Ultra-high pressure long arm coal mass water injection hole sealing equipment and using method thereof

Abstract

The invention discloses ultra-high pressure long arm coal mass water injection hole sealing equipment and a using method thereof. According to the ultra-high pressure long arm coal mass water injection hole sealing equipment and the using method thereof, a coal mass long arm water injection hole can be sealed rapidly, and water is injected into a coal mass. The hole sealing equipment comprises a grouting pump, a hole sealing material pressure-injection pipe and a hole sealing pipe. The depth of inserting of the hole sealing pipe into a water injection drilled hole is a. The grouting pump is connected with the hole sealing pipe through the hole sealing material pressure-injection pipe. The depth of inserting of a water injection pipeline into the water injection drilled hole is b, and b is larger than a. The tail end of the water injection pipeline is wrapped with an inner cotton plug. The parts, at a hole opening of the water injection drilled hole, of the hole sealing pipe and the water injection pipeline are wrapped with outer cotton plugs. A cavity between the outer cotton plugs and the inner cotton plug serves as a hole sealing cavity. By adopting the process method, the water enters into the coal mass to release part of gas, so that the gas content of the coal mass is decreased effectively; and after the effect of water injection is achieved, the amount of dust can be decreased by 80% or above, the operation environment of a worker is improved, a dust explosion accident is eradicated, the coal mass is moistened, the cost is reduced, and the security of the worker is increased.

Description

technical field [0001] The invention relates to a coal body water injection hole sealing technology, in particular to a technology capable of sealing the coal body water injection hole when performing advanced high-pressure dynamic pressure water injection for dust control in coal mines from the source. Background technique [0002] Coal mine dust refers to all kinds of rock and mineral particles produced in the process of coal mine production and construction, and its main source is mining operations. Dust not only seriously threatens the physical and mental health of employees, but even causes pneumoconiosis. A large amount of coal dust and gas will be produced during coal mining operations, which not only has hidden dangers of explosion, but also seriously endangers the health of mining operators. Coal mining personnel have become a high-risk group of pneumoconiosis in my country, and the excavation working face is the most important Dust source. [0003] In recent years...

AI Technical Summary

Problems solved by technology

During high-pressure filling, the rubber outer tube is elastically deformed, and the connection between it and the steel tube is prone to rupture, resulting in damage to the occluder and increased operating costs

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