Table 3 The weight calculation results of each factor ( entropy weight method ).
From: Study on statistical analysis and prevention of coal and gas outburst accidents in Guizhou Province
Risk factors of first-level indicators | Entropy(ej) | Weight(wj) | Secondary index risk factors | Entropy(ej) | Weight(wj) |
|---|---|---|---|---|---|
Personnel risk factor | 0.161 | 0.206 | Physical and mental quality of the workers | 0.982 | 0.031 |
Safety awareness of the workers | 0.887 | 0.097 | |||
Working hours of the workers | 0.954 | 0.044 | |||
Ability of the safety management personnel | 0.972 | 0.034 | |||
Equipment risk factor | 0.723 | 0.421 | Configuration degree of intelligent monitoring system | 0.908 | 0.087 |
Load degree of intelligent equipment | 0.897 | 0.107 | |||
Safety of intelligent equipment components | 0.865 | 0.129 | |||
Aging degree of intelligent equipment | 0.901 | 0.098 | |||
Environment risk factor | 0.125 | 0.194 | Coal mining underground wind speed | 0.924 | 0.038 |
Coal mining underground space suitability | 0.957 | 0.025 | |||
Coal mining underground visibility | 0.948 | 0.034 | |||
Coal mining underground engineering layout | 0.891 | 0.057 | |||
Coal mining underground temperature | 0.926 | 0.016 | |||
Coal mining depth | 0.957 | 0.024 | |||
Management risk factor | 0.181 | 0.179 | Safety training and education | 0.952 | 0.022 |
Safety supervision level | 0.936 | 0.031 | |||
Effectiveness of safety measures | 0.901 | 0.079 | |||
Soundness of safety rules and regulations | 0.925 | 0.047 |
