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57 / 2025-08-15 16:55:36
Study on the development characteristics and mechanisms of typical disaster chains in coal resource bases of the Yellow River "Ji-shaped Bend" region, China
Yellow River "Ji-shaped Bend",Loess disaster chain,Coal resource base,Disaster mechanism,Triggering factors
Geo-hazards caused by human activities
摘要待审
chuyi Xu / Northwest University
The Yellow River "Ji-shaped Bend" region is a key coal resource base and strategic energy zone in China. It features complex geology and a fragile ecological environment, with extensive coal mining activities that frequently trigger geological disasters, forming a distinct disaster chain. These hazards pose significant threats to mine safety, regional ecology, and sustainable economic and social development.This study examines the loess disaster chain(DCL)at Anshan Coal Mine, analyzing its topographical features, development patterns, and disaster mechanisms. It investigates how the physical and mechanical properties of loess change under varying water contents and compaction levels. Additionally, it explores the key factors and dynamic processes driving the disaster chain and reveals its underlying formation mechanisms.Findings indicate that after saturation, loess samples exhibit significant reductions in shear stress, cohesion, and internal friction angle, with cohesion experiencing the greatest decline. Comparative experiments show that lower compaction results in higher permeability and faster disintegration rates. The primary factors influencing the disaster chain include loess properties, extreme rainfall, geological structure, coal mining, and improper excavation, with extreme rainfall identified as the main trigger at Anshan Coal Mine.Based on these findings, the disaster chain evolution at Anshan Coal Mine progresses through five stages: 1) loess fissure formation, 2) loess landslide occurrence, 3) landslide transformation into debris flow, 4) debris flow erosion and expansion, and 5) debris flow accumulation.This study provides scientific insights for sustainable energy development and disaster prevention while offering valuable references for disaster chain research in similar geological settings.

 
重要日期

  • 会议日期

    08月23日

    2025

    至

    08月26日

    2025

  • 08月15日 2025

    初稿截稿日期

  • 08月20日 2025

    报告提交截止日期

  • 08月26日 2025

    注册截止日期

主办单位
Southwest Jiaotong University, China (SWJTU)
International Consortium on Geo-disaster Reduction (ICGdR)
UNESCO Chair on Geoenvironmental Disaster Reduction
承办单位
Southwest Jiaotong University, China (SWJTU)
International Consortium on Geo-disaster Reduction (ICGdR)
UNESCO Chair on Geoenvironmental Disaster Reduction
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