Underground coal mine drilling water draining and gas spraying prevention device and installation method thereof

Abstract

Disclosed are an underground coal mine drilling water draining and gas spraying prevention device and an installation method thereof. Water and gas hole spraying problems in the underground coal minedrilling exploring water draining and pressure relief process can be solved. The underground coal mine drilling water draining and gas spraying prevention device mainly comprises a hole opening support and sealing structure, a first separation assembly and a second separation assembly, and the work sequences of the first separation assembly and the second separation assembly are parallel. The holeopening support and sealing structure comprises a hole protection pipe, a sealing sleeve, a hemispheric gas collection hood and a wind barrel. The first separation assembly comprises a water drainingdevice. A fluid inlet of the water draining device communicates with the part, exposed from the hemispheric gas collection hood, of the barrel body of the wind barrel. The water draining device communicates with a water drain pipe and an exhaust pipe. The second separation assembly comprises a separation box. An upper barrel opening of the wind barrel is connected with a fluid inlet of the separation box. The separation box communicates with the exhaust pipe and the water draining pipe. The underground coal mine drilling water draining and gas spraying prevention device is simple in overall structure, good in spraying prevention effect, convenient to install and disassemble and low in cost and has wide practicability.

Description

technical field [0001] The invention relates to an underground coal mine dredging borehole water and gas blowout prevention device and an installation method thereof, especially suitable for water and gas blowout prevention and drainage during coal mine underground dredging borehole water exploration and pressure relief. Background technique [0002] Coal is the main energy source in our country, and the development and utilization of coal plays an important role in the development of the national economy. Safe mining is the primary issue of coal mining and utilization. According to records, 60% of coal mines in my country are affected by floor pressure water damage to varying degrees. Therefore, floor water damage is an important risk factor for coal mining safety in my country. During the process of water exploration and pressure relief in coal mine underground dredging drilling, the stress of the orifice changes under the dynamic disturbance of the drill pipe and the comp...

AI Technical Summary

Problems solved by technology

Ordinary blowout prevention devices are simple in structure and function. At present, there are many types of devices for small, single water or gas spraying, but it is not common to prevent water and gas spraying at the same time. The blowout prevention device when the gas is ejected at the same time is of great significance to ensure the safe production of mines

Solve the problems that once a large amount of water and gas are sprayed from the hole at the same time, the ordinary blowout preventer will have insufficient buffer space and cannot realize the separation and drainage of water and gas.

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