We all know that the cement pipe is not an independent body. When it is used, it must have multiple cement pipes arranged and connected to be used. And its connection methods are also various, now let's talk about the connection method of cement drainage pipe by the editor of Wanxin.
1. Flat mouth pipe is an early interface method of cement pipe, which is difficult to produce, high production efficiency and low production cost; the steel wire concrete tape used for the interface seal is a rigid connection, but its sealing effect and seismic resistance are poor. The displacement of the foundation will cause the interface to open, so that sewage will pollute the underground soil, which has long been inconvenient for society and the environment, so this interface method is less and less practical.
2. The socket-type interface uses a rubber ring to seal the water. It is a flexible connection. The insertion depth of the interface is 80-100mm, and the relative angle of the interface is 1.5 °. , The device is fast. However, socket-type joints are not suitable for large-diameter cement pipes, because large-diameter cement pipes have circumferential cracks.
3. The flexible tongue and groove interface method is mainly applicable to cement pipes with a diameter of ≥ d1200. This interface method is also a flexible connection. This interface method has the advantages of the socket type and is more significant than the socket type, but it also has a significant feature that is not available in the socket type, which is suitable for large-diameter pipes. The depth of the joint pit of the socket pipe device is not easy to control, and it is not easy to compact when backfilling. The stress at the transition of the pipe socket is concentrated. In severe cases, the pipe body will show circumferential cracks, which affects the service life of the pipe. Well, it is evenly beared when subjected to the load force, so the application is safer; the outer wall of the socket of the socket pipe is a slope, so it is not easy to control and easy to leak when the inspection well is built, so the use of a flexible pipe will improve a lot. ; Flexible enterprise pipe can also be used as a pipe jack.