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As mining depths increase, the synergistic effect of high in-situ stress and complex geological environments leads to frequent rock burst incidents. However, there is carrently a lack of comprehensive evaluation methods for the rock burst proneness of deep rock masses that accounts for multi-factor influences. Based on rock mechanics parameter tests conducted at an iron mine in the Xinjiang Uygur Autonomous Region, the rock burst proneness of the rock mass in the -450 m to -600 m level was evaluated using four indicators: the strength brittleness coefficient, the improved brittleness index, the maximum storage elastic strain energy, and the strain energy index. The results indicate significant dispersion among the evaluation results obtained by using different single indicators, rendering it difficult to accurately determine the actual rock burst proneness relying solely on an individual metric. Consequently, a comprehensive evaluation model for rock burst proneness was established by integrating the fuzzy mathematics method and the entropy weight method. A comprehensive assessment of the sandstone rock burst proneness in the -450 m to -600 m level of the mine was performed, revealing a moderate rock burst proneness across all cases. On-site investigations demonstrate that the evaluation results generated by the multi-indicator comprehensive evaluation method based on fuzzy mathematics align closely with the actual in-situ damage conditions, facilitating an accurate assessment of the rock burst proneness grade. These findings provide a rock bust theoretical basis and technical support for safe mine production and rock burst mitigation.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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