Underground grouting and water-plugging process

A grouting and process technology, applied in wellbore lining, underground chamber, shaft equipment, etc., can solve the problems affecting grouting quality, small amount of grouting, large amount of grouting, etc., so as to ensure the quality of grouting and reduce the amount of grouting. , the effect of controlling the diffusion range

Inactive Publication Date: 2012-07-04
SANSHANDAO GOLD MINE SHANDONG GOLD MINING LAIZHOU
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Problems solved by technology

[0014] In the above process, the fourth step is to inject cement or cement-sodium silicate double liquid slurry, and use a single liquid cement pump (BW-250 type, with a large amount of slurry, which can reach 250 liters/min) for single liquid cement When pouring grout, when the water gushing structure exposed by drilling has good connectivity and a large space, single-liquid cement grout is used, and the grouting volume is large, sometimes reaching hundreds of tons, which leads to high labor intensity for workers and makes it difficult

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  • Underground grouting and water-plugging process

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[0030] The present invention will be further described below in conjunction with the accompanying drawings of the description.

[0031] see figure 2 with image 3 , the downhole grouting water plugging technique of the present invention, comprises the following steps:

[0032] The first step: grouting hole drilling

[0033] When it is predicted that there will be water in front of the construction roadway, the drilling rig is used to drill or drill the grouting hole, and at the same time, the orifice pipe for grouting is installed to prepare for the grouting and water blocking operation after water gushing. After the borehole is drilled into the water guide or water storage structure, water gushing occurs. When the water gushing volume is greater than a certain value (generally 10m 3 / h), grouting and water blocking operations are required.

[0034] The second step: water pressure and hole washing after drilling water gushing.

[0035] After water gushing occurs in the b...

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Abstract

The invention relates to a new process for underground grouting and water-plugging. The underground grouting and water-plugging process can effectively ensure the diffusion radius and the diffusion range of serous fluid, and reduce the using amount of cement and the labor intensity of a worker by simultaneously grouting single and bi-liquid, and the underground grouting and water-plugging process comprises the following steps of: (1) drilling a grouting hole; (2) pressing water and washing the hole after water burst from the drilled hole; (3) manufacturing the serous fluid; (4) performing grouting and water-plugging operation; and (5) drilling the grouting hole, wherein collaborative injection of single-liquid cement grout and bi-liquid cement-water glass grout is adopted in the grouting and water-plugging operation in the step (4).

Description

technical field [0001] The invention relates to a new technique for downhole grouting and water plugging. Background technique [0002] As we all know, water inrush is a major hazard faced by underground mining mines. In addition to the prevention and control of groundwater by dredging the groundwater of the mine deposit, mines generally use pre-grouting to seal the structural fissure water in front of the roadway, especially in the roadway. This method is generally used in the process of project development to ensure mine safety, combined with figure 1 , the traditional grouting process is as follows: [0003] The first step: grouting hole drilling [0004] When it is predicted that there will be water in front of the construction roadway, the drilling rig is used to drill or drill the grouting hole, and at the same time, the orifice pipe for grouting is installed to prepare for the grouting and water blocking operation after water gushing. After the borehole is drilled ...

Claims

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Application Information

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IPC IPC(8): E21D11/38E21D11/04E21D11/10
Inventor 修国林王善飞齐兆军李威曲伟勋陆敬义
Owner SANSHANDAO GOLD MINE SHANDONG GOLD MINING LAIZHOU
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