Method for repairing underground pipeline without digging
A technology of underground pipelines and repair methods, which is applied to pipe components, pipes/pipe joints/fittings, mechanical equipment, etc., can solve problems such as poor hardening of lining materials, jointed pipe mouths, and untreated pipe mouths, etc., to achieve Good social and economic benefits, low noise, and resource-saving effects
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Embodiment 1
[0034] Non-excavation repair of underground pipelines of industrial sewage pipes in a section of Shanghai.
[0035] First of all, after the interpretation and evaluation of the image data of the underground pipeline through CCTV video inspection, it is found that the interior of the pipeline has been severely corroded, and the corrosion of the pipeline has a tendency to be more serious. The load capacity of the pipeline itself is reduced, and the vibration of the road vehicle will cause the pipeline to rupture. , and then cause the road surface to subside and collapse, which needs to be repaired in time.
[0036] Due to the heavy traffic on this section of the road, if large-scale excavation is used for repairs, the traffic will be seriously affected. Moreover, the construction period is long, the construction noise is large, and there is a lot of construction waste, which also has a great impact on the factory production and the surrounding environment.
[0037] Therefore, t...
Embodiment 2
[0051] In embodiment 1, add following operation:
[0052] After cutting at the position where the lining material nozzle of the new inner lining pipe (4) stretches out 5-6cm, adopt quick cement to make a 45 degree chamfer between the inner lining material and the inspection well wall. As a result, the nozzle part of the lining pipe material after construction is kept smooth, and can be integrated with the well wall of the inspection well. This can achieve the purpose of anti-leakage and protection of the mouth of the nozzle.
Embodiment 3
[0054] In embodiment 2, adding following operation:
[0055] When the thermosetting resin hose is hardened and formed, a layer of high-strength lining new pipe is formed in the old pipe. At the same time, the water pressure 3.0m above the ground is used to make the inner liner pipe expand and stick to the old pipe. inner wall.
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