Anti-impaction air bag type sealing method capable of achieving remote automatic control for coal mine tunnel in disastrous environment

Abstract

The invention discloses an anti-impaction air bag type sealing method capable of achieving remote automatic control for a coal mine tunnel in a disastrous environment. A device used by the method comprises an air bag, fixers and a PLC which can be controlled remotely. The air bag adopts a polyimide film composite high-strength glass fiber waving cloth as a sealing material, and the length, the width and the height of the cloth are 10m, 3m, and 2.5m correspondingly; the fixers are connected with the upper end of the air big through fixing bands, and connected with electric wires, and the air bag is connected with an air pump through an air inlet pipe, and connected with a water pump through a water inlet pipe; the air pump is connected with a nitrogen source through an air suction pipe, and electromagnetic valves are mounted on the air inlet pipe, the water inlet pipe and the air suction pipe correspondingly; and a gas pressure sensor is mounted on one side of the air bag, a safety valve is mounted on the other side of the air bag, and a water level sensor and a water drainage valve are mounted at the lower end of the air bag. The anti-impaction air bag type sealing method can achieve remote automatic control in the overall process of achieving rapid sealing of the coal mine tunnel, workers do not need to conduct operating on site, and the anti-impaction air bag type sealing method has the advantages of being short in sealing forming time, high in efficiency, low in air leakage ratio and the like.

Description

technical field [0001] The invention relates to the technical field of coal mine roadway sealing, in particular to an impact-resistant airbag-type sealing method for remote automatic control of coal mine roadways in catastrophic environments. Background technique [0002] Dangers such as fire, coal dust, rock burst and gas explosion are common disasters in mines. Once they occur, the disaster area will expand rapidly and affect a large range, directly threatening the life safety of mines and underground workers. To prevent the expansion of disasters and reduce losses To ensure the life safety of rescuers, it is necessary to quickly and effectively establish an airtight separation wall to isolate areas prone to spontaneous combustion, harmful gas sources or gas accumulation areas. At present, there are fast sealing technologies such as fly ash filling rapid sealing, spraying polyurethane foam plugging type sealing, airbag type rapid sealing using high-pressure gas cylinders a...

AI Technical Summary

Problems solved by technology

At present, there are fast sealing technologies such as fly ash filling rapid sealing, spraying polyurethane foam plugging type sealing, airbag type rapid sealing using high-pressure gas cylinders as the gas source, parachute type rapid sealing, rapid colloidal explosion-proof airtight wall and other rapid airtight technologies. Due to the long time of airtight formation and high air leakage rate, manual on-site operations are required during the airtight construction process, and there is a risk of explosion in airtight high-gas fire areas, which cannot guarantee the safety of workers

Images