舟曲三眼峪泥石流风险评价
The Risk Assessment for Sanyanyu Debris Flow, Zhouqu
-
摘要: 以往的泥石流风险评价仅局限于某个单一时点的风险分析,而对泥石流发生前后和治理前后的评价因子变化情况以及由此带来的风险变化则缺少分析和研究.选择舟曲三眼峪泥石流作为研究对象,采用单沟泥石流风险度评价模型,利用现场调查、工程勘查、工程设计等资料,分析"8.8"前、现状情况下和治理后3个不同时点的评价因子变化情况,得到各自的危险度和易损度评价参数;分别对这3个时点的泥石流风险度做了计算,得到各自风险度的大小;最后对评价结果做了讨论,分析了不同时点风险度发生变化的具体原因.
-
关键词:
- 舟曲“8.8”特大泥石流 /
- 三眼峪 /
- 风险评价
Abstract: Before,the debris flow risk assessment only focuses on a specific time point's risk.Few study analyzed the assessment factors changes and the risk's variations as a result of time change(before or after the debris flow occurring).The paper took Zhouqu Sanyanyu debris flow as a study case,applied the single debris flow risk assessing model;utilized the data of reconnaissance,explorations,and count measures engineering designs;analyzed the risk assessment factors changes at different time points which are before "8.8" disasters,at present,and after count measurements;acquired the parameters of hazards and vulnerability separately;and calculated the risks at these three time points.Finally,discussed the risks assessment results and analyzed the detailed reasons for the risk's variations at different time points.-
Keywords:
- Zhouqu“8.8”extremely large debris flow /
- Sanyanyu /
- risk assessment
-
计量
- 文章访问数: 2524
- HTML全文浏览量: 0
- PDF下载量: 4064
下载:
