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

Inactive 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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Problems solved by technology

[0004] In view of this, the present invention provides a controllable cement backfill grouting method to solve the waste problem caused by reasons such as too thin water-cement ratio, no addition of corresponding admixtures, and no intermittent grouting in the existing grouting method, reducing the cost of tunnel construction or repair

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  • Controllable cement backfilling grouting method

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Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0021] The embodiment of the present invention discloses a controllable cement backfill grouting method, the process is as follows figure 1 The following steps are shown:

[0022] Step 101: Drill grouting holes with a diameter of 4-8 cm in the tunnel or formation.

[0023] The arrangement of the grouting holes is generally plum blossom holes, and the distance between the holes is between 2m and 5m.

[0024] Step 102: Connect the conduit and screw type grouting eq...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00
Inventor 杜天刚
Owner 重庆市十八土鑫诚灌浆防水工程有限公司
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