A prefabricated steel ring construction method applied to rapid repair of pressure pipelines
A technology for pressure pipes and construction methods, which is applied to sewer pipe systems, pipe components, waterway systems, etc., can solve problems such as development constraints of sewage pressure pipes, and achieve the effects of improving repair efficiency, ensuring structural stability, and shortening construction periods.
Active Publication Date: 2021-11-05
POWERCHINA HUADONG ENG COPORATION LTD
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Problems solved by technology
The implementation of these technologies often requires the help of existing inspection wells, so their development in the repair of sewage penstock defects is restricted
Method used
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Embodiment Construction
[0037] The present invention is described in further detail with reference to the accompanying drawings and specific embodiments.
[0038] refer to figure 1 , Carry out small-scale local excavation near the leakage point of the pressure pipeline, which can avoid as much as possible traffic arteries, difficult traffic relief or difficult excavation. figure 1 Middle: Mark 1 is a brick wall, marks 2 and 3 are pipe opening 1 and opening 2, pipe opening 1 is the main opening, pipe opening 2 is the auxiliary opening or pipe opening 1 is the auxiliary opening, and pipe opening 2 is the main opening.
[0039] refer to figure 2 , to open the pressure pipeline, the main opening size is 1.2 m × 0.8 m, mainly used for pumping and dredging in the pipeline after opening; the auxiliary opening size is 0.6 m, in order to facilitate gas detection and dredging during construction. In order to ensure good ventilation conditions, two openings need to be made at the same time, and a blower is i...
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The invention relates to the technical field of defect repair of sewage pressure pipelines, in particular to a prefabricated steel ring construction method applied to the quick repair of pressure pipelines. The present invention repairs the defects of the sewage pressure pipeline by combining partial excavation and pipeline non-excavation repair technology, which effectively avoids the impact of "opening the belly" type excavation on urban traffic, surrounding environment and residents' life, and has comprehensive costs. low cost, short construction period, and high social benefits; the present invention adopts a prefabricated folded steel ring, pulls the steel ring into the defect position of the pipeline to be repaired, and uses a jack to jack up the steel ring, so that the original folded steel ring is rapidly expanded into a circle It is ring-shaped, avoids welding in the pipeline, and the construction is quick, which improves the repair efficiency of defects in the sewage pipe; the invention adopts the clamp to realize the butt joint between the steel rings, which can not only ensure the structural stability of the inner steel ring, but also has rubber The water stop ring provides good anti-seepage performance.
Description
technical field [0001] The invention relates to the technical field of defect repair of sewage pressure pipelines, in particular to a prefabricated steel ring construction method applied to the quick repair of pressure pipelines. Background technique [0002] In recent years, more and more drainage pipes in my country are close to their service life, and there are serious leakage, corrosion, silting and other diseases. Some pipes are damaged by geological drilling, and accidents such as pipe bursts and ground subsidence occur frequently. The urban underground pipe network— —The "underground lifeline" is extremely fragile. However, in the face of the city's busy traffic, intricate underground pipelines and the construction of surrounding structures (buildings), the traditional "zipper" excavation and renovation method is difficult to implement, low in efficiency and has a great social impact. Pipeline trenchless repair technology was first applied in the UK in the 1870s and g...
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IPC IPC(8): F16L55/16F16L55/163F16L55/18E03F3/06
CPCE03F3/06E03F2003/065F16L55/16F16L55/163F16L55/18
Inventor 杨明轩杨晓娟叶盛华余浩项立新
Owner POWERCHINA HUADONG ENG COPORATION LTD