Table 4 The weight of each risk factor index of coal and gas(Calculated by G1 method).
From: Study on statistical analysis and prevention of coal and gas outburst accidents in Guizhou Province
Risk factors of first-level indicators | Weight(wj) | Secondary index risk factors | Weight(wj) |
|---|---|---|---|
Personnel risk factor | 0.322 | Physical and mental quality of the workers | 0.204 |
Safety awareness of the workers | 0.246 | ||
Working hours of the workers | 0.224 | ||
Ability of the safety management personnel | 0.321 | ||
Equipment risk factor | 0.207 | Configuration degree of intelligent monitoring system | 0.333 |
Load degree of intelligent equipment | 0.256 | ||
Safety of intelligent equipment components | 0.194 | ||
Aging degree of intelligent equipment | 0.213 | ||
Environment risk factor | 0.189 | Coal mining underground wind speed | 0.192 |
Coal mining underground space suitability | 0.121 | ||
Coal mining underground visibility | 0.110 | ||
Coal mining underground engineering layout | 0.269 | ||
Coal mining underground temperature | 0.160 | ||
Coal mining depth | 0.146 | ||
Management risk factor | 0.269 | Effectiveness of safety measures | 0.249 |
Soundness of safety rules and regulations | 0.189 | ||
Safety supervision level | 0.348 | ||
Safety training and education | 0.208 |
