Repair method for short pipe replacement
A repair method and short-pipe technology, which can be used in water supply installations, sewer systems, waterway systems, etc., to solve problems such as ground subsidence, danger to workers in wells, and displacement of new pipelines.
Pending Publication Date: 2022-03-29
上海辉拓市政工程有限公司
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Problems solved by technology
[0003] However, in the existing broken pipe method, during the construction process, due to the need to excavate the ground, it is easy to cause ground subsidence, causing danger to the staff in the well, and the pipeline repair company needs to excavate some depressions to insert the extension cord lock or Support rods, for severely displaced original pipes, new pipes will also cause severe displacement
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[0024] see figure 1 , the present invention provides a technical solution: a short tube replacement repair method, comprising the following steps:
[0025] Step 1: First place a surface displacement monitor and a GNSS deformation monitor on the ground to monitor the current ground, and then excavate the ground. When the wellhead leaks out, use a threaded drilling machine around the wellhead to check the circumference of the wellhead. Drill the hole, and then insert the concrete fixing block into the hole. A hanging ring is poured on the top of the concrete block, and an extension rope is hung inside the hanging ring. A hinge is installed at the end of the concrete block near the wellhead, and a Z-shaped support is connected to the hinge. The personnel who go down the well wear waterproof suits and oxygen respirators, send the air bag into the upstream pipeline, inflate the air pump, completely isolate the water source, install the reamer sewage pump, pump the water to the down...
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The invention relates to the technical field of pipeline repair, and discloses a repair method for short pipe replacement, which comprises the following steps: step 1, firstly, placing a ground surface displacement monitor and a GNSS deformation monitor on the ground, monitoring the current ground, then excavating the ground, and when a wellhead is exposed, carrying out surface displacement monitoring on the ground and carrying out GNSS deformation monitoring on the ground; and drilling the periphery of the well mouth by using a thread drilling machine at the periphery of the well mouth. The 3D camera is adopted to shoot the overall shape of the pipeline, data are transmitted to an external computer, 3D modeling of the pipeline is carried out, when the pipeline obtained through 3D modeling shows serious displacement of the pipeline, a mold matched with the displacement pipeline is manufactured through pouring in advance according to displacement pipeline data obtained through 3D modeling, and prefabrication of a connecting pipeline is carried out; the displacement degree matched with the displacement pipeline is prefabricated, and the situation that after a normal pipeline is connected with the displacement pipeline, the pipeline generates displacement, the interior is twisted and damaged, and the outer wall is damaged due to friction can be avoided.
Description
technical field [0001] The invention relates to the technical field of pipeline repair, in particular to a short pipe replacement repair method. Background technique [0002] In the process of pipeline repair, the broken pipe method can be divided into two processes according to the power: the static pulling (cracking) pipe method and the pneumatic pipe pressing method. Compared with the excavation method, the broken pipe method in the pipeline repair method has the advantages of fast construction speed, High efficiency, price advantage, more conducive to the environment, less interference to the road surface and other advantages. Compared with other pipeline repair methods, the advantage of the broken pipe method is that it is an engineering construction method that can replace the original pipeline with a pipeline that exceeds the diameter of the original pipeline, thereby increasing the flow of the pipeline. The broken pipe method is very suitable for pipe replacement wi...
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IPC IPC(8): E03F3/06
CPCE03F3/06E03F2003/065Y02W30/30
Inventor 张亚林
Owner 上海辉拓市政工程有限公司