Grouting slurry and underground pipeline grouting method
An underground pipeline and grouting technology, which is applied in the field of grouting slurry and underground pipeline grouting, can solve the problems of high pipeline cost, great impact on the production and life of surrounding residents, and long cycle, so as to prolong the service life, eliminate uneven settlement, The effect of strong compressive strength and impermeability
Pending Publication Date: 2022-04-12
HEBEI CONSTR & INVESTIGATION RES INST
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Problems solved by technology
Since the supporting facilities around the pipeline have already been perfected, the cost of re-excavating or building a new pipeline is high and the cycle is long, which has a great impact on the surrounding structures (buildings), traffic and the production and life of surrounding residents.
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Embodiment
[0041] Embodiment A kind of grouting slurry and underground pipeline grouting method
[0042] This embodiment is a sewage pipeline plugging project numbered WS42-WS43, which is located on the north and south sides of K2+594 Middle Bridge, Yingxu Road, Zhengding New District, Shijiazhuang City, Hebei Province, both crossing the river.
[0043] WS42-WS43 sewage pipeline is located on the north side of K2+594 middle bridge, the distance between the two wells is 60m, the diameter of the pipeline is DN800, the pipeline is reinforced concrete pipe, and socket connection. At the sewage inspection well, the buried depth of the pipeline is about 9m. In the river section, the buried depth of the pipeline is about 3m. About 3m to the south of the pipeline is the rainwater square ditch 5, and about 2.5m to the north is the gas pipeline 4.
[0044] The sewage pipeline in this section crosses the river, the water level in the pipe is high, the pressure is high, and the sewage seeps into t...
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The invention provides grouting slurry and an underground pipeline grouting method, and belongs to the technical field of pipeline leaking stoppage. The grouting slurry comprises cement paste and a polyurethane grouting material; the polyurethane grouting material is prepared from the following raw materials: toluene isocyanate and trihydroxy water-soluble polyether; the underground pipeline grouting method sequentially comprises the steps of manhole dewatering, hole site lofting, hole drilling, grouting slurry injection and hole sealing. The grouting slurry is good in stability when not meeting water, when the grouting slurry is poured to a water leakage part, the grouting slurry immediately reacts with water, meanwhile, carbon dioxide gas is released, the grouting slurry expands and secondarily permeates and diffuses into concrete gaps, a cross-linking reaction is continuously carried out, the viscosity of a product obtained through the cross-linking reaction is increased, a net-shaped structure is formed, and the grouting effect is improved. And finally, a consolidated substance which is large in volume, high in strength and insoluble in water is formed, so that a concrete structure is formed in soil and cracks into which the grouting slurry permeates, and the effect of leaking stoppage of the cracks of the underground pipeline can be achieved.
Description
technical field [0001] The invention relates to a grouting material for an underground pipeline, in particular to a grouting slurry and an underground pipeline grouting method. Background technique [0002] In the urban pipe network, there are often cases of pipe damage, cracking, and settlement leading to leakage. For this situation, the general treatment method is to replace the pipe with large excavation, or to build a new pipe by pulling and jacking the pipe. Since the supporting facilities around the pipeline have already been perfected, the cost of re-excavating or building a new pipeline is high and the cycle is long, which has a great impact on the surrounding structures (buildings), traffic and the production and life of surrounding residents. Contents of the invention [0003] In view of the above problems, the present invention provides a grouting slurry and an underground pipeline grouting method. [0004] To achieve the above object, the technical solution ad...
Claims
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IPC IPC(8): E03F3/06E02D15/00E03F5/02E03F5/04E02D19/10E02D3/12C08G18/48C04B28/00
Inventor 李华伟狄艳林商卫东吴立春周进发史晓楠张全乐刘占伟刘柄辛张富森张海蛟高立康刘冉冉马永波王起明刘志永聂金玲
Owner HEBEI CONSTR & INVESTIGATION RES INST