Personal protective device used for coal mine downhole excavation working face

Abstract

The invention discloses a personal protective device used for a coal mine downhole excavation working face. The personal protective device comprises a cabinet, the front side of the cabinet is provided with a cabinet door, the rear side of the cabinet is provided with a fixed ring, and the cabinet door is provided with a plurality of ultrasonic sensors; the inner wall of the cabinet door is provided with a touch display screen, the bottom of the touch display screen is provided with a PLC, and an explosion-proof telephone is arranged on one side of the PLC; and the cabinet is internally provided with a seat, and the bottom of the seat is provided with a storage bin, a vent pipe is arranged on one side of the top of the seat, a breathing pipeline is arranged on the other side of the top ofthe seat, and the vent pipe is provided with an exhaust valve. By storing the personal protective device at the coal mine downhole excavation face, it is ensured that workers working in the excavationworking face escape to the interior of the device within a short period of time, meanwhile, the device can move along with advancing of the excavation working face, and the personal protective devicecan protect the risk-escaping personnel from being impacted, squeezed and buried by a protruded coal seam, and provides compressed air, drinking water and food to the risk-escaping personnel.

Description

technical field [0001] The invention relates to the field of underground excavation work in coal mines, in particular to a personal protection device used for the underground excavation working face of coal mines. Background technique [0002] Coal and gas outburst is a special gas gushing phenomenon, that is, under the action of pressure, the broken coal and gas are suddenly ejected in large quantities from the coal body to the mining space. Coal and gas outburst is a powerful natural disaster in coal mine underground production. Because coal and gas outburst can eject a huge amount of coal and gas flow into the excavation face space in an instant, it not only seriously destroys roadway facilities, but also damages the ventilation system. Moreover, the wells and lanes in the nearby area are all filled with gas and coal powder, causing gas suffocation or coal flow burying people, and even serious consequences such as coal dust and gas explosion. It seriously threatens the s...

AI Technical Summary

Problems solved by technology

Coal and gas outburst is a powerful natural disaster caused by coal mine underground production. Because coal and gas outburst can spray a huge amount of coal and gas flow to the mining face space in an instant, it not only seriously destroys the roadway facilities, but also destroys the ventilation system. Moreover, all the wells and lanes in the nearby area are filled with gas and coal powder, causing gas suffocation or coal flow to bury people, and even serious consequences such as coal dust and gas explosions.

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