Extraction borehole plugging device capable of preventing gas leakage

A plugging device and drainage drilling technology, which is applied in safety devices, mining equipment, earthwork drilling and mining, etc., can solve problems such as air leakage and injection pipe blockage, and achieve the effect of preventing blockage and increasing sealing

Inactive Publication Date: 2021-07-20
GUIZHOU UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide a drainage drilling plugging device that can prevent air leakage, so as to solve the problems of air leakage caused by cement voids and blockage of injection pipes in the above-mentioned background technology

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  • Extraction borehole plugging device capable of preventing gas leakage
  • Extraction borehole plugging device capable of preventing gas leakage
  • Extraction borehole plugging device capable of preventing gas leakage

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Embodiment Construction

[0028] 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 making creative efforts belong to the protection scope of the present invention.

[0029] see Figure 1-5 , the present invention provides a technical solution: a drainage drilling plugging device capable of preventing air leakage, comprising:

[0030] Drilling wall 1 is formed by drilling at a suitable position with a drilling tool, and the front end of drilling wall 1 is provided with a sealing air bag 13 to prevent air leakage;

[0031] Dry cotton yarn section 2, a total of two groups are arranged inside the borehole wall 1, and the ceme...

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Abstract

The invention discloses an extraction borehole plugging device capable of preventing gas leakage. The device comprises dry cotton yarn sections, a pressure measuring pipe and a stirring device; the two dry cotton yarn sections arranged in a borehole wall, and a cement paste hole sealing section is formed between the front and rear dry cotton yarn sections; the pressure measuring pipe is arranged in the borehole wall, and is connected with the dry cotton yarn sections and the cement paste hole sealing section in a penetrating mode; and the stirring device is arranged on the ground outside the borehole wall, and can fully stir and mix cement raw materials to be used for filling. According to the extraction borehole plugging device capable of preventing gas leakage, the novel structural design is adopted, the dry cotton yarn sections are additionally arranged on the front and rear sides of the cement paste hole sealing section, and plugging plates and sealing gas bags are arranged on the outer sides of the dry cotton yarn sections, so that the sealing performance of overall hole sealing is improved, and gas leakage is prevented; and meanwhile, when a grouting pipe is used for grouting, a conveying rolling wheel in a supporting block can drive the grouting pipe to move, so as to prevent the grouting pipe from being blocked by cement paste continuously increased.

Description

technical field [0001] The invention relates to the technical field of coal mine gas drainage, in particular to a drainage drilling plugging device capable of preventing gas leakage. Background technique [0002] Coal mine gas extraction is to drill into coal seams and gas accumulation areas, connect the drill holes to special pipelines, and then use extraction equipment to pump the gas to the ground for utilization. [0003] It is necessary to measure the internal pressure before the extraction. First, drill the hole and put the pressure measuring equipment into the hole to measure the internal pressure. The drill hole is sealed by injecting cement slurry at the front end of the drill hole. A professional checks that the seal is qualified and then installs the pressure gauge, and then the drainage drilling operation will be carried out. The drainage can be used after the pressure gauge shows that the pressure is stable. The equipment extracts the gas. [0004] However, in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/13E21F7/00
CPCE21B33/13E21F7/00
Inventor 王凯汪圣伟李希建张垒杨泽俊姜虎郭正林
Owner GUIZHOU UNIV
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