Method for preventing and treating large-mining-high caving coal dust

A technology of large mining height and coal falling, which is used in earth-moving drilling, slitting machinery, non-rotational vibration suppression, etc.

Pending Publication Date: 2020-05-19
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The method of the present invention is a special prevention and control method designed for the characteristics of the collapsed coal and the source of the collapsed coal dust based on actual production. Prevention program

Method used

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  • Method for preventing and treating large-mining-high caving coal dust
  • Method for preventing and treating large-mining-high caving coal dust
  • Method for preventing and treating large-mining-high caving coal dust

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Embodiment Construction

[0023] In order to enable those skilled in the art to better understand the present invention, the present invention will be further clearly and completely described below in conjunction with reference to the accompanying drawings and in conjunction with embodiments. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0024] Such as Figure 1 to Figure 5 As shown, a method for preventing and controlling coal dust falling from large mining heights is based on a shearer 1, on which a spray module 2 and a cantilever spray bar 3 are set, and a PC central controller 4, a water distributor 6, and a pressure reducing valve are equipped. 21. Air-water distributor 8, spray pump 5, air storage tank 7 and dust sensor 9; wherein, spray module 2 is connected to water distributor 6, water distributor 6 is connected to spray pump 5, cantilever spray rod 3 is connected to air-wat...

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Abstract

The invention discloses a method for preventing and treating large-mining-high caving coal dust. The method specifically comprises the following steps that spraying modules are installed at the lowerend of a left side plate of a machine body of a coal mining machine and the lower end of a right side plate of the machine body of the coal mining machine, the spraying direction of the spraying modules is horizontal flat spraying, and the effective range of the spraying modules penetrates through the caving coal dust to reach the most front end of a caving area; and cantilever spraying rods areinstalled at the two sides of the front end of the machine body of the coal mining machine, and the spraying direction of the cantilever spraying rods is toward the coal wall. According to the method,based on the basic idea of solving the coal dust problem from a dust-generating source, according to the aerodynamic principle, a sprayed water mist body covers a caving dust source to form a turbulent flow in a free turbulent flow and a heterogeneous fluid, so that the caving coal dust is basically not capable of forming diffusion migration, and effective collision, interception and settling arecarried out on the caving coal dust in the "germination" state, so that the caving coal dust collecting efficiency is improved, the capacity of collecting the inhalable coal dust below 10 um is particularly improved, and the dust falling efficiency is reached by 85% or above.

Description

technical field [0001] The invention relates to the technical field of coal mine production, in particular to a method for preventing and controlling coal dust that is easy to operate on site, reliable and stable, in particular to a method for preventing and controlling coal dust falling at a large mining height of an underground coal mining machine with full height at one time. Background technique [0002] With the improvement of coal mining mechanization, the coal mining technology of thick coal seams with full height at one time is widely used. However, due to the gas drainage, when the shearer drum cuts the top coal, it will cause serious damage to 1-2 hydraulic supports. The coal body collapses, and the area of ​​the coal body collapses is very large. The scope of the collapse area: the width is about 2.3m (the distance from the coal retaining plate of the shearer to the coal wall), and the length is about 5.2m (the width of 1-2 hydraulic supports + mining Coal machine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C35/22F16F15/04
CPCE21C35/22F16F15/04
Inventor 赵振保苏士龙郝永江姜小强张友才高海海庞杰文郭凡勇李文刚付玉平卢俊平卫国华司健卫佳琪余海彬李志杰孙建民武振琦叶剑春冯国平
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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