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Analysis of Erosive Wear Characteristics of Backfill Slurry on Reducing Bends
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Yongjun WANG1, Dongxiang HU1, Hui ZHENG1, Zhongchang WANG2
Mining and Metallurgical Engineering | 2025, 45(3) : 14 - 21
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Mining and Metallurgical Engineering | 2025, 45(3): 14-21
• MINING •
Analysis of Erosive Wear Characteristics of Backfill Slurry on Reducing Bends
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Yongjun WANG1, Dongxiang HU1, Hui ZHENG1, Zhongchang WANG2
Affiliations
  • 1.Yankuang Energy Group Company Limited, Jining 273500, Shandong, China
  • 2.School of Transportation Engineering, Dalian Jiaotong University, Dalian 116028, Liaoning, China
Published: 2025-06-01 doi: 10.3969/j.issn.0253-6099.2025.03.003
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As for backfill slurry transported through reducing bends, the effect of bend angle, inlet flow velocity, mass fraction and average particle size of slurry, mass flow rate, particle shape factor and particle impact angle on the erosive wear of reducing bends were analyzed with Fluent software. The results show that the inlet flow velocity of slurry exerts the most significant impact on the erosion-prone areas of pipeline. With the inlet flow velocity up from 0.8 m/s to 2.0 m/s, the erosion rate in the erosion-prone areas of the pipeline surges approximately 43 times. The average particle size of the slurry ranks second in terms of its impact on the pipeline's erosion-prone areas, while the bend angle and particle impact angle have relatively minor effects. It is found that the erosion rate in pipeline is related to the kinetic energy of slurry；the greater the kinetic energy of the slurry, the more severe the erosion. The erosive wear locations of pipeline are primarily distributed at the inlet, the inner and outer wall surfaces of the bend, and reducing section and the straight section to the elbow, with the connection between the reducing section and the outlet section worn most severely.

backfill slurry  /  reducing bend  /  erosive wear  /  transportation characteristics  /  pipeline transportation  /  pipeline wear
Yongjun WANG, Dongxiang HU, Hui ZHENG, Zhongchang WANG. Analysis of Erosive Wear Characteristics of Backfill Slurry on Reducing Bends[J]. Mining and Metallurgical Engineering, 2025 , 45 (3) : 14 -21 . DOI: 10.3969/j.issn.0253-6099.2025.03.003
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Article Info
doi: 10.3969/j.issn.0253-6099.2025.03.003
  • Receive Date：2024-12-04
  • Online Date：2026-03-19
  • Published：2025-06-01
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  • Received：2024-12-04
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Affiliations
    1.Yankuang Energy Group Company Limited, Jining 273500, Shandong, China
    2.School of Transportation Engineering, Dalian Jiaotong University, Dalian 116028, Liaoning, China
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Citations
表12种不同金属材料的力学参数
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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