Coal mine safety risk cause factor research method

Abstract

The invention discloses a coal mine safety risk cause factor research method, and provides a coal mine safety risk cause factor research method based on an improved CRITIC and DEMATEL-ISM combined model, and the method comprises the steps: S1, collecting influence factors which can cause accidents in a coal mine safety production process, and building a coal mine safety risk index system based on a WSR theory; in the step S2, a CRITIC weighting method is used for carrying out weight calculation on each index factor; in the step S3, the centrality of coal mine safety risk cause factors is calculated by using a DEMATEL method, a coal mine safety risk factor ISM model is established, the influence relationship among the cause factors is indicated, an improved CRITIC weighting method is introduced, a coal mine safety risk cause model is established, and the comprehensive influence degree is calculated.

Description

Technical Field

[0001] The invention belongs to the field of safety causal factor analysis, and in particular relates to a method for studying coal mine safety risk causal factors. Background Art

[0002] The general steps of text mining include data collection, establishing indicator models, establishing risk cause models, and analyzing the impact of indicator factors.

[0003] Studying the impact of coal mine safety risk factors is helpful to prevent accidents; and currently there is relatively little research on the impact of coal mine safety risk causative factors. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned existing methods and provide a method for studying the causal factors of coal mine safety risks.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a method for studying the causal factors of coal mine safety risks, comprising the following steps.

[0006] S1 Establish a coal mine safety risk index system based on WSR theory.

[0007] Collect coal mine related materials.

[0008] S2 establishes a combined model of CRITIC and DEMATEL-ISM.

[0009] Firstly, the DEMATEL method is used to calculate the centrality of the causal factors of coal mine safety risks, and the ISM model of coal mine safety risk factors is established. Then, the improved CRITIC weighting method is introduced to establish the causal model of coal mine safety risks.

[0010] S3 calculates and analyzes the comprehensive impact.

[0011] According to the improved CRITIC method and DEMATEL-ISM method, the weight and centrality of each indicator are obtained respectively to calculate the comprehensive influence of each indicator.

[0012] The beneficial effects of the present invention are as follows: (1) The improved CRITIC method and DEMATEL-ISM method can more effectively identify the causal factors of coal mine safety; (2) The present invention can not only derive the main causal factors but also see the degree of influence between the causal factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The invention is a flow chart of a method for studying the causal factors of safety risks in coal mines.

[0014] Figure 2 The invention discloses a coal mine safety risk index system based on WSR. Implementation

[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0016] Example 1.

[0017] See also Figure 1 .

[0018] The present invention provides a technical solution: a method for studying the causal factors of coal mine safety risks, comprising the following steps: S1. collecting coal mine related materials: establishing a coal mine safety risk index system based on the WSR theory; S2. establishing an improved CRITIC weighting model: using the CRITIC weighting method to calculate the weight of each index; S3. establishing an improved CRITIC and DEMATEL-ISM combination model: establishing a DEMATEL-ISM combination model, and introducing the improved CRITIC weighting method, establishing a coal mine safety risk causal model, and calculating the comprehensive impact.

[0019] The present invention proposes a method for studying the causal factors of coal mine safety risks. The S1 collects the influencing factors that may cause accidents in the coal mine safety production process, and establishes a coal mine safety risk index system based on the WSR theory.

[0020] In this embodiment, preferably, S2 uses the CRITIC weighting method to calculate the weight of each indicator factor.

[0021] Calculate the standard deviation. The standard deviation of each indicator is calculated as follows.

[0022] (1)

[0023] The correlation coefficient between the two indicators was calculated as follows.

[0024] (2)

[0025] The information content of each indicator is calculated as follows.

[0026] (3)

[0027] The calculation formula for the weight of each indicator is as follows.

[0028] (4)

[0029] In this embodiment, preferably, S3 uses the DEMATEL method to calculate the centrality of the causal factors of coal mine safety risks, establishes an ISM model of coal mine safety risk factors, indicates the influence relationship between the causal factors, introduces the improved CRITIC weighting method, establishes a coal mine safety risk causal model, and calculates the comprehensive influence.

[0030] Invite experts to score and establish a relationship matrix.

[0031] Fraction 0 points 1 point 2 points 3 points 4 points significance No impact Small impact General Impact Big impact Serious impact

[0032] Normalize the matrix and calculate the comprehensive influence matrix. The formula is as follows.

[0033] (5)

[0034] Calculate the four degrees: the influence degree is the sum of the elements in each row of T; the influence degree is T The sum of the elements in each column; the centrality is the sum of the influence and the influence; the causal degree is the influence minus the influence.

[0035] Draw a cause-effect diagram with centrality as the horizontal axis and causality as the vertical axis.

[0036] Determine the overall risk impact matrix N , introduce the identity matrix I , the calculation formula is as follows.

[0037] (6)

[0038] Determine the reachability matrix M ,when N ij ≥0.15 M ij is 1, otherwise it is 0.

[0039] Divide the levels. First, through the reachability matrix M Determine the reachable set of each risk indicator i R i ( R i ={i | F ij = 1} ), look-ahead set S i ( S i ={i | F ij =1} ) and the intersection of two sets ( R i ∩S i ),likeR i ∩S i =R i Time display indicator R i Indicator elements in i Can be in S i Find the antecedent in the matrix, and the corresponding risk is the risk at this level. Then remove the row and column from the reachable matrix, and continue the above steps until all rows and columns are crossed out.

[0040] Draw a hierarchical progressive relationship diagram based on the reachability matrix and the process of indicators being crossed out.

[0041] The comprehensive influence of each indicator is calculated based on the improved CRITIC and DEMATEL-ISM combined model. The weight and centrality of each indicator are obtained according to the improved CRITIC method and DEMATEL-ISM method, and the comprehensive influence of each indicator is:

[0042] (7)

[0043] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A method for studying the causal factors of coal mine safety risks, characterized in that Identifying safety risk factors includes the following steps: S1 Collect coal mine related materials: Establish coal mine safety risk indicator system based on WSR theory; S2 Establish an improved CRITIC weighting model: Use the CRITIC weighting method to calculate the weight of each indicator; S3 Establish an improved CRITIC and DEMATEL-ISM combined model: Establish a DEMATEL-ISM combined model, introduce the improved CRITIC weighting method, establish a coal mine safety risk causal model, and calculate the comprehensive impact.

2. A coal mine safety text mining method according to claim 1, characterized in that: The S1 collects the factors that may cause accidents in the process of coal mine safety production, and establishes a coal mine safety risk index system based on the WSR theory.

3. A coal mine safety text mining method according to claim 1, characterized in that: The S2 uses the CRITIC weighting method to calculate the weight of each indicator factor.

4. A coal mine safety text mining method according to claim 1, characterized in that: The S3 uses the DEMATEL method to calculate the centrality of the causal factors of coal mine safety risks, establishes the ISM model of coal mine safety risk factors, shows the influence relationship between the causal factors, introduces the improved CRITIC weighting method, establishes the coal mine safety risk causal model, and calculates the comprehensive influence.

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