Coal mine enterprise safety target assessment and evaluation system and method

Abstract

The invention discloses a coal mine enterprise safety target assessment and evaluation system and method. The system comprises a safety target assessment data entry layer, a safety target assessment and evaluation layer and a safety target assessment result application layer. The method comprises the following steps: constructing a coal mine safety target assessment and evaluation index system; determining the score standard of each evaluation index, and calculating the score of each evaluation index; calculating the subjective weight of the index by using an AHP method, calculating the objective weight of the index by using an entropy weight method, and calculating the comprehensive weight of the index; and finally, according to the comprehensive weight of each index determined by the AHP and entropy weight method comprehensive right determination method, calculating the closeness degree of the evaluation index and the idealized target by using a TOPSIS method, and obtaining a safety target assessment result of each department of the coal mine. According to the method, coal mine safety target management improvement measures can be formulated in a targeted manner, and a theoretical basis is provided for effective prevention, timely control and elimination of coal mine potential safety hazards.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine safety management and relates to a safety target assessment and evaluation system and method for a coal mine enterprise. Background Art

[0002] Coal is my country's main energy source and an important industrial raw material. The coal industry is also an important energy pillar industry in my country. However, the geological environment of my country's coal resources is complex and the geological structure is developed, making mining difficult and various disasters frequent. This results in a wide variety of potential accident hazards in the entire coal mine production process and numerous safety production management elements.

[0003] In order to effectively improve the level of coal mine production safety management and reduce the occurrence of coal mine production safety accidents, coal mine enterprises have established safety management systems in accordance with national laws, regulations and standards, and further continuously improved their own safety management level through safety target assessment. However, in the implementation process of existing coal mine enterprise safety target assessment, the assessment is generally based solely on subjective experience, lacking scientific assessment index confirmation methods and evaluation methods. Due to the imperfect internal assessment system of coal mine enterprises, coal mine production safety accidents will occur frequently, seriously affecting the overall production efficiency of coal mine enterprises. Summary of the invention

[0004] In order to address the deficiencies of the prior art, the present invention aims to provide a safety target assessment and evaluation system for coal mine enterprises. The present invention can assess and evaluate the safety target management level of various departments in coal mines, can effectively grasp the current status of production safety management, and plays an important role in improving the safety management level of coal mines and avoiding accidents caused by safety management errors. It is also beneficial for coal mine management to grasp the specific weak links in coal mine safety management in advance, and can take targeted measures to continuously improve the safety management level of coal mines, effectively prevent the occurrence of accidents, and reduce accident losses.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A safety target assessment and evaluation system for coal mine enterprises, the system comprising a safety target assessment data entry layer, a safety target assessment and evaluation layer, and a safety target assessment result application layer;

[0007] The safety target assessment data entry layer is used to obtain the problem data of each evaluation indicator through a computer terminal according to the set safety target assessment evaluation indicators, and upload it to the safety target assessment evaluation layer;

[0008] The safety target assessment evaluation layer is used to call the TOPSIS evaluation model of AHP and entropy weight method to generate safety target assessment results of various departments in the coal mine, and transmit the assessment results to the safety target assessment result application layer;

[0009] The safety target assessment result application layer is used to send the safety target assessment evaluation results of each department of the safety target assessment evaluation layer to managers at all levels through computer terminals. Managers at all levels make relevant rectifications based on the evaluation results and upload the relevant rectification results to the safety target assessment result application layer again, thereby forming a closed-loop feedback.

[0010] Furthermore, the safety target assessment and evaluation layer includes a safety target assessment and evaluation indicator setting module, a score calculation module, an AHP and entropy weight method comprehensive right confirmation module, and a TOPSIS evaluation module;

[0011] The safety target assessment and evaluation indicator setting module is used to evaluate the safety of multiple first-level indicators including accident prevention, three violations control, disaster management, risk management, hidden danger management, equipment management, safety training, and safety investment as a whole;

[0012] The score calculation module is used to calculate the scores of the first-level indicators of accident prevention, three violations control, disaster management, risk management, hidden danger management, equipment management, safety training, and safety investment. Each first-level indicator is scored out of 100 points, and the final score is calculated by subtraction method;

[0013] The AHP and entropy weight method comprehensive right confirmation module is used to calculate the comprehensive weights of the primary indicators including accident prevention, three violations control, disaster management, risk management, hidden danger management, equipment management, safety training, and safety investment;

[0014] The TOPSIS evaluation module calculates the degree of proximity between the evaluation index and the idealized target based on the comprehensive weight of each primary index determined by the AHP and entropy weight method comprehensive confirmation module, thereby obtaining the safety target assessment results of each department of the coal mine;

[0015] The data at the safety target assessment data entry layer include the first-level indicators input through the computer terminal: accident prevention, three violations control, disaster management, risk management, hidden danger management, equipment management, safety training, and safety investment, which belong to the second-level indicator occurrence data.

