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Analysis of Disaster Mechanism and Instability Process of Bedding Landslide with Weak Interlayer in Triassic Strata of Guizhou
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Jun-wei TIAN1, Xing-yuan JIANG1, 2, 3, *, Yang-chun LI4, Yi YANG2, Ying DUAN5, Bing-cai LIU2
Science Technology and Engineering | 2025, 25(9) : 3593 - 3603
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Science Technology and Engineering | 2025, 25(9): 3593-3603
• Papers·Astronomy and Geosciences •
Analysis of Disaster Mechanism and Instability Process of Bedding Landslide with Weak Interlayer in Triassic Strata of Guizhou
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Jun-wei TIAN1, Xing-yuan JIANG1, 2, 3, *, Yang-chun LI4, Yi YANG2, Ying DUAN5, Bing-cai LIU2
Affiliations
  • 1 Key Laboratory of Karst Geological Resources and Environment of Ministry of Education, Guizhou University, Guiyang 550025, China
  • 2 College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China
  • 3 Guizhou Zhengye Engineering Technology Investment Co., Ltd., Guiyang 550025, China
  • 4 Guizhou Geological Environment Monitoring Institute, Guiyang 550001, China
  • 5 Guizhou Provincial Ecological and Agrometeorological Center, Guiyang 550002, China
Published: 2025-03-28 doi: 10.12404/j.issn.1671-1815.2404173
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Most of Triassic strata in Guizhou are distributed with bedding rock landslides with weak interbeds, which are characterized by strong destructiveness, complex slip mechanism and difficult treatment. Taking the West Second Ring landslide in Guiyang City as an example, the disaster mechanism and instability evolution process were explored by means of field geological investigation, theoretical analysis and discrete element numerical simulation. The results show that the West Second Ring landslide is mainly composed of dolomitic layered cataclastic rock mass with good permeability and water retention, showing a “sponge” structure, and continuous rainfall is the direct cause of the landslide. The landslide is first cut out by the front sliding body and gradually pulled upward, and then the tensile cracks at the trailing edge of the sliding body developed further, which led to slip-tensile crack failure under the action of gravity. The simulation results are basically consistent with the actual situation. The landslide in West Second Ring Road can be divided into four stages of deformation and instability: natural dissolution and cracking, excavation and unloading expansion, saturated and weakened shear, and slow sliding and accumulation. The conclusions have certain reference significance for the disaster mechanism analysis and engineering prevention of Triassic bedding rock landslide with weak interlayer in Guizhou.

weak interlayers  /  bedded landslide  /  numerical simulation  /  disaster mechanism  /  movement process
Jun-wei TIAN, Xing-yuan JIANG, Yang-chun LI, Yi YANG, Ying DUAN, Bing-cai LIU. Analysis of Disaster Mechanism and Instability Process of Bedding Landslide with Weak Interlayer in Triassic Strata of Guizhou[J]. Science Technology and Engineering, 2025 , 25 (9) : 3593 -3603 . DOI: 10.12404/j.issn.1671-1815.2404173
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Year 2025 volume 25 Issue 9
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Article Info
doi: 10.12404/j.issn.1671-1815.2404173
  • Receive Date：2024-06-04
  • Online Date：2025-07-09
  • Published：2025-03-28
Article Data
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History
  • Received：2024-06-04
  • Revised：2024-12-30
Funding
Affiliations
    1 Key Laboratory of Karst Geological Resources and Environment of Ministry of Education, Guizhou University, Guiyang 550025, China
    2 College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China
    3 Guizhou Zhengye Engineering Technology Investment Co., Ltd., Guiyang 550025, China
    4 Guizhou Geological Environment Monitoring Institute, Guiyang 550001, China
    5 Guizhou Provincial Ecological and Agrometeorological Center, Guiyang 550002, China
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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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