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Outline
A newly built open-pit mine has power tower foundations of Yiquanyi Line and Jinzhong DC transmission lines distributed within about 300 m on both sides, and slope excavation of the mine may cause the power tower foundations to topple, sink, or be damaged by rockfall impact. Stereographic projection, limit equilibrium method and finite element numerical simulation methods were adopted, and the disturbance range caused by open-pit slope excavation, slope stability and the impact of rockfalls at the slope top on power tower foundations were analyzed from qualitative and quantitative perspectives. The results show that when the open-pit slope is excavated to the final boundary, the slope is in a stable state. The distances from the power tower foundations adjacent to both sides of the stope to the disturbance range are 69.2-192.9 m, and the tower foundations are outside the scope of potential slope sliding surfaces corresponding to the minimum safety factor. The rockfalls at the slope top of the mining area mostly roll into the surrounding depressions. The power tower foundations on both sides of the open-pit stope are located at a high position and there are no rockfalls nearby. The mining of the new open-pit mine will not cause impacts on the power tower foundations on both sides of the stope.
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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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