[0016] Furthermore, the safety target assessment and evaluation indicator setting module divides the first-level indicators including accident prevention, three violations control, disaster management, risk management, hidden danger management, equipment management, safety training, and safety investment into multiple levels and multiple branches for management;

[0017] Multi-level includes the first level and the second level; multi-branch, that is, the first level is divided into multiple branches including accident prevention, three violations control, disaster management, risk management, hidden danger management, equipment management, safety training, and safety investment;

[0018] Furthermore, the accident prevention includes no minor or above personal injury accidents, no Level 2 or above non-fatal accidents, no Level 3 non-fatal accidents, and no new occupational cases;

[0019] The three violations control mentioned above includes no serious "three violations", no unsafe behavior and general "three violations";

[0020] The disaster management includes effective prevention and control of major disasters such as water, fire, gas, and rock burst, and 100% implementation of prevention and control measures;

[0021] The risk control mentioned above includes 100% implementation of major risk control plans and 100% implementation of safety and technical measures for risky operations;

[0022] The hidden danger management includes no major accident hidden dangers and timely rectification of problems found in inspections at all levels;

[0023] The equipment management includes timely inspection of equipment and instruments with a 100% qualified rate in use, and complete equipment and facilities for fire fighting in accordance with standards with a 100% intact rate;

[0024] The safety training mentioned above includes 100% employee safety education pass rate, 100% pass rate of inspection and random examination, and safety education and training work carried out in accordance with regulations;

[0025] The safety investment includes the completion of relevant production safety investment and safety technical measures engineering plan work content.

[0026] Furthermore, the score calculation module calculates the scores of the first-level indicators including accident prevention, three-violation control, disaster management, risk management, hidden danger management, equipment management, safety training, and safety investment;

[0027] Among them, the score calculation of the accident prevention project includes the score calculation of no minor injury or above personal injury accidents, no level 2 or above non-fatal accidents, no level 3 non-fatal accidents, and no new occupational cases;

[0028] Scoring calculation for the three violations control items, including no serious "three violations", no unsafe behavior and general "three violations";

[0029] Scoring of disaster management projects, including effective prevention and control of major disasters such as water, fire, gas, and rock burst, and 100% implementation of prevention and control measures;

[0030] Scoring of risk control projects, including 100% implementation of major risk control plans and 100% implementation of safety and technical measures for risky operations;

[0031] Scoring of hidden danger control projects, including the absence of major accident hazards and timely rectification of problems found in inspections at all levels;

[0032] The score calculation of equipment management items includes the score calculation of equipment and instruments being inspected on time and having a 100% qualified rate in use, and fire-fighting equipment and facilities being fully equipped according to standards and having a 100% intact rate;

[0033] Scoring calculation for safety training projects, including 100% passing rate for employee safety education, 100% passing rate for random inspections, and scoring calculation for safety education and training work carried out in accordance with regulations;

[0034] The score calculation for the safety investment project includes the score calculation for completing the relevant production safety investment and safety technical measures engineering plan work content.

[0035] Furthermore, the score calculation formula of the score calculation module for the accident prevention project is:

[0036]

[0037] Among them, Y A Points for accident prevention, to Indicates the number of A1 to A4 occurrences; A1 means no light injury or above personal injury accidents, A2 means no level 2 or above non-fatal accidents, A3 means no level 3 non-fatal accidents, and A4 means no new occupational cases;

[0038] The calculation formula for the score of the three violation control items is:

[0039]

[0040] Among them, Y B Score points for the three violation control projects. to It is the number of occurrences of B1 to B2; B1 means no serious "three violations", B2 means no unsafe behavior and general "three violations";

[0041] The calculation formula for disaster management project scores is:

[0042]

[0043] Among them, Y C Score disaster management projects, is the number of C1 occurrences, where C1 means that major disasters such as water, fire, gas, and rock burst are effectively prevented and controlled, and that the prevention and control measures are 100% implemented;

[0044] The formula for calculating the risk control project score is:

[0045]

[0046] Among them, Y DScore the risk management project. to It is the number of occurrences of D1 to D2; D1 means that the major risk control plan is 100% implemented, and D2 means that the safety and technical measures for risky operations are 100% implemented;

[0047] The calculation formula for hidden danger control project scores is:

[0048]

[0049] Among them, Y E Score points for hidden danger control projects. to The number of occurrences of E1 to E2; E1 means no major accident hazards, and E2 means timely rectification of the problems found in inspections at all levels;

[0050] The equipment management project score calculation formula is:

[0051]

[0052] Among them, Y F Score points for the Equipment Management project, to It is the number of occurrences of F1 to F2; F1 means that the equipment and instruments are inspected on time and the qualified rate in use is 100%; F2 means that the fire-fighting equipment and facilities are fully equipped according to the standards and the intact rate is 100%;.

[0053] The safety training program score calculation formula is:

[0054]

[0055] Among them, Y G Score points for safety training programs, to It is the number of occurrences from G1 to G3; G1 means that the employee safety education pass rate is 100%, G2 means that the inspection and random test pass rate is 100%, and G3 means that safety education and training work is carried out in accordance with regulations;

[0056] The calculation formula for the safety investment project score is:

[0057]

[0058] Among them, Y H Score disaster management projects, It is the number of H1 occurrences; H1 means the completion of relevant production safety input and safety technical measures engineering plan work content.

[0059] Furthermore, the AHP and entropy weight method comprehensive confirmation module calculates the comprehensive weight of the first-level indicators, including the following steps: ① Using the AHP in the mathematical tool to calculate the subjective weight of each first-level indicator; ② According to the score results of each first-level indicator, the entropy value calculation function in the mathematical tool is used to calculate the objective weight of each first-level indicator; ③ Using the comprehensive weight calculation formula, according to the subjective weight and objective weight results of each first-level indicator, the comprehensive weight of each first-level indicator is calculated.

[0060] Furthermore, the AHP and entropy weight method comprehensive right confirmation module uses AHP to calculate the subjective weight of indicators, including the following steps:

[0061] Through scoring by industry experts, the "9-scale method" is used to determine the importance of each indicator factor and construct a judgment matrix A:

[0062]

[0063] In the formula, Indicates the comparison result of the importance of factor i0 and factor j;

[0064] Calculate the sum of each column element M j :

[0065]

[0066] Perform normalization and calculate the normalized matrix N j :

[0067]

[0068] Calculate the subjective weight W of each indicator a :

[0069]

[0070] Where: j∈[1,n], n is the number of evaluation indicators; the entropy weight method is used to calculate the objective weight of the indicator, including the following steps:

[0071] For the scoring matrix A = (a ij ) m×n After standardization, we get (p ij ) m×n :

[0072]

[0073] Where: p ij represents the feature weight of the i-th expert under the j-th indicator; i∈[1,m], j∈[1,n], m is the number of experts;

[0074] Calculate the entropy value e of each indicatorj :

[0075]

[0076] Calculate the objective weight Z of each indicator j :

[0077]

[0078] The comprehensive weight value Y of each indicator when calculating the comprehensive weight of the indicator j , the calculation formula is:

[0079]

[0080] Furthermore, the TOPSIS evaluation module calculates the degree of proximity between the evaluation index and the idealized target, including the following steps:

[0081] (1) Construct a weighted normalization matrix:

[0082] When calculating benefit-based indicators:

[0083]

[0084] When calculating cost indicators:

[0085]

[0086] Where: r ij is the original data; is the standardized data; min(r ij ) and max(r ij ) are the minimum and maximum values ​​of each evaluation factor; is the weighted standard value of the jth index in the i-th sample; R* represents the final weighted standardization matrix;

[0087] (2) Determine the positive / negative ideal solution of the evaluation factor:

[0088]

[0089] Where: V - is the negative ideal of the evaluation index; V + is the positive ideal of the evaluation index; β1 is a cost-type index, that is, a set of negatively correlated indicators; β2 is a benefit-type index, that is, a set of positively correlated indicators;

[0090] (3) Use Euclidean distance to calculate the distance between the evaluation object and the positive and negative ideal solutions respectively:

[0091]

[0092] Where: is the distance from the i-th sample to the negative ideal; is the distance from the i-th sample to the positive ideal; is the value of the jth index in the set of negative ideal solutions; is the value of the jth index in the set of positive ideal solutions; Y cj is the weight value of each evaluation index;

[0093] (4) Calculate the relative closeness F between each evaluation object and the positive ideal solution i :

[0094]

[0095] (5) Relative closeness F i ∈[0,1], the safety target assessment results of coal mine enterprises are divided into five categories, namely, excellent: 0.9≤F i ≤1; Good: 0.8≤F i <0.9; Medium: 0.7≤F i <0.8; pass 0.6≤F i <0.7; Failure i <0.6.

[0096] Correspondingly, the present invention also proposes a method for evaluating the safety target of a coal mine enterprise based on the above-mentioned system for evaluating the safety target of a coal mine enterprise, and the method specifically comprises the following steps:

[0097] S1. Construct a coal mine safety target assessment and evaluation index system;

[0098] S2. Determine the scoring criteria for each evaluation indicator and calculate the score for each evaluation indicator;

[0099] S3. Use the AHP method to calculate the subjective weight of the indicators, use the entropy weight method to calculate the objective weight of the indicators, and calculate the comprehensive weight of the indicators;

[0100] S4. Based on the comprehensive weight of each indicator determined by the AHP and entropy weight method, the TOPSIS method is used to calculate the degree of proximity between the evaluation index and the idealized target, and the safety target assessment results of each department in the coal mine are obtained.

[0101] The present invention has the following beneficial effects:

[0102] Aiming at the problems that there are many and complex influencing factors of coal mine safety management and safety target assessment lacks scientific and reasonable indicator confirmation method and quantitative evaluation method, the present invention constructs a coal mine safety assessment evaluation index system according to national standards and specifications; the TOPSIS evaluation method with comprehensive weighting of AHP and entropy weight method is adopted, which can not only overcome the shortcomings brought by a single weighting method, but also make the evaluation results more objective and comprehensive to reflect the coal mine safety target assessment results and safety management level, make up for the lack of more scientific and quantitative evaluation methods in coal mine safety target assessment, and is conducive to coal mine managers to truly grasp the actual level of coal mine safety management and the specific weak links, and take targeted measures to timely improve the coal mine safety management level and effectively prevent accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0103] Figure 1 A schematic diagram of the process flow of the coal mine enterprise safety assessment and evaluation method provided by the present invention;

[0104] Figure 2 A flowchart of the improved TOPSIS method based on AHP and entropy weight method for comprehensive right confirmation provided by the present invention;

[0105] Figure 3 This is the architecture diagram of the coal mine enterprise safety target assessment and evaluation system of the present invention. DETAILED DESCRIPTION

[0106] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not intended to limit the scope of use of the present invention.

