System for synergistically controlling corner gas by blocking gas wall and magnetized active agent and method

Abstract

The invention discloses a system for synergistically controlling corner gas by blocking a gas wall and a magnetized active agent and a method. The system includes a gas wall assembly and a spray assembly, the gas wall assembly is arranged on a mining channel, the spray assembly is arranged at the position near a corner, and the gas wall assembly is used to block the channel where a working surfaceis located; the spray assembly is used to spray a magnetic surfactant to a corner area; the gas wall assembly includes a gas pipeline, a pressure gauge, airbags, buckles, an inflation valve, a safetyvalve and a pressure relief hole; the inflation valve, the safety valve and the pressure relief hole are all formed in the airbag, each airbag is provided with a buckle ring, and the adjacent airbagsare connected through the buckles and the buckle rings; and the airbags are arranged in a height direction in sequence in a stacking mode. The system requires a small amount of engineering during construction and operation, and can be used without additional building of large-scale equipment. The use process is simplified, and the system is suitable for safe and efficient use by coal mine workers.

Description

technical field [0001] The invention relates to the technical field of coal mine operation in shafts, in particular to a system and method for synergistically controlling corner gas by sealing a gas wall and a magnetizing active agent. Background technique [0002] my country is a country with large coal resources and a large coal consumption country. According to statistics, the total amount of coal resources in my country is 5.57 trillion tons buried below 2000m, accounting for 62% and 69.6% of the primary energy production and consumption structure respectively. Coal will still be the main energy source in my country for a long time. At present, the vast majority of coal production in my country is underground mining. With long-term large-scale development, phenomena such as gas exceeding the limit and coal and gas outbursts have become more frequent. The problem of coal seam gas has become one of the main factors restricting the safe and efficient production of mines in ...

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Problems solved by technology

[0005] The purpose of the present invention is to: aim at the above problems, to provide a system and method for cooperating to control the corner gas by sealing the gas wall and the magnetizing active agent, which solves: 1. In the prior art, the processing amount of gas exceeding the limit in the upper corner is large and the pumping The problem of poor mining effect, small flow rate and low drainage concentration; 2. In the existing technology, the use of ventilation to control the corner gas overrun problem can only dilute the corner gas, which will cause the return air corner gas overrun The impact of the gas source in the goaf is not obvious, and it is likely to cause air leakage in the goaf of the working face, causing the phenomenon of gas exceeding the limit in the return air corner to continue to occur; 3. Most of the existing gas inhibitors are single reagents, which prolong the release of gas The rate effect is poor, the solution consumption is large and the effect of reducing the gas release is not good.

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