Large-mining-height fully mechanized coal mining face multi-stage multi-dimensional atomization dust prevention and control method and device

Abstract

The invention belongs to the technical field of coal mine dust prevention and control, and discloses a large-mining-height fully mechanized coal mining face multi-stage multi-dimensional atomization dust prevention and control method and device. In the large-mining-height fully mechanized coal mining face multi-stage multi-dimensional atomization dust prevention and control device, a roller is fixed to a coal mining machine rocker arm, and the coal mining machine rocker arm is connected with a coal mining machine body; the coal mining machine body is provided with a coal mining machine body upper end face and a coal mining machine body cambered surface, and wet-type hydrodynamic dust removers are arranged on the left end face and the right end face of the upper end face of the coal mining machine body; and the coal mining machine rocker arm, the upper end face of the coal mining machine body and the arc face of the coal mining machine body are all provided with composite nozzle sprayers. According to the large-mining-height fully mechanized coal mining face multi-stage multi-dimensional atomization dust prevention and control method and device, a composite nozzle sprayer group and the wet-type hydrodynamic dust removers are arranged in a coal mining machine area, so that the coal mining machine is inhibited from moving to manned working spaces such as a frame front space and a sidewalk; and by arranging the composite nozzle sprayers, formed fog drops capture dust generated by cutting of the roller, dust generated by cutting collapse and floating dust raised by rotation of the roller can be effectively captured, and the dust is prevented from escaping to a working face space.

Description

technical field [0001] The invention belongs to the technical field of coal mine dust prevention and control, and in particular relates to a multi-level and multi-dimensional atomized dust prevention method and device for a fully mechanized mining face with a large mining height. Background technique [0002] At present, my country is a country that is "relatively rich in coal, short of oil, and low in gas". At this stage, it has basically formed an energy structure pattern with coal as the body, electricity as the center, and oil, gas, and new energy in an all-round way. In recent years, with the continuous increase of coal mining intensity and the improvement of the mechanization, automation and intelligence of the mining process, the problems of natural disasters in mines have become more and more prominent, especially the dust pollution problem in the underground operation site. Without any dust prevention measures, the dust concentration in the fully mechanized mining f...

AI Technical Summary

Problems solved by technology

Without any dust prevention measures, the dust concentration in the fully mechanized mining face can reach 2500-3000mg / m3. The high concentration of dust will not only cause occupational diseases, but also cause mine dust explosion accidents, seriously affecting the safety and efficiency of the mine. mining

[0003] Aiming at the hazards of high-concentration dust in fully mechanized mining working faces, the main prevention and control measures adopted include coal seam water injection, ventilation and dust removal, spray dust suppression, wet dust collection, personal protection, and physical and chemical dust suppression. Dust produced by coal machine cutting and hydraulic support action can easily spread to the entire working space with the wind. The above dust prevention measures can only reduce the dust concentration of fully mechanized mining work to a certain extent. The problem of high concentration dust pollution in fully mechanized mining face still serious

[0004] Through the above analysis, the existing problems and defects of the existing technology are: the existing dust prevention measures can only reduce the dust concentration of the fully mechanized mining work to a certain extent, and the problem of high concentration dust pollution in the fully mechanized mining face is still very serious

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