[0107] like Figure 1-3 As shown, the present invention proposes a safety target assessment and evaluation system for coal mine enterprises, which includes a safety target assessment data entry layer, a safety target assessment and evaluation layer, and a safety target assessment result application layer;

[0108] The safety target assessment data entry layer is used to obtain the problem data of each evaluation indicator through a computer terminal according to the set safety target assessment evaluation indicators, and upload it to the safety target assessment evaluation layer.

[0109] The data at the safety target assessment data entry layer include the first-level indicators input through the computer terminal: accident prevention, three violations control, disaster management, risk management, hidden danger management, equipment management, safety training, and safety investment, which belong to the second-level indicator occurrence data.

[0110] The safety target assessment and evaluation layer is used to call the TOPSIS evaluation model of AHP and entropy weight method for comprehensive right confirmation, generate the safety target assessment results of various departments in the coal mine, and transmit the assessment results to the safety target assessment result application layer.

[0111] The safety target assessment result application layer is used to send the safety target assessment evaluation results of each department in the safety target assessment evaluation layer to managers at all levels through computer terminals. Managers at all levels make relevant rectifications based on the evaluation results and upload the relevant rectification results to the safety target assessment result application layer again, thus forming a closed-loop feedback.

[0112] Among them, the safety target assessment and evaluation layer includes the safety target assessment and evaluation indicator setting module, the score calculation module, the AHP and entropy weight method comprehensive right confirmation module, and the TOPSIS evaluation module;

[0113] The safety target assessment and evaluation indicator setting module is used to evaluate the safety of multiple first-level indicators including accident prevention, three violations control, disaster management, risk management, hidden danger management, equipment management, safety training, and safety investment as a whole;

[0114] The score calculation module is used to calculate the scores of the first-level indicators of accident prevention, three violations control, disaster management, risk management, hidden danger management, equipment management, safety training, and safety investment. Each first-level indicator is scored out of 100 points, and the final score is calculated by subtraction method;

[0115] The safety target assessment and evaluation indicator setting module divides the first-level indicators including accident prevention, three violations control, disaster management, risk management, hidden danger management, equipment management, safety training, and safety investment into multiple levels and branches for management;

[0116] Multiple levels include the first level and the second level; multiple branches, that is, the first level is divided into multiple branches including accident prevention, three violations control, disaster management, risk management, hidden danger management, equipment management, safety training, and safety investment.

[0117] Accident prevention includes no personal injury accidents of minor injuries or above, no non-fatal accidents of level 2 or above, no non-fatal accidents of level 3, and no new occupational cases.

[0118] Among them, the "secondary" and "third level" ratings are divided according to the existing rating standards "Regulations on the Reporting, Investigation and Handling of Production Safety Accidents", and the accidents are divided into four levels: extremely serious accidents, serious accidents, major accidents and general accidents, namely:

[0119] Particularly serious accidents: refers to accidents that cause the death of more than 30 people, or serious injuries to more than 100 people, or direct economic losses of more than 100 million yuan;

[0120] Major accident: refers to an accident that causes the death of more than 10 but less than 30 people, or serious injuries to more than 50 but less than 100 people, or direct economic losses of more than RMB 50 million but less than RMB 100 million;

[0121] Major accident: refers to an accident that causes the death of more than 3 but less than 10 people, or serious injuries to more than 10 but less than 50 people, or direct economic losses of more than 10 million yuan but less than 50 million yuan;

[0122] General accident: refers to an accident that causes the death of less than 3 people, or serious injuries to more than 3 but less than 10 people, or direct economic losses of more than RMB 3 million but less than RMB 10 million.

[0123] The three violations control includes no serious "three violations", no unsafe behaviors and general "three violations".

[0124] The "three violations" specifically refer to: illegal command, illegal operation, and violation of labor discipline, which are common violation terms used by people in this field.

[0125] Disaster management includes effective prevention and control of major disasters such as water, fire, gas, and rock burst, and 100% implementation of prevention and control measures;

[0126] Risk management and control includes 100% implementation of major risk management plans and 100% implementation of safety and technical measures for risky operations;

[0127] Hidden danger management includes no major accident hazards and timely rectification of problems found in inspections at all levels;

[0128] Equipment management includes timely inspection of equipment and instruments with a 100% qualified rate in use, and complete equipment and facilities for fire fighting in accordance with standards with a 100% intact rate;

[0129] Safety training includes 100% employee safety education pass rate, 100% pass rate for random inspections, and safety education and training work carried out in accordance with regulations;

[0130] Safety investment includes completing relevant production safety investment and safety technical measures engineering plan work content.

