Full
Outline
In order to improve the reliability of rock mass quality evaluation in deep mines and overcome the controversial problem of index weight assignment in traditional evaluation models, five influencing factors were selected, with the help of moment estimation theory, a reasonable descending sequence of index weight was obtained, and the partial order set was introduced into rock mass quality classification. A comprehensive evaluation model of rock mass quality in underground mines based on moment estimation theory-partial order set was proposed. The model was tested with 12 typical rock samples as sample data and compared with the results of traditional evaluation models. The results show that the evaluation results of the model are completely consistent with the evaluation results of the matter-element extension model and the unascertained measure theory, and are completely consistent with the ranking results of the VIKOR model, indicating that it can accurately realize the rock mass quality classification and has good applicability in the rock mass quality evaluation under complex geological conditions. Finally, the model was applied to the evaluation of rock mass quality of a copper mine in Anhui Province. It is determined that marble belong to class Ⅱ rock mass, serpentinite and diorite porphyrite belong to class Ⅲ rock mass, and skarn belongs to class Ⅳ rock mass, which is consistent with the field investigation. Based on the results of rock mass quality classification, the support optimization scheme is proposed, and the optimized support scheme can effectively control the deformation of roadway and ensure the long-term stability of roadway.
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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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