Table 5 The weight correction value of each risk index factor of coal and gas outburst.
From: Study on statistical analysis and prevention of coal and gas outburst accidents in Guizhou Province
Risk factors of first-level indicators | Weight(yi) | Secondary index risk factors | Weight(yi) |
|---|---|---|---|
Personnel risk factor | 0.220 | Physical and mental quality of the workers | 0.201 |
Safety awareness of the workers | 0.243 | ||
Working hours of the workers | 0.219 | ||
Ability of the safety management personnel | 0.319 | ||
Equipment risk factor | 0.265 | Configuration degree of intelligent monitoring system | 0.327 |
Load degree of intelligent equipment | 0.254 | ||
Safety of intelligent equipment components | 0.191 | ||
Aging degree of intelligent equipment | 0.209 | ||
Environment risk factor | 0.192 | Coal mining underground wind speed | 0.189 |
Coal mining underground space suitability | 0.120 | ||
Coal mining underground visibility | 0.106 | ||
Coal mining underground engineering layout | 0.258 | ||
Coal mining underground temperature | 0.157 | ||
Coal mining depth | 0.144 | ||
Management risk factor | 0.194 | Effectiveness of safety measures | 0.246 |
Soundness of safety rules and regulations | 0.186 | ||
Safety supervision level | 0.337 | ||
Safety training and education | 0.198 |