[0131] The score calculation module calculates the scores of the first-level indicators including accident prevention, three violations control, disaster management, risk management, hidden danger management, equipment management, safety training, and safety investment;

[0132] Among them, the score calculation of the accident prevention project includes the score calculation of no minor injury or above personal injury accidents, no level 2 or above non-fatal accidents, no level 3 non-fatal accidents, and no new occupational cases;

[0133] Scoring calculation for the three violations control items, including no serious "three violations", no unsafe behavior and general "three violations";

[0134] Scoring of disaster management projects, including effective prevention and control of major disasters such as water, fire, gas, and rock burst, and 100% implementation of prevention and control measures;

[0135] Scoring of risk control projects, including 100% implementation of major risk control plans and 100% implementation of safety and technical measures for risky operations;

[0136] Scoring of hidden danger control projects, including the absence of major accident hazards and timely rectification of problems found in inspections at all levels;

[0137] The score calculation of equipment management items includes the score calculation of equipment and instruments being inspected on time and having a 100% qualified rate in use, and fire-fighting equipment and facilities being fully equipped according to standards and having a 100% intact rate;

[0138] Scoring calculation for safety training projects, including 100% passing rate for employee safety education, 100% passing rate for random inspections, and scoring calculation for safety education and training work carried out in accordance with regulations;

[0139] The score calculation of the safety input project includes the score calculation of the completion of the relevant safety production input and safety technical measures engineering plan work content. The specific first-level indicator score calculation standards are shown in Table 1.

[0140] Table 1 Calculation criteria for assessment index scores

[0141]

[0142]

[0143] Among them, the scoring calculation formula for the accident prevention project in the scoring calculation module is:

[0144]

[0145] Among them, Y A Points for accident prevention, to Indicates the number of A1 to A4 occurrences; A1 means no light injury or above personal injury accidents, A2 means no level 2 or above non-fatal accidents, A3 means no level 3 non-fatal accidents, and A4 means no new occupational cases;

[0146] The calculation formula for the score of the three violation control items is:

[0147]

[0148] Among them, Y B Score points for the three violation control projects. to It is the number of occurrences of B1 to B2; B1 means no serious "three violations", B2 means no unsafe behavior and general "three violations";

[0149] The calculation formula for disaster management project scores is:

[0150]

[0151] Among them, Y C Score disaster management projects, is the number of C1 occurrences, where C1 means that major disasters such as water, fire, gas, and rock burst are effectively prevented and controlled, and that the prevention and control measures are 100% implemented;

[0152] The formula for calculating the risk control project score is:

[0153]

[0154] Among them, Y D Score the risk management project. to It is the number of occurrences of D1 to D2; D1 means that the major risk control plan is 100% implemented, and D2 means that the safety and technical measures for risky operations are 100% implemented;

[0155] The calculation formula for hidden danger control project scores is:

[0156]

[0157] Among them, Y E Score points for hidden danger control projects. to The number of occurrences of E1 to E2; E1 means no major accident hazards, and E2 means timely rectification of the problems found in inspections at all levels;

[0158] The equipment management project score calculation formula is:

[0159]

[0160] Among them, Y F Score points for the Equipment Management project, to It is the number of occurrences of F1 to F2; F1 means that the equipment and instruments are inspected on time and the qualified rate in use is 100%; F2 means that the fire-fighting equipment and facilities are fully equipped according to the standards and the intact rate is 100%;.

[0161] The safety training program score calculation formula is:

[0162]

[0163] Among them, Y G Score points for safety training programs, to It is the number of occurrences from G1 to G3; G1 means that the employee safety education pass rate is 100%, G2 means that the inspection and random test pass rate is 100%, and G3 means that safety education and training work is carried out in accordance with regulations;

[0164] The calculation formula for the safety investment project score is:

[0165]

[0166] Among them, Y H Score disaster management projects, It is the number of H1 occurrences; H1 means the completion of relevant production safety input and safety technical measures engineering plan work content.

[0167] The AHP and entropy weight method comprehensive rights confirmation module is used to calculate the comprehensive weights of primary indicators including accident prevention, three violations control, disaster management, risk management, hidden danger management, equipment management, safety training, and safety investment.

[0168] Calculating the comprehensive weight of the first-level indicators includes the following steps: ① Using the AHP in the mathematical tool to calculate the subjective weight of each first-level indicator; ② According to the score results of each first-level indicator, using the entropy calculation function in the mathematical tool to calculate the objective weight of each first-level indicator; ③ Using the comprehensive weight calculation formula, according to the subjective weight and objective weight results of each first-level indicator, calculate the comprehensive weight of each first-level indicator.

