Coal mining method with three steps

A technology of three coal and mining methods, applied in underground mining, surface mining, earthwork drilling and other directions, to achieve the effect of less investment and improved recovery rate

Inactive Publication Date: 2008-11-12
闫振东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, there is no mature, high-efficiency and high-return technology for coal mining in buildings, railways, highways, and water bodies (hereinafter referred to as "three-down") coal mining in my country, but the recoverable reserves of coal in various types of coal mines in China are huge. Being able to mine will improve economic and social benefits

Method used

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  • Coal mining method with three steps
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Embodiment Construction

[0017] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0018] A three-under coal mining method, which is characterized by network mining, permanent support and integrated construction of three-under coal strips. The network mining, permanent support and integrated construction are:

[0019] (1), network mining: in the setting of three lower coal bodies, roofing and bottom mining houses 5 to 6 meters wide, leaving 10 to 20 meters of pillars, the houses and pillars form a network; as shown in Figure 1, work Schematic diagram of surface mining;

[0020] (2) Permanent support: timely and permanent support should be carried out for the mined house. The density of permanent support should be large, the deformation of the roof and the two sides should be small, and the three upper floors should not sink.

[0021] (3) Integrated construction: It is to use drilling, blasting, coal loading, and coal transportation tech...

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Abstract

The invention relates a mining method of coals stored under waters, buildings or railways, which is characterized in that network mining, permanent support and integrated construction are carried out to coal strips and blocks stored under the waters, the buildings orthe railways; the network mining includes that a room, five to six meters wide from the bottom to the top is mined in a coal mine under the waters, the buildings or the railways, 10 to 20m posts are left and the room and the posts form network shape; the permanent support includes that the mined room is treated with the permanent support in time, and the permanent support has large intensity to guarantee that the deformation of the top plate and the two sides is comparatively small and ground above the waters, or of the buildings or the railways does not sink; the integrated construction includes that the technologies of hole drilling, explosion, coal loading and transport are adopted and equipment with integrated support is used for carrying out construction to the mined room. The mining method of the invention has the advantages that resource recovery rate is improved, investment is low and return rate is high; and not only an underground treatment space is provided for the recrements of a mine well, but also filling materials are provided for the mining under the waters, the buildings or the railways, thereby realizing the advantages of safe production, etc.

Description

Technical field [0001] The invention belongs to coal mining technology, and particularly relates to three coal mining suitable for buildings, railways and highways, and under water bodies. Background technique [0002] At present, there are no mature, high-efficiency and high-return technologies for coal mining in my country’s buildings, railways, roads, and water bodies (hereinafter referred to as "three under"). However, the recoverable reserves of three under pressure in various coal mines in my country are huge. Being able to mine will improve economic and social benefits. Summary of the invention [0003] The purpose of the present invention is to provide a triple coal mining technology for buildings, railways and highways, and under water bodies, aiming at the deficiencies of existing coal mining technologies. [0004] In order to achieve the above objective, the technical solution of the present invention is: [0005] A three-under coal mining method, which is characteriz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/16E21C25/66E21F13/00
Inventor 闫振东
Owner 闫振东
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