Full
Outline
Aiming at the high temperature-pollution coupling problem caused by complex diagonal ventilation in the large-scale mining of dense stope groups of deep well in metal mines, a four-dimensional analysis framework of "orthogonal test and control variable method, Fluent numerical simulation, Ventsim ventilation solution and multiple linear regression" was constructed, which revealed the key role of the selective closing of the wind door in the cross-cut in the reconstruction of the wind path. The results show that the importance of the influence of various factors on the temperature field of the ore drawing roadway is as follows: the surrounding rock temperature>the inlet wind velocity of the 2# cross-cut>the inlet wind temperature>the inlet wind velocity of the 0# cross-cut. The optimization scheme of closing the wind door of 0# cross-cut roadway and constructing 2# inlet and 0# outlet through the wind path is proposed. The scheme increases the wind volume of the ore drawing roadway from 10.8 m3/s to 30.7 m3/s, increases the regional wind speed from 0.1 m/s to 0.6 m/s, and reduces the average temperature in the roadway to 26.03 ℃. The optimization scheme effectively solves the problem of local crosswind, improves the efficiency of pollutant discharge, and improves the underground working environment. It provides a theoretical basis and engineering practice example for the regulation of "precise minimally invasive surgery" for the ventilation system of dense stope groups in similar deep wells.
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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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