[0169] Among them, the use of AHP to calculate the subjective weight of indicators includes the following steps:

[0170] Through scoring by industry experts, the "9-scale method" is used to determine the importance of each indicator factor and construct a judgment matrix A:

[0171]

[0172] In the formula, Indicates the comparison result of the importance of factor i0 and factor j;

[0173] Calculate the sum of each column element M j :

[0174]

[0175] Perform normalization and calculate the normalized matrix N j :

[0176]

[0177] Calculate the subjective weight W of each indicator j :

[0178]

[0179] Where: j∈[1,n], n is the number of evaluation indicators; the entropy weight method is used to calculate the objective weight of the indicator, including the following steps:

[0180] For the scoring matrix A = (a ij ) m×n After standardization, we get (p ij ) m×n :

[0181]

[0182] Where: p ij represents the feature weight of the i-th expert under the j-th indicator; i∈[1,m], j∈[1,n], m is the number of experts;

[0183] Calculate the entropy value e of each indicator j :

[0184]

[0185] Calculate the objective weight Z of each indicator j :

[0186]

[0187] The comprehensive weight value Y of each indicator when calculating the comprehensive weight of the indicator j , the calculation formula is:

[0188]

[0189] The TOPSIS evaluation module calculates the degree of proximity between the evaluation index and the idealized target based on the comprehensive weight of each primary indicator determined by the AHP and entropy weight method comprehensive confirmation module, thereby obtaining the safety target assessment results of each department in the coal mine. Specifically, it includes the following steps:

[0190] (1) Construct a weighted normalization matrix:

[0191] When calculating benefit-based indicators:

[0192]

[0193] When calculating cost indicators:

[0194]

[0195] Where: r ij is the original data; is the standardized data; min(r ij ) and max(r ij) are the minimum and maximum values ​​of each evaluation factor; is the weighted standard value of the jth index in the i-th sample; R* represents the final weighted standardization matrix;

[0196] (2) Determine the positive / negative ideal solution of the evaluation factor:

[0197]

[0198] Where: V - is the negative ideal of the evaluation index; V + is the positive ideal of the evaluation index; β1 is a cost-type index, that is, a set of negatively correlated indicators; β2 is a benefit-type index, that is, a set of positively correlated indicators;

[0199] (3) Use Euclidean distance to calculate the distance between the evaluation object and the positive and negative ideal solutions respectively:

[0200]

[0201] Where: is the distance from the i-th sample to the negative ideal; is the distance from the i-th sample to the positive ideal; is the value of the jth index in the set of negative ideal solutions; is the value of the jth index in the set of positive ideal solutions; Y cj is the weight value of each evaluation index;

[0202] (4) Calculate the relative closeness F between each evaluation object and the positive ideal solution i :

[0203]

[0204] (5) Relative closeness F i ∈[0,1], the safety target assessment results of coal mine enterprises are divided into five categories, namely, excellent: 0.9≤F i ≤1; Good: 0.8≤F i <0.9; Medium: 0.7≤F i <0.8; pass 0.6≤F i <0.7; Failure i <0.6.

[0205] Correspondingly, the present invention also proposes a coal mine enterprise safety target assessment and evaluation method based on the above-mentioned coal mine enterprise safety target assessment and evaluation system, and the method specifically includes the following steps:

[0206] S1. Construct a coal mine safety target assessment and evaluation index system;

[0207] S2. Determine the scoring criteria for each evaluation indicator and calculate the score for each evaluation indicator;

[0208] S3. Use the AHP method to calculate the subjective weight of the indicators, use the entropy weight method to calculate the objective weight of the indicators, and calculate the comprehensive weight of the indicators;

[0209] S4. Based on the comprehensive weight of each indicator determined by the AHP and entropy weight method, the TOPSIS method is used to calculate the degree of proximity between the evaluation index and the idealized target, and the safety target assessment results of each department in the coal mine are obtained.

[0210] Aiming at the problems that there are many and complex influencing factors of coal mine safety management and safety target assessment lacks scientific and reasonable indicator confirmation method and quantitative evaluation method, the present invention constructs a coal mine safety assessment evaluation index system according to national standards and specifications; the TOPSIS evaluation method with comprehensive weighting of AHP and entropy weight method is adopted, which can not only overcome the shortcomings brought by a single weighting method, but also make the evaluation results more objective and comprehensive to reflect the coal mine safety target assessment results and safety management level, make up for the lack of more scientific and quantitative evaluation methods in coal mine safety target assessment, and is conducive to coal mine managers to truly grasp the actual level of coal mine safety management and the specific weak links, and take targeted measures to timely improve the coal mine safety management level and effectively prevent accidents.

[0211] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A coal mine enterprise safety target assessment and evaluation system, characterized by: The system includes a safety target assessment data entry layer, a safety target assessment evaluation layer, and a safety target assessment result application layer; The safety target assessment data entry layer is used to obtain the problem data of each evaluation indicator through a computer terminal according to the set safety target assessment evaluation indicators, and upload it to the safety target assessment evaluation layer; The safety target assessment evaluation layer is used to call the TOPSIS evaluation model of AHP and entropy weight method to generate safety target assessment results of various departments in the coal mine, and transmit the assessment results to the safety target assessment result application layer; The safety target assessment result application layer is used to send the safety target assessment evaluation results of each department of the safety target assessment evaluation layer to managers at all levels through computer terminals. Managers at all levels make relevant rectifications based on the evaluation results and upload the relevant rectification results to the safety target assessment result application layer again, thereby forming a closed-loop feedback.

