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Outline
With the gradual depletion of shallow resources in mines, deep mining has become an important way to obtain resources. A domestic metal mine under construction with an ultra-deep well under large-load and high-speed lifting system was taken as the research object. Simulation analysis of the aerodynamic pressure distribution laws of lifting containers was carried out by comparing the dynamic changes of air flow fields under different arrangement modes of shaft lifting containers and operating conditions. The standard k-ε turbulence model in fluid mechanics was adopted, and numerical simulations of the air flow behavior in the shaft during the operation of lifting containers were conducted using Fluent software. The aerodynamic pressure distribution around the containers during the lifting process was analyzed, and the container offset was calculated, thereby revealing the aerodynamic characteristics and lateral swinging patterns of the lifting containers in the shaft. The research results show that when two lifting containers running in opposite directions intersect in the shaft, obvious aerodynamic impact force and impact torque will be generated. Moreover, the lateral aerodynamic force of two-container in the shaft is greater than that of four-container, and the piston effect of the two-container shaft layout is more pronounced than that of the four-container shaft layout. From an aerodynamic perspective, the four-container layout should be prioritized for ultra-deep well lifting systems, with the two-container layout considered as a secondary option.
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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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