Full
Outline
In order to reduce the stripping transportation cost of open-pit mines and realize the efficient flow of stripping materials, the optimization design of open-pit mine road was studied. Firstly, the current situation of open-pit mine road optimization design was analyzed, and an open-pit mine road optimization design method based on truck fuel consumption law was proposed. The fuel consumption equivalent coefficient was introduced to reflect the fuel consumption of trucks under various slope conditions, which was convenient for accurate estimation of fuel consumption cost. Secondly, based on the measured fuel consumption data of trucks in an open-pit mine, the fuel consumption characteristics on heavy-haul uphill and no-load downhill for trucks under different slopes were quantitatively analyzed. Finally, according to the fuel consumption law of MT3700 truck, a design method of combined slope was explored by optimizing the slope and slope length of flat road section, and the optimization strategy of open-pit mine road was proposed. The results show that the truck transportation distance of open-pit mine should be controlled within 3.5 km as much as possible, and about 2 km is the best transportation distance. The fuel consumption generated after exceeding 3.5 km generally increases, and the growth rate is faster. The mine road design should reduce the height difference as much as possible and control the height difference within 160 m, among which the fuel consumption efficiency is the highest when the height difference is 80 m. The slope of the mine road is not sensitive to fuel consumption, so the overall slope of the mine transportation road can be appropriately increased to reduce the transportation distance to reduce fuel consumption.
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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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