Oxygen-free outburst-prevention green and efficient tunneling technology suitable for gas-outburst coal road

Abstract

The invention provides an oxygen-free outburst-prevention green and efficient tunneling technology suitable for a gas-outburst coal road and belongs to the technical field of mining safety. The oxygen-free outburst-prevention green and efficient tunneling technology mainly relates to the outburst predicting and forecasting technique, an intrinsic-safety tunneling device, an intrinsic-safety transportation device, a noxious gas monitoring system, a dynamic variable-frequency gas drainage system, the inert gas blocking technique, and the accident emergency rescue technique. By the adoption of the oxygen-free outburst-prevention green and efficient tunneling technology suitable for the gas-outburst coal road, harm caused by coal and gas outburst accidents can be effectively controlled and eliminated, safe and efficient tunneling is achieved, asphyxia, fires and explosion caused by gas can be effectively avoided, the situation that people are injured by coal and rock flow can be prevented, life safety of personnel and equipment safety are guaranteed, gas emission is reduced, and environmental friendliness is achieved; meanwhile, production efficiency is improved, production cost is reduced, and economic benefit of enterprises are increased.

Description

technical field [0001] The invention relates to the technical field of mining safety, in particular to an oxygen-free, outburst-resistant, green, safe and efficient tunneling technology for outburst coal roadways. Background technique [0002] Coal is the most important primary energy in my country, accounting for more than 70% of the total primary energy consumption in China. With the continuous and rapid growth of my country's economy, the demand for coal will also maintain rapid growth. The gas content of coal seams in my country is generally high. According to statistics, more than 50% of the mines in the country are high-gas mines, and 44% of them are outburst mines. [0003] At present, when excavating coal roadways with outburst risks, the "four-in-one" local outburst prevention measures must be taken. Although it has a positive effect on preventing local coal and gas outbursts to a certain extent, it increases the cost of excavation and reduces production. efficienc...

AI Technical Summary

Problems solved by technology

However, looking at the coal roadway tunneling technology in different high gas and outburst mining areas at home and abroad, the intrinsic safety of tunneling has not yet been achieved. A small number of mines use IoT sensor technology to realize unmanned tunneling face, but the application effect is not good. The main reason is that some refined excavation processes cannot be completed well, such as temporary support, installation of bolts, etc., and the use and maintenance costs are high; most mines still follow the traditional excavation process, which is not only costly and inefficient, but also Coal and gas outburst accidents continue to occur, causing a large number of casualties and economic losses

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