Trenchless pipeline renewal construction system and method

Abstract

The invention belongs to the technical field of underground pipeline construction and particularly relates to a trenchless pipeline renewal construction system and method. The trenchless pipeline renewal construction system and method are suitable for in-situ replacement of a pipe section in a trenchless construction process of an underground pipeline and achieve comprehensive renewal and upgrading of an old pipeline. According to the construction system, a starting well and a receiving well are arranged at the two ends of an underground existing pipeline section to be renewed correspondingly;a driving device is arranged between the starting well and the receiving well, the driving device conducts driving and cutting on a soil body around the existing pipeline, a sealing and communicationkeeping device is further arranged on a front end cutting face of the driving device, and the structure dimension of the sealing and communication keeping device is matched with the sectional dimension of the existing pipeline; and a pulling device is further arranged on the driving device. The trenchless pipeline renewal construction system and method achieve comprehensive renew and upgrading ofthe old pipeline, meet mutual replacement between underground pipelines of different diameters and achieve the capacity upgrading construction process of the existing pipeline.

Description

technical field [0001] The invention belongs to the technical field of underground pipeline construction; in particular, it relates to a non-excavation pipeline renewal construction system and a construction method. Background technique [0002] In recent years, accidents such as heavy rain and waterlogging, pipeline bursting, road collapse and other accidents have occurred frequently in China due to pipeline corrosion and aging; the design life of municipal pipelines is generally 50 years, and the pipelines built in the 1980s are about 40 years old. In addition, due to the influence of improper operation and maintenance management and frequent construction, the actual corrosion and damage of the pipeline is more serious. In addition to the increase of urban population density, the capacity of the old pipeline is also difficult to meet the functional requirements. There are a large number of old pipelines in cities. Faced with the problem of comprehensive renewal; the curren...

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Problems solved by technology

[0002] In recent years, accidents such as urban heavy rain, waterlogging, pipeline burst, and road collapse caused by pipeline corrosion and aging have occurred frequently in China in recent years; the design life of municipal pipelines is generally 50 years, and the age of pipelines built in the 1980s is about 40 years, which is close to or even exceeds the design use In addition, due to the influence of improper operation and maintenance management and frequent construction, the actual corrosion and damage of pipelines is more serious. In addition to the increase of urban population density, the capacity of old pipelines is difficult to meet the functional requirements. There are a large number of old pipelines in cities. Facing the problem of comprehensive renewal; current pipeline repair and renewal technologies are mainly divided into two categories, one is the open-cut method, and the other is the non-excavation technology; the open-cut method has been difficult to meet the requirements of many boundary conditions in the urban core area; and the existing The existing trenchless technologies mainly include in-situ solidification method, pipe penetration method, winding method, etc. These methods have certain advantages in pipeline repair, but they cannot be applied to the complete renewal and volume expansion of underground pipelines.

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