Construction method for repairing underground pipeline through non-excavation pipe expansion on original pipe position

Abstract

The invention discloses a construction method for repairing an underground pipeline through non-excavation pipe expansion on an original pipe position. The method comprises the following steps: 1) digging a working pit of a drilling machine and a working pit of a dragging pipe according to experience and distance; 2) disconnecting and taking out an original pipeline; 3) placing a drilling machine on a guiding side of the working pit of drilling machine and then performing guiding operation for penetrating a drilling rod through a to-be-expanded pipeline till entering into the working pit of dragging pipe; 4) jointing a pipe-expansion cutter bit into the working pit of dragging pipe; 5) pulling back the drilling machine; 6) moving the drilling machine to one side of the working pit of drilling machine in the step 1), and by taking the working pit of dragging pipe as the next working pit of drilling machine, judging the position of the next working pit of the dragging pipe according to a traction force detected in the step 5) and digging the next working pit of the dragging pipe; 7) splicing the pipeline; 8) completing the paving and splicing of all the to-be-constructed pipelines. According to the construction method provided by the invention, through the combination of the operation of drilling machine and the cutting of the pipe-expansion cutter bit, the effective paving of the new pipeline on the original pipe position under the non-excavation condition can be realized.

Description

technical field [0001] The invention relates to the field of pipeline construction, in particular to a construction method for repairing an underground pipeline without excavating a cracked pipe at the original pipe position. Background technique [0002] Urban underground pipelines are responsible for the city's information transmission, energy transmission, drainage and disaster reduction, and waste disposal functions. They are the material basis for the city's survival and development, and are an important part of urban infrastructure. It is an important foundation and guarantee for healthy, coordinated and sustainable development of cities and cities. In recent years, with the acceleration of urbanization, the construction of urban underground pipelines has developed rapidly, and the types and quantities of municipal pipelines laid under urban roads have also tended to be numerous. However, there are more and more problems with underground pipelines, and the resulting p...

AI Technical Summary

Problems solved by technology

[0003] For urban underground pipelines with structural defects, a comprehensive excavation and replacement of new pipes requires a huge amount of work. Obviously, the problem cannot be fully solved in a short time, especially the damage to urban roads, environmental pollution, and traffic jams caused by excavation. The investment is difficult to accept by all aspects of society, especially in recent years with the development of social economy, various underground pipelines are densely covered, underground resources are very tight, and many cities have no pipes to dig and bury new pipes.

Using traditional repair technology to repair old pipelines, under special conditions such as many leaks and complex underground pipelines, the construction is difficult, and it is difficult to completely restore the production efficiency of the original pipelines, which cannot fundamentally solve the problem

Images