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Threshold Model for Rainfall-Induced Landslides in Yuanma Basin
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Changcong LONG1, Junwei LI2, Xin JIANG3, Jin WANG4, Yanping DUAN1
Mining and Metallurgical Engineering | 2025, 45(3) : 22 - 28
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Mining and Metallurgical Engineering | 2025, 45(3): 22-28
• MINING •
Threshold Model for Rainfall-Induced Landslides in Yuanma Basin
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Changcong LONG1, Junwei LI2, Xin JIANG3, Jin WANG4, Yanping DUAN1
Affiliations
  • 1.Geological Survey Institute of Hunan Province, Changsha 410014, Hunan, China
  • 2.Geological Experiment and Testing Center of Hunan Province, Changsha 410007, Hunan, China
  • 3.Geological and Geographic Information Institute of Hunan Province, Changsha 410014, Hunan, China
  • 4.Hunan University of Science and Technology, Xiangtan 411201, Hunan, China
Published: 2025-06-01 doi: 10.3969/j.issn.0253-6099.2025.03.004
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As for rainfall-induced landslides in Mayang, Yuanling and Luxi counties within the red-bed region of the Yuanma Basin in Hunan Province, a correlation between landslides and rainfall were analyzed. Based on the E-D threshold model, the daily rainfall (R) was introduced as a third indicator to construct an E-D-R threshold model, thereby rainfall thresholds were determined for the Yuanma Basin. The study area was divided into warning units with the Thiessen Polygon method, enabling a county-level, unit-based graded warning response. The results show that the period from four days before a landslide to the day of the landslide represents the critical rainfall period for inducing landslides in the Yuanma Basin, and it is deemed appropriate for the effectiveness coefficient (α) of the rainfall to be 0.5. Compared to the two-dimensional E-D threshold model, the three-dimensional E-D-R threshold model demonstrates higher precision and offers greater accuracy and reliability in landslide risk assessment. The grid-based and refined division of warning units not only enhances the refined management and control capabilities of meteorological warnings for landslide disasters, but also facilitates unit-specific differentiated warnings in future forecasting by integrating predicted rainfall and rain information.

Yuanma Basin  /  landslide  /  rainfall  /  threshold model  /  warning and forecasting  /  geological disaster
Changcong LONG, Junwei LI, Xin JIANG, Jin WANG, Yanping DUAN. Threshold Model for Rainfall-Induced Landslides in Yuanma Basin[J]. Mining and Metallurgical Engineering, 2025 , 45 (3) : 22 -28 . DOI: 10.3969/j.issn.0253-6099.2025.03.004
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Year 2025 volume 45 Issue 3
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doi: 10.3969/j.issn.0253-6099.2025.03.004
  • Receive Date：2024-12-08
  • Online Date：2026-03-19
  • Published：2025-06-01
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  • Received：2024-12-08
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Affiliations
    1.Geological Survey Institute of Hunan Province, Changsha 410014, Hunan, China
    2.Geological Experiment and Testing Center of Hunan Province, Changsha 410007, Hunan, China
    3.Geological and Geographic Information Institute of Hunan Province, Changsha 410014, Hunan, China
    4.Hunan University of Science and Technology, Xiangtan 411201, Hunan, China
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表12种不同金属材料的力学参数
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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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