe. The presser part adheres closely to the elastic force of an elastic spring(50) to an underground conduit(20). |
