A trenchless pipeline renewal construction system and construction method

Abstract

The invention belongs to the technical field of underground pipeline construction, and in particular relates to a non-excavation pipeline renewal construction system and construction method, which is suitable for in-situ replacement of pipe joints in the process of underground pipeline non-excavation construction, and realizes the comprehensive renewal and upgrading of old pipelines; The construction system includes setting an originating shaft and a receiving shaft at both ends of the existing underground pipeline section to be updated; a tunneling device is installed between the originating shaft and the receiving shaft, and the tunneling device excavates and cuts the soil around the existing pipeline ; The cutting surface of the front end of the tunneling device is also provided with a sealing protection device, and the structural size of the sealing protection device matches the cross-sectional size of the existing pipeline; a pulling device is also provided on the tunneling device; Excavating pipelines to update the construction system and construction methods has realized the comprehensive renewal and upgrading of old pipelines; it has satisfied the mutual replacement of underground pipelines with different diameters, and realized the capacity upgrade construction process of existing pipelines.

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 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 probl...

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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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