Replacement Method of Underground Pipeline by Cracking and Plugging Method

Abstract

The invention relates to a method for replacing an underground pipeline through a cracking and inserting method. A thrust device is arranged in a starting point replacing construction well. A traction device is arranged in an ending point replacing construction well. A traction expansion pipe head of the traction device is extruded into a construction pipe section linearly from a construction pipe section pipeline opening in the starting point replacing construction well to break old pipes in regions where the traction expansion pipe head passes through; the thrust device pushes short pipes arranged behind the expansion pipe head to be in pressure contact with the expansion pipe head and move synchronously; and a plurality of short pipes are pushed in sequence to enter the pipeline and be connected with the short pipes in front of the corresponding plurality of short pipes in an inserting manner till a new pipe formed by mutual inserting and connecting of the short pipes is formed in the pipeline between the two construction wells. The underground pipeline can be efficiently and rapidly replaced on the basis that the ground above the pipeline is not excavated, and construction is safe and reliable.

Description

technical field [0001] The invention relates to a method for replacing underground pipelines by a splitting method, which is mainly suitable for the construction of drainage, rainwater, sewage, reclaimed water and other pipelines, and is especially suitable for the repairing project of drainage pipelines with a diameter of less than 600mm. Background technique [0002] Underground pipe network is an important part of urban infrastructure. With the rapid development of urban construction, municipal drainage, sewage, rainwater, reclaimed water, etc. continue to circulate. The construction of underground pipe network is increasing and expanding year by year. Drainage pipes are seriously aging and damaged, and they are overloaded, often causing problems such as blockage, leakage, and pipe breakage. Urban drainage pipes have the following characteristics: most urban drainage pipes are located within the range of urban roads and alleys, and the roads are crowded and narrow; the un...

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Problems solved by technology

The limitations of the above conditions have made it difficult to use traditional excavation construction methods for the repair of urban drainage pipes.

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