The Critical Role for Heavy Rainfall in the Evolution of the Mountain Hazards Chains
详细信息
- 责任者：Cui Yun (Institute of Mountain Hazards and Environment ; Chinese Academy of Sciences ; Chengdu 610041 ; China) ; Kong Jiming
- 刊名：Journal of Mountain Science
- 出版年：2011
- 卷期：29(1)
- 关键词：降雨量 ; rainfall ; 地质灾害 ; geologic hazards
- 页码：p.87-94
- 图表：6 illus., 4 tables, 11 refs.
- 分类号：1800
- 出版序号：20120573
- issnNo：ISSN1008-2786
- isbnNo：CN51-1516/P
摘要
Experienced drought in 2009, the rainy season of 2010 became a high time in the evolution of mountain hazards in the mountains in western China which is because of the heavy rain playing a key role. In order to analyze the key role of rainfall in the stimulating hazards chains evolution,mechanical model is built by landslide and debris flow as two key areas in hazards chains, then the result is verified by Guanling landslide-debris flow hazards chain and Zhouqu debris flow-dammed lake hazards chain. The final conclusions are: 1) landslides and debris flow is stimulated by heavy rainfall through a special water mechanism; and 2) the period of strong rain after long drought is the key opportunity for early warning and control of the hazards chain.
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