Controllable cement backfilling grouting method

A technology of backfilling grouting and cement slurry, which is applied in the direction of earthwork drilling, mining equipment, tunnels, etc. It can solve the problems of waste, too thin water ash, and reduce the cost of tunnel construction or repair, so as to achieve the effect of reducing costs and reducing waste
CN101672181AInactive Publication Date: 2010-03-17重庆市十八土鑫诚灌浆防水工程有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
重庆市十八土鑫诚灌浆防水工程有限公司
Publication Date
2010-03-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a controllable cement backfilling grouting method. The method comprises the following steps: punching a grouting hole with aperture of 4-8 cm in the tunnel or the stratum; accessing a grouting pipe and a screw type grouting device in the grouting hole; preparing pasty cement grout according to the preparation proportion of cement grout materials; and performing low-pressuregrouting by adopting an intermittent grouting method until filling up the grouting hole. Since the cement grout is added with flocculant and prepared into the pasty cement grout, the intermittent grouting is performed by adopting an intersection grouting method and a circulation grouting method, the problem that the cement grout is wasted since the water-cement ratio in the prior grouting methodis excessively small, the corresponding additive is not added, and the intermittent grouting method is not adopted is solved, and the cost for tunnel construction or rehabilitation is reduced.
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Description

technical field

[0001] The invention relates to the technical field of tunnel construction, in particular to a controllable cement backfill grouting method. Background technique

[0002] Tunnels are buildings built underground or underwater and paved with railways for the passage of motor vehicles. During the construction or use of tunnels, due to the different geological conditions of the strata or the influence of external natural conditions, the geology in the tunnels will be affected to varying degrees. The damage, such as cracks, etc., need to repair the tunnel. At present, in the construction of tunnels and tunnel repairs in China, the method of backfilling and grouting is used, that is, backfilling and grouting the gaps, cracks, and loose layers of the tunnel wall. Its function is Improve the stress state of the geology, and prevent the soil around the gap in the tunnel wall from collapsing and causing surface subsidence.

[0003] However, when using backfill groutin...

Claims

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