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Dust removal method and device for ground horizontal well of coal mine roadway driving face

A technology for excavating working face and coal mine roadway, which is applied in the directions of safety devices, dust prevention, mining equipment, etc., can solve problems such as reducing coal mining efficiency and the impact of underground roadway space

Active Publication Date: 2021-05-07
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above problems, the present invention proposes a dust removal method and device for ground horizontal wells in coal mine roadway excavation working face, which solves the problems that existing dust removal methods and devices need to work underground, are easily affected by the space of underground roadways, and reduce coal mining efficiency.

Method used

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  • Dust removal method and device for ground horizontal well of coal mine roadway driving face
  • Dust removal method and device for ground horizontal well of coal mine roadway driving face
  • Dust removal method and device for ground horizontal well of coal mine roadway driving face

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Embodiment

[0066] Taking the tunneling of a coal mine as the background, see Figure 2-Figure 4 , the excavation object is the coal seam with good coal structure, which can construct the ground horizontal well along the coal seam. The roadway has a rectangular section, 3m wide and 2.6m high, and the length of the roadway is 1000m. The excavation process mainly solves problems such as dust and noise, and the specific implementation steps are as follows:

[0067] Step 1: Design a surface horizontal well 1 along the opposite direction of the roadway 6 to be excavated in combination with the size of the roadway section (see figure 2 ), the horizontal section 11 is 1.3-1.8m away from the roadway side in the width direction of the roadway excavation working face, and 1.5-2.55m away from the roadway bottom in the height direction, the length of the horizontal section 11 is 995m, and the horizontal section 11 does not drill through the roadway 6 The starting end 61 of the roadway is completed ...

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Abstract

The invention discloses a dust removal method and device for a ground horizontal well of a coal mine roadway driving face. The method comprises the steps that firstly, the ground horizontal well is reversely designed along a to-be-driven roadway; secondly, directional drilling of the ground horizontal well is conducted on a coal seam, and an easily-cut hole protection screen pipe is put into a horizontal section of the ground horizontal well and provided with holes; thirdly, water is injected into the ground horizontal well from the ground in a pressurized mode, and the water is injected into the coal seam through the holes of the hole protection screen pipe; and finally, coal mine roadway driving face driving is conducted, and when the driving face reaches the tail end of the horizontal section, a dust removal system arranged on the ground is started to pump and discharge dust generated by the driving face. According to the dust removal method and device for the ground horizontal well of the coal mine roadway driving face, the problems that the dust causes safety production of the driving face and worsens the working environment are solved, power noise is reduced, the construction efficiency of the driving face is improved, the health of underground constructors is protected, and the requirements for comprehensive dust prevention, safety, economy, energy conservation and environmental protection of the driving face are met.

Description

technical field [0001] The invention belongs to the technical field of dust prevention in coal mines, and in particular relates to a method and a device for removing dust from horizontal wells on the surface of coal mine roadway excavation working faces. Background technique [0002] As the degree of mechanization of coal mines is significantly improved, the amount of dust generated during underground mining operations has also increased sharply, seriously threatening the safety of coal mine production and the health of operators. Coal mining and rock cutting are most likely to cause excessive dust concentration in front of the roadheader. At present, the pressure fan is mainly used to connect the air cylinder to the forward circuit to ventilate and remove dust. At the same time, the water curtain is used to reduce dust at the back of the roadway excavation face. . [0003] In addition, there are also some technologies that use negative pressure drainage to remove dust, su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F5/02E21F5/20
CPCE21F5/02E21F5/20
Inventor 王海军张群姜在炳范耀舒建生程斌庞涛贾立龙赵龙
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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