Strip-type Wongawilli mining method of coal buried under building

A coal mining method and strip-type technology, which is applied in underground mining, surface mining, earth drilling and mining, etc., can solve the problems of poor ventilation conditions, poor long-term stability of coal pillars, and frequent moving times in Wangerville coal mining, etc. Achieve the effects of overcoming frequent moving times, improving the recovery rate of coal resources, improving the recovery rate and mining efficiency of coal resources

Inactive Publication Date: 2012-07-18
HENAN POLYTECHNIC UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of high-efficiency coal mining method of strip-type Wangerville coal mining under the building (structure), which can give full play to the respective advantages of strip mining and Wangerville coal mining met

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  • Strip-type Wongawilli mining method of coal buried under building
  • Strip-type Wongawilli mining method of coal buried under building
  • Strip-type Wongawilli mining method of coal buried under building

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Embodiment Construction

[0020] The invention provides a strip-type Wangerville coal mining method under a building. In the coal mining method, the coal mining area under the building is firstly arranged in a strip-type layout planning working face layout, and then the Wangerville continuous coal mining method is adopted. In the coal mining method, the short-wall mining is carried out in the mining tunnel with an angle of 40-60° between one side or both sides of the strip branch roadway and the branch roadway. The present invention provides the following four working face layout methods, the schematic block diagram of the layout is shown in Figure 1 to Figure 4 .

[0021] Such as figure 1 As shown, the arrangement of the working face provided by the present invention can be a single-lane single-wing type, that is, the branch road is arranged in a single road, and one side of the branch road is arranged with a mining tunnel at an angle of 40 to 60° with the branch road for short-wall mining. The wid...

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Abstract

The invention discloses a strip-type Wongawilli mining method of coal buried under a building, which includes the steps that the coal mining area under the building adopts a strip type overall arrangement manner to plan the working face, and then a Wongawilli continuous mining method is adopted to conduct short wall backstopping at the mining fields which are located at one side or two sides of a strip type hole drift and angle at 40-60 degrees with the hole drift. The technique provided by the invention can give full play to the respective advantages of strip mining and Wongawilli mining and overcomes the disadvantages of frequent shifting of the working face, low mining efficiency of the strip mining method and the disadvantages of poor aeration condition and poor longtime stability of the coal pillars of the Wongawilli mining method. The method disclosed by the invention realizes efficient recovery of the coal buried under buildings, railways, and water bodies.

Description

technical field [0001] The invention relates to a high-efficiency Wangerville coal mining method for pressing coal under a building and belongs to the technical field of coal mining. Background technique [0002] The research on coal mining under buildings (structures) at home and abroad belongs to the research field of "three under" coal mining. Foreign countries such as Poland and the United Kingdom began to use the strip method to mine coal pressed under buildings in the 1950s, and gained rich practical experience. Both strip mining and Wangerville coal mining method have been studied at home and abroad. Foreign countries such as Poland and the United Kingdom began to use the strip method to mine coal pressed under buildings in the 1950s, and gained rich practical experience. my country has successively carried out strip mining practice in more than 10 provinces and hundreds of working faces in the country, and has obtained rich research results and observation data. T...

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Application Information

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IPC IPC(8): E21C41/16
Inventor 郭文兵赵东旭黄广帅马晓川陈冰
Owner HENAN POLYTECHNIC UNIV
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