2. The coal mine enterprise safety target assessment and evaluation system according to claim 1 is characterized by: The safety target assessment and evaluation layer includes a safety target assessment and evaluation indicator setting module, a score calculation module, an AHP and entropy weight method comprehensive right confirmation module, and a TOPSIS evaluation module; The safety target assessment and evaluation indicator setting module is used to evaluate the safety of multiple first-level indicators including accident prevention, three violations control, disaster management, risk management, hidden danger management, equipment management, safety training, and safety investment as a whole; The score calculation module is used to calculate the scores of the first-level indicators of accident prevention, three violations control, disaster management, risk management, hidden danger management, equipment management, safety training, and safety investment. Each first-level indicator is scored out of 100 points, and the final score is calculated by subtraction method; The AHP and entropy weight method comprehensive right confirmation module is used to calculate the comprehensive weights of the primary indicators including accident prevention, three violations control, disaster management, risk management, hidden danger management, equipment management, safety training, and safety investment; The TOPSIS evaluation module calculates the degree of proximity between the evaluation index and the idealized target based on the comprehensive weight of each primary index determined by the AHP and entropy weight method comprehensive confirmation module, thereby obtaining the safety target assessment results of each department of the coal mine; The data at the safety target assessment data entry layer include the first-level indicators input through the computer terminal: accident prevention, three violations control, disaster management, risk management, hidden danger management, equipment management, safety training, and safety investment, which belong to the second-level indicator occurrence data.

3. The coal mine enterprise safety target assessment and evaluation system according to claim 2 is characterized by: The safety target assessment and evaluation indicator setting module includes the first-level indicators of accident prevention, three violations control, disaster management, risk management, hidden danger management, equipment management, safety training, and safety investment, which are divided into multiple levels and multiple branches for management; Multiple levels include the first level and the second level; multiple branches, that is, the first level is divided into multiple branches including accident prevention, three violations control, disaster management, risk management, hidden danger management, equipment management, safety training, and safety investment.

4. The coal mine enterprise safety target assessment and evaluation system according to claim 3 is characterized by: The accident prevention mentioned above includes no personal injury accidents of minor injury or above, no non-fatal accidents of level 2 or above, no non-fatal accidents of level 3, and no new occupational cases; The three violations control mentioned above includes no serious "three violations", no unsafe behavior and general "three violations"; The disaster management includes effective prevention and control of major disasters such as water, fire, gas, and rock burst, and 100% implementation of prevention and control measures; The risk control mentioned above includes 100% implementation of major risk control plans and 100% implementation of safety and technical measures for risky operations; The hidden danger management includes no major accident hidden dangers and timely rectification of problems found in inspections at all levels; The equipment management includes timely inspection of equipment and instruments with a 100% qualified rate in use, and complete equipment and facilities for fire fighting in accordance with standards with a 100% intact rate; The safety training mentioned above includes 100% employee safety education pass rate, 100% pass rate of random inspections, and safety education and training work carried out in accordance with regulations; The safety investment includes the completion of relevant production safety investment and safety technical measures engineering plan work content.

5. The coal mine enterprise safety target assessment and evaluation system according to claim 2 is characterized by: The score calculation module calculates the scores of the first-level indicators including accident prevention, three violations control, disaster management, risk management, hidden danger management, equipment management, safety training, and safety investment; Among them, the score calculation of the accident prevention project includes the score calculation of no minor injury or above personal injury accidents, no level 2 or above non-fatal accidents, no level 3 non-fatal accidents, and no new occupational cases; Scoring calculation for the "three violations" control items, including no serious "three violations", no unsafe behavior and general "three violations"; Scoring of disaster management projects, including effective prevention and control of major disasters such as water, fire, gas, and rock burst, and 100% implementation of prevention and control measures; Scoring of risk control projects, including 100% implementation of major risk control plans and 100% implementation of safety and technical measures for risky operations; Scoring of hidden danger control projects, including the absence of major accident hazards and timely rectification of problems found in inspections at all levels; The score calculation of equipment management items includes the score calculation of equipment and instruments being inspected on time and having a 100% qualified rate in use, and fire-fighting equipment and facilities being fully equipped according to standards and having a 100% intact rate; Scoring calculation for safety training projects, including 100% passing rate for employee safety education, 100% passing rate for random inspections, and scoring calculation for safety education and training work carried out in accordance with regulations; The score calculation for the safety investment project includes the score calculation for completing the relevant production safety investment and safety technical measures engineering plan work content.

