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Coal mining method and roof management method

A coal mining method and roof technology, which are applied in ground mining, mining equipment, mining equipment, etc., can solve the problems of inability to reduce air leakage heat in goafs, reduce heat dissipation of roof rocks, and poor dust prevention effect, and achieve improved coal mining. The effect of improving output rate, increasing mine output, and increasing cutting speed

Inactive Publication Date: 2018-01-12
HEILONGJIANG UNIV OF TECH
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Problems solved by technology

[0004] To sum up, the problems existing in the existing technology are: in the existing coal mining, the dust prevention effect is poor; , to reduce the heat dissipation of the roof rock; on the other hand, it cannot reduce the heat carried by the air leakage in the goaf

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  • Coal mining method and roof management method
  • Coal mining method and roof management method
  • Coal mining method and roof management method

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0035] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0036] A coal mining method, the coal mining method comprising:

[0037] The working face adopts the comprehensive mechanized coal mining of a single medium-thick coal seam with full-height inclined longwall retreating and all-span falling method; specifically includes:

[0038] S101: Coal cutting by coal shearer;

[0039] S102: transport coal by scraper conveyor;

[0040] S103: Hydraulic support supports the roof;

[0041] S104: push the scraper conveyor;

[0042] The shearer cut...

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Abstract

The invention belongs to the technical field of coal mines and discloses a coal mining method and a roof management method. The coal mining method comprises the steps that comprehensive mechanized coal mining of a single medium-thick coal seam full-seam mining inclined longwall retreating type full caving method is conducted on a working face, specifically, coal is cut through coal mining machines, the coal is transported through a scraper conveyor, a roof is supported through hydraulic supports, and the scraper conveyor is pushed to be moved; the coal mining machines are used for bidirectional coal cutting, rollers automatically rotate to crush the coal through cutting teeth, and unit roller blades and a coal shoveling plate of the conveyor are used for automatically loading the coal intothe scraper conveyor; inclined cutting feed is conducted on the ends of the two sides to cut the triangular coal; and in the production process, coal mining is conducted according to the sequence ofcoal cutting, support moving and scraper conveyor pushing. The problem that the dust proof effect is poor in coal mining is solved.

Description

technical field [0001] The invention belongs to the technical field of coal mines, and in particular relates to a coal mining method and a roof management method. Background technique [0002] Coal mine dust is one of the five major disasters in mines. The underground dust mainly comes from coal mining, tunneling, transportation and other operating places. 70% to 80% of the dust in mechanized coal mining mines is produced by the mining face. In recent years, with the continuous improvement of the degree of mechanized excavation in coal mines, especially the extensive application of fully mechanized excavators in roadway excavation, due to the large section of machine-excavated roadways (up to 20-25m 2 ), the production is highly concentrated, and the dust generated has an increasing impact on the working environment of the working face, and the dust concentration can reach 300-1000mg / m 3 , seriously endangering the health of workers. At present, my country's machine-excav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/18E21F5/04E21F15/00E21F1/00E21F17/103
Inventor 宋欣荣河海屈年华王丽敏王爱卿
Owner HEILONGJIANG UNIV OF TECH
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