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Aiming at the steeply sloping broken thin orebody in the Mianhuakeng mine, the continuous mining method of deep hole blasting without inter-pillar was proposed. According to the technological characteristics of the method, the "inverted step shape" + up and down hole layout continuous mining, "positive step shape" + upward hole layout continuous mining and "positive step shape" + top pillar + upward hole layout continuous mining were proposed. The GRA-AHP and cloud model were combined to evaluate and optimize the three mining schemes, and it was concluded that the scheme of "positive step shape" + top pillar + upward hole layout is relatively safe and efficient, which provides a feasible technical scheme for the mining of broken orebody in Mianhuakeng mine.
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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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