Novel grouting and hole sealing device and process
A hole sealing device and grouting technology, which is applied in the directions of safety devices, sealing/blocking, gas discharge, etc., can solve problems such as poor sealing of gas extraction holes, failure to reach the sealing depth, and damage to the sealing bag. To achieve the effect of improving the gas extraction rate
Inactive Publication Date: 2021-03-23
HENAN POLYTECHNIC UNIV
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Problems solved by technology
However, this sealing method often fails to achieve the ideal sealing depth because it is difficult to plug into the cavity when inserting the gas drainage hole, and even the sealing bag is damaged, and there is a gap between the two sealing bags. There is air in the cracks, and the cracks and even the gas drainage holes are not tightly sealed due to air pressure during grouting
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[0016] The technical implementation of the negative pressure water saturation device will be further described below in conjunction with the accompanying drawings in the present invention.
[0017] refer to figure 1 with figure 2 , The grouting and sealing device includes a sealing bag protective case 1, a sealing bag 2, a gas extraction pipe 3, a protective case cover 1-3, a quick connection device 4, an air pipe 5, a grouting pipe 6, and a grouting hole 7. First pressure regulating valve 8, gas extraction system 9, mixer 10, grouting pump 11, pressure gauge 12, second pressure regulating valve 13, three-way valve 14, vacuum pump 15. The sealing bag 2 is placed in the sealing bag protective shell 1 and sealed by the protective shell cover 1-3; the gas drainage pipe 3, the ventilation pipe 5, and the grouting pipe 6 pass through the sealing bag protective shell 1, the gas extraction pipe 3 is connected to the gas extraction system 9, the vent pipe 5 in the unsealed borehole...
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The invention discloses a grouting and hole sealing device and process. The grouting and hole sealing device and process comprises a breather pipe, an extraction pipe, a grouting pipe, a hole sealingbag, a hole sealing bag protection shell, a pressure gauge, a quick connecting device, a three-way valve, a first pressure regulating valve, a second pressure regulating valve, a vacuum pump and a grouting pump. Compared with the prior art, the grouting and hole sealing device and process provided by the invention has the beneficial effects that the hole sealing bag protection shell in a special shape is used for protecting the hole sealing bag, and the situation that a gas extraction pipeline is difficult to plug in due to abrasion and breakage of the hole sealing bag and blockage of a gas extraction hole by coal particles in the process of plugging in the gas extraction hole is prevented; during hole sealing, negative pressure grouting is performed through the vacuum pump and the nearbygas extraction hole which is not sealed; the gas extraction hole and a nearby fissure zone can be favorably filled with grout; and the optimal hole sealing effect is achieved, so that the gas extraction rate is increased.
Description
technical field [0001] The invention relates to the field of geotechnical engineering and grouting engineering equipment, in particular to a grouting hole sealing device and process. Background technique [0002] Grouting and sealing technology is often used in the field of mines, especially in gas drainage, grouting and sealing is a key technical link. At present, double-sealing bag grouting and sealing is one of the most commonly used methods. This conventional sealing method The grout is pressed into the double-sealing bag and drilled with a grout pump to seal the hole. However, this sealing method often fails to achieve the ideal sealing depth because it is difficult to plug into the cavity when inserting the gas drainage hole, and even the sealing bag is damaged, and there is a gap between the two sealing bags. There is air in the cracks, and the cracks and even the gas drainage holes are not tightly sealed due to air pressure during grouting. Contents of the inventi...
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IPC IPC(8): E21B33/14E21F7/00
CPCE21B33/14E21F7/00
Inventor 亢昊庆高保彬马树俊
Owner HENAN POLYTECHNIC UNIV