The Trenchless Technology In Drainage Works Applied Research

Trenchless technology is referred to any technology and method which is used to lay, restore and replace various public underground facilities without excavating the earth's surface. Compared with the tradition construction method, trenchless technology enjoys several advantages, such as no effects on the traffic , no destroy to the environments, short construction period, low total cost and high security.Rain and sewage conduit bear a very important mission of city's drainage. Their construction and maintain indicate the civilization degree of the city. What is more, they are underground pipelines buried most deeply which will exert great effects on the road traffic, the going through of the vehicles and pedestrian's coming and going out, and will cause immense inconvenience to society if traditional slotting method is used to re-lay rain and sewage conduit.Yang Pu District is an area which bears a lot of heavy tube. Especially Central Plains area and Wujiaochang, where heavy tube has happened in many road sections almost every year since 1993, which caused the subsiding of the road surface and influenced the traffic safety. The main cause of the heavy tube is: the original drainage-pipe being in the grave quicksand tier. The quicksand tier does not stabilize extremely under the groundwater effect.It is proved by practice that the trenchless technology is an advanced technology with strong pragmatic use, broad suitability and good efficiency which will play a more important role in the future civil construction and enjoys a vast application prospect.