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Method for judging floor water inrush risk degree of deep well

A judging method and technology of risk degree, which is applied in the field of judging the degree of water inrush risk of deep well floor, can solve the problems of waste of resources, high cost, complicated operation procedures, etc., and achieve the effect of improving safety

Active Publication Date: 2016-11-09
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] (1) The theory of "lower three zones" and "lower four zones" under mining conditions are consistent with the actual situation of mine floor aquifer damage. However, due to the high cost of on-site measurement, complicated operating procedures, Difficult and therefore not widely used in the field
[0005] (2) "Water inrush coefficient method" has always been a method for evaluating water inrush from the coal seam floor in my country because of its simple physical concept and convenient calculation. However, this method only considers the two influencing factors of the water pressure of the aquifer and the total thickness of the floor aquitard , which fails to reflect the non-linear dynamic phenomenon that the coal seam floor water inrush is controlled by multiple factors and has a very complex mechanism
[0006] The coal seam floor water inrush evaluation methods based on fuzzy mathematics, gray relational degree, neural network and other theories or cross-theories are mostly based on a single operation, and there is no floor water inrush risk case library, and the existing water inrush cases cannot be combined. use, waste of resources

Method used

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  • Method for judging floor water inrush risk degree of deep well
  • Method for judging floor water inrush risk degree of deep well
  • Method for judging floor water inrush risk degree of deep well

Examples

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Embodiment 1

[0032] It is used to judge the risk degree of water inrush from deep well floor, such as figure 1 shown, including the following steps:

[0033] Step 1. Collect the data of multiple main controlling factors affecting floor water inrush, including: hydrogeological conditions, water guiding structure status, floor aquitard status, mining status and deep well status;

[0034] Step 2. Calculate and analyze the weight of each factor according to the expert scoring method, and select 4 factors as the evaluation index of the risk degree of the floor water inrush;

[0035] Step 3. Calculate the weight of each factor according to the experts’ scoring. The water pressure of the aquifer is 0.24, the thickness of the aquifer is 0.20, the hydraulic conductivity of the fault is 0.16, the oblique length of the working face is 0.14, the degree of strong water supply is 0.10, the mining depth is 0.09, and the inclination angle of the coal seam is 0.07. The order of importance is as follows: w...

Embodiment 2

[0081] The difference from Example 1 is that in step 5, 9 sample data with obvious risk of floor water inrush are selected in reality, and the sample data of 9 samples with obvious risk of floor water inrush are shown in Table 3, and the subsequent normalization processing The method etc. are similar to Example 1.

[0082] Table 3 Water inrush sample data from bottom plate

[0083]

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Abstract

The invention discloses a method for judging the floor water inrush risk degree of a deep well and belongs to the field of mine safety analysis. A plurality of main controlling factors affecting the floor water inrush are collected firstly, evaluation indexes are weighed and selected according to the main controlling factors, the subordinating degree function of the evaluation indexes is determined, a floor water inrush obvious case is selected by the combination of the practical floor water inrush condition, sample data of the floor water inrush are subjected to normalization processing, cases are classified by an MATLAB program, and a floor water inrush risk degree case data base is constructed; finally the evaluation index data of the to-be-tested floor water inrush risk degree are input to determine the to-be-tested floor water inrush risk class. The method can evaluate the plurality of main controlling factors, and technical support is provided for deep mine exploitation safety.

Description

technical field [0001] The invention belongs to the field of mine safety analysis, and in particular relates to a method for discriminating the risk degree of water inrush on the floor of a deep well. Background technique [0002] Water inrush from the coal seam floor is a relatively complicated process, which is a rock mass instability phenomenon caused by human excavation engineering activities leading to the release of energy in the stress field of the surrounding rock mass of the coal seam, the destruction of the water-resistant rock mass of the coal seam floor, and the sudden change of the local water-filled hydrogeological conditions of the mine. . At present, the safety evaluation methods for water inrush risk degree of deep well floor generally evaluate the risk degree of water inrush from the aspects of mathematical statistics, hydraulics, fuzzy mathematics, gray theory, neural network, etc., but these methods are immature, and most of them use a single It is mainl...

Claims

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Application Information

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IPC IPC(8): G06F17/30G06Q10/06G06Q50/02
CPCG06F16/90G06Q10/0635G06Q50/02
Inventor 刘伟韬孟祥喜申建军赵吉园宋文成李光李强王建宁王东辉张勤范龙张茂鹏穆殿瑞谢祥祥董文程宰慧刘士亮廖尚辉
Owner SHANDONG UNIV OF SCI & TECH
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