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Method for distinguishing ultra-close coal seam/group

A discrimination method and extremely short-distance technology, applied in the field of discrimination, can solve the problems of no unified determination standard

Inactive Publication Date: 2013-08-28
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

[0005] In recent years, coal seams with small interlayer distances have been collectively referred to as "extremely close-distance coal seams" in various mining areas, but there is no uniform determination standard, and accurate determination of the height of water-conducting fracture zones is crucial to safe mining under water bodies

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  • Method for distinguishing ultra-close coal seam/group
  • Method for distinguishing ultra-close coal seam/group

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Embodiment Construction

[0029] Below in conjunction with certain ore 12,14 coal seams and 16,17 coal seams are specific embodiments the present invention is described in detail, but the present invention is not limited to following example:

[0030] Calculation method of the present invention comprises the following steps:

[0031] (1) According to the actual survey of the mine, the geological data of the relevant coal seams are obtained, including the thickness of the coal seam (mining), the lithology characteristics of the roof and the vertical distance between the coal seams;

[0032] According to the data, the maximum mining thickness of 12, 14, 16 and 17 coal seams are respectively M 12 =2.1m, M 14 = 1.3m, M 16 = 1.2m, M 17 = 1.7m, the roof lithology of each coal seam is moderately hard, and the vertical distance between coal seams 12 and 14 is h 12-14 =1.8m, the vertical distance between 16 and 17 coal seams h 16-17 =2.4m;

[0033] (2) According to the relevant coal seam parameters obtain...

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Abstract

The invention discloses a method for distinguishing an ultra-close coal seam / group. The method includes the steps of obtaining geographic information of related coal seams according to mine practical surveys; taking a lower coal seam as a single coal seam according to obtained parameters of the related coal seams and calculating the heights of caving zones of the coal seams according to formulas provided by related rules; choosing different calculation methods of comprehensive mining thicknesses according to ratios; according to the comprehensive mining thicknesses obtained through calculation, choosing an appropriate calculation formula of water conducted zone heights in combination with practical geographic conditions of a mine, and therefore calculating the water conducted zone heights of two coal seams. The method provides applicable conditions of the calculation formula of the water conducted zone heights of the ultra-close coal seam when the height of the caving zone of the lower coal seam enters a mining range of an upper coal seam, reflects the quantitative relation of the mining thickness of the upper coal seam, the mining thickness of the lower coal seam and vertical distances of the coal seams, and provides bases and reference for choices of calculation methods of the ultra-close coal seam and the water conducted zone of the ultra-close coal seam.

Description

technical field [0001] The invention relates to a discrimination method, in particular to a very close distance coal seam / group discrimination method. Background technique [0002] my country is a large coal-producing country in the world and one of the countries with the most complex hydrogeological conditions. In my country, rivers, lakes and other water bodies cover a large amount of coal resources. How to exploit these resources safely is an urgent problem to be solved by coal mines and related research institutes. [0003] The height of the water-conducting fracture zone is an important parameter that must be calculated when conducting research on the safe mining of coal seams under water bodies. The accuracy of the calculation results is crucial to the safety of coal seam mining under water bodies. Coal mining under water bodies must first ensure the safety of coal mining, correctly evaluate and analyze the safety of coal mining under water bodies, and realize safe co...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V9/00
Inventor 张文泉张广鹏张贵彬李伟盛园园孙培聪
Owner SHANDONG UNIV OF SCI & TECH
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