A water-rich evaluation method of coal seam roof sandstone based on an improved gray extension correlation method

A coal seam roof, water-rich technology, applied in the direction of instruments, data processing applications, resources, etc., can solve the problems of fuzzy clustering, gray correlation, lack of convincing, etc., to achieve the effect of convenient operation, reliable and reasonable prediction results, and easy to understand

Inactive Publication Date: 2018-12-18
ANHUI UNIV OF SCI & TECH
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Problems solved by technology

There are fuzzy clustering, gray correlation, etc. methods for analyzing r

Method used

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  • A water-rich evaluation method of coal seam roof sandstone based on an improved gray extension correlation method
  • A water-rich evaluation method of coal seam roof sandstone based on an improved gray extension correlation method
  • A water-rich evaluation method of coal seam roof sandstone based on an improved gray extension correlation method

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Embodiment Construction

[0011] specific implementation plan

[0012] Such as figure 1 As shown, the method steps include:

[0013] Step A, selection of evaluation factors and classification of water-richness;

[0014] Step B, establishing an evaluation model based on the improved gray extension correlation method;

[0015] Step C, evaluation results and verification.

[0016] The following is a detailed description of the case:

[0017] Step A, selection of evaluation factors and classification of water abundance.

[0018] Taking the data of 63 drill holes that exposed the roof of 10 coal seams in Suntuan Mine as an example, the aquifer thickness c 1 , brittle-plastic thickness ratio c 2 , core recovery rate c 3 , fault fractal dimension c 4 Four factors are used as evaluation factors. See Table 1 for details.

[0019] Table 1 Classification index of water-richness of 10 coal roofs

[0020]

[0021] Step B, establishing an evaluation model based on the improved gray extension correlatio...

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Abstract

The invention discloses a water-rich evaluation method of coal seam roof sandstone based on an improved gray extension correlation method, which comprises the following steps: selection of evaluationfactors and classification of water-rich grade; establishment of the evaluation model based on the improved grey extension correlation method; result evaluation and verification. The water-rich evaluation method of coal seam roof sandstone based on an improved gray extension correlation method has the advantages that the factors affecting the water-rich property of roof sandstone are selected bygrey relational analysis, and based on the extension theory, the shortcomings of the evaluation factors subjectively selected are overcome; a model is established for evaluation through a quantitativeand qualitative method, the prediction result is reliable and reasonable; the method has certain novelty, and the method is easy to understand and convenient to operate, and provides a new method andidea for evaluating the rich water content of the roof sandstone.

Description

technical field [0001] The invention herein relates to the field of water-rich property evaluation of coal seam roof sandstone, in particular to a method for evaluating water-rich property of coal seam roof sandstone based on an improved gray extension correlation method. Background technique [0002] In addition to the height of the water-conducting fissure zone under the influence of mining, the influence of roof water inrush is also related to the characteristics of the aquifer itself, the occurrence conditions and the structure of the coal seam roof water-resisting layer. Predicting the water-richness of the coal seam roof aquifer in advance can effectively reduce the occurrence of roof water inrush accidents and seek the most economical mining plan. There are fuzzy clustering, gray correlation, etc. methods for analyzing roof water-rich zoning, but they are not convincing enough in the evaluation results. Extenics theory comprehensively considers the above-mentioned pr...

Claims

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Application Information

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IPC IPC(8): G06Q10/06
CPCG06Q10/06393
Inventor 张妹饶家健刘启蒙夏磊
Owner ANHUI UNIV OF SCI & TECH
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