6. The coal mine enterprise safety target assessment and evaluation system according to claim 5 is characterized by: The score calculation formula for the accident prevention project by the score calculation module is: Among them, Y A Points for accident prevention, to Indicates the number of A1 to A4 occurrences; A1 means no light injury or above personal injury accidents, A2 means no level 2 or above non-fatal accidents, A3 means no level 3 non-fatal accidents, and A4 means no new occupational cases; The calculation formula for the three violation control project scores is: Among them, Y B Score points for the three violation control projects, to It is the number of occurrences of B1 to B2; B1 means no serious "three violations", B2 means no unsafe behavior and general "three violations"; The calculation formula for disaster management project scores is: Among them, Y C Score disaster management projects, is the number of C1 occurrences, where C1 means that major disasters such as water, fire, gas, and rock burst are effectively prevented and controlled, and that the prevention and control measures are 100% implemented; The formula for calculating the risk management project score is: Among them, Y D Score the risk management project. to It is the number of occurrences of D1 to D2; D1 means that the major risk control plan is 100% implemented, and D2 means that the safety and technical measures for risky operations are 100% implemented; The calculation formula for hidden danger control project scores is: Among them, Y E Score points for hidden danger control projects. to The number of occurrences of E1 to E2; E1 means no major accident hazards, and E2 means timely rectification of the problems found in inspections at all levels; The equipment management project score calculation formula is: Among them, Y F Score points for the Equipment Management project, to It is the number of occurrences of F1 to F2; F1 means that the equipment and instruments are inspected on time and the qualified rate in use is 100%; F2 means that the fire-fighting equipment and facilities are fully equipped according to the standards and the intact rate is 100%;. The safety training program score calculation formula is: Among them, Y G Score points for safety training programs, to It is the number of occurrences from G1 to G3; G1 means that the employee safety education pass rate is 100%, G2 means that the inspection and random test pass rate is 100%, and G3 means that safety education and training work is carried out in accordance with regulations; The calculation formula for the safety investment project score is: Among them, Y H Score disaster management projects, It is the number of H1 occurrences; H1 means the completion of relevant production safety input and safety technical measures engineering plan work content.

7. The coal mine enterprise safety target assessment and evaluation system according to claim 2 is characterized by: The AHP and entropy weight method comprehensive confirmation module calculates the comprehensive weight of the first-level indicators, including the following steps: ① Using the AHP in the mathematical tool to calculate the subjective weight of each first-level indicator; ② According to the score results of each first-level indicator, the entropy value calculation function in the mathematical tool is used to calculate the objective weight of each first-level indicator; ③ Using the comprehensive weight calculation formula, according to the subjective weight and objective weight results of each first-level indicator, the comprehensive weight of each first-level indicator is calculated.

8. The coal mine enterprise safety target assessment and evaluation system according to claim 7 is characterized by: The AHP and entropy weight method comprehensive right confirmation module uses AHP to calculate the subjective weight of indicators, including the following steps: Through the scoring by industry experts, the "9-scale method" is used to determine the importance of each indicator factor and construct the judgment matrix A: In the formula, Indicates the comparison result of the importance of factor i0 and factor j; Calculate the sum of each column element M j : Perform normalization and calculate the normalized matrix N j : Calculate the subjective weight W of each indicator j : Where: j∈[1,n], n is the number of evaluation indicators; the entropy weight method is used to calculate the objective weight of the indicator, including the following steps: For the scoring matrix A = (a ij ) m×n After standardization, we get (p ij ) m×n : Where: p ij represents the feature weight of the i-th expert under the j-th indicator; i∈[1,m], j∈[1,n], m is the number of experts; Calculate the entropy value e of each indicator j : Calculate the objective weight Z of each indicator j : The comprehensive weight value Y of each indicator when calculating the comprehensive weight of the indicator j , the calculation formula is:

9. The coal mine enterprise safety target assessment and evaluation system according to claim 2 is characterized by: The TOPSIS evaluation module calculates the degree of proximity between the evaluation index and the idealized target, including the following steps: (1) Construct a weighted normalization matrix: When calculating benefit-based indicators: When calculating cost indicators: Where: r ij is the original data; is the standardized data; min(r ij ) and max(r ij ) are the minimum and maximum values ​​of each evaluation factor; is the weighted standard value of the jth index in the ith sample; R * represents the final weighted normalized matrix; (2) Determine the positive / negative ideal solution of the evaluation factor: Where: V - is the negative ideal of the evaluation index; V + is the positive ideal of the evaluation index; β1 is a cost-type index, that is, a set of negatively correlated indicators; β2 is a benefit-type index, that is, a set of positively correlated indicators; (3) Use Euclidean distance to calculate the distance between the evaluation object and the positive and negative ideal solutions respectively: Where: is the distance from the i-th sample to the negative ideal; is the distance from the i-th sample to the positive ideal; is the value of the jth index in the set of negative ideal solutions; is the value of the jth index in the set of positive ideal solutions; Y cj is the weight value of each evaluation index; (4) Calculate the relative closeness F between each evaluation object and the positive ideal solution i : (5) Relative closeness F i ∈[0,1], the safety target assessment results of coal mine enterprises are divided into five categories, namely, excellent: 0.9≤F i ≤1; Good: 0.8≤F i <0.9; Medium: 0.7≤F i <0.8; pass 0.6≤F i <0.7; Failure i <0.

6.

10. A method for assessing and evaluating the safety objectives of coal mine enterprises implemented based on the coal mine enterprise safety objective assessment and evaluation system according to claim 1, characterized in that: The method specifically comprises the following steps: S1. Construct a coal mine safety target assessment and evaluation index system; S2. Determine the scoring criteria for each evaluation indicator and calculate the score for each evaluation indicator; S3. Use the AHP method to calculate the subjective weight of the indicators, use the entropy weight method to calculate the objective weight of the indicators, and calculate the comprehensive weight of the indicators; S4. Based on the comprehensive weight of each indicator determined by the AHP and entropy weight method, the TOPSIS method is used to calculate the degree of proximity between the evaluation index and the idealized target, and the safety target assessment results of each department in the coal mine are obtained.

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