Full
Outline
To address issues such as ventilation difficulties, deterioration of underground working environments, and increased ventilation energy consumption faced by complex high-resistance ventilation systems in ultra-deep mines, a study on quality improvement and consumption reduction of the ventilation system was conducted in Hongtoushan Copper-Zinc Mine. The research and application of complex low-resistance ventilation network construction, main fan setting optimization and remote intelligent frequency conversion control in ultra-deep mines with long strike were carried out by means of field investigation, calculation analysis and practical verification. After the implementation of the technical scheme of quality improvement and consumption reduction of the ventilation system, the ventilation resistance of the whole mine is reduced by 56.39%, the number of main fans is reduced from 4 to 2, and the deep air intake is increased by 36.1 m3/s. The ventilation energy consumption cost can be saved by 3.023 million yuan per year, and remarkable saving-energy and consumption-reducing effect has been achieved. The seven basic indicators of the ventilation system have been greatly improved, with an average increase of 20.43 percentage points, and the underground working environment has been significantly improved. The research results can provide a reference for the study on quality improvement and consumption reduction of ventilation systems in ultra-deep metal 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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