Full
Outline
To address the problems of flow velocity runaway and wear risk caused by high potential energy in slurry filling pipelines of ultra-deep mines, the ANSYS numerical simulation method was employed to systematically reveal the influence mechanisms of coarse aggregate type, mass concentration, flow velocity, and pipeline geometric parameters on pipeline wear. An innovative two-stage pressure regulation and wear reduction technology was proposed. The results indicate that the coarse aggregate type has a limited effect on the pipeline wear rate, with the water-quenched slag-based slurry exhibiting the lowest wear rate. The slurry mass concentration is significantly negatively correlated with the pipeline wear rate, whereas the slurry flow velocity is linearly positively correlated with the pipeline wear rate. Among the pipeline geometric parameters, the bending angle and inclination angle exert significant effects on pipeline wear, with the most severe wear occurring at the bend sections. In response, horizontal turn-back loop pipes and electric pressure regulating valves are installed at the middle and lower sections of the pipeline to regulate the slurry flow velocity in stages within the range of 0.8-3.1 m/s. Supplemented by a T-shaped buffer structure to optimize the flow pattern, this technology substantially reduces pipeline wear and system pressure fluctuations. It can reduce the wear rate of critical 90° bends by 82% compared to the pre-modification level, reduce the system pressure fluctuation amplitude by approximately 40%, decrease the incidence of slurry leakage accidents by 30%, and enhance the system operational efficiency by 25%. The research results can provide key technical support for deep mineral resource development.
38
8
| 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 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
