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Outline
An open-pit boron-iron-uranium associated mine in north China was investigated. The gamma dose rate, radon concentration and radioactive aerosol radiation characteristics of the mine were detected and the individual dose estimation was carried out. The results show that the gamma external irradiation of the mine is mainly concentrated in the vicinity of gravity separation rocker, belt filter, product warehouse and contaminated vehicles and grinding machines. The hazards of radon internal irradiation mainly exist in the leaching plant, and there is no aerosol hazard. The enterprise should strengthen the training of operators of rocking table and belt filter to reduce the residence of personnel in automatic operation, the product barrels should be covered in time, the contaminated equipment should be detected and cleaned in time, ventilation should be strengthened for leaching plant.
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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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