Full
Outline
The excavating in the east stope of Bayan Obo Iron Mine has been started since 1958, the belt conveyer system of rock has been put into production since June of 2007 and the maximum capacity of rock dumping is up to 6.25 million t/a until now. With the continuous stretching downward of the stope, the east stope is gradually entering into the period of natural production reduction and the annual amount of stripping rocks of stope is gradually reduced. In 2016, the planned amount of stripping rocks was 4 million t and 3.92 million t of them were transported with the belt conveyer system. The actual production capacity of belt conveyer system is much larger than the annual planned amount of rock dumping and tends to be larger and larger year by year. After analysis and overall consideration, the mode of production organization of east stope is changed and the production technology is optimized. Part of ore is transported to the ore platform of dump with the surplus production capacity of belt conveyer system, then the ore is transported again to the reshipment platform to reduce the transportation costs and improve the utilization rate of belt conveyer system so that the target of reducing costs and increasing benefits is achieved, which is with greater reference significance for management of similar mines.
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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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