山区沿河路基水毁灾害风险定量评价方法

发布时间：2018-01-18 10:21

本文关键词：山区沿河路基水毁灾害风险定量评价方法　出处：《自然灾害学报》2014年02期 　论文类型：期刊论文

【摘要】：针对山区沿河路基水毁灾害风险的定量评价问题,对风险评价体系进行了论述。借助"信息熵"模型,提出了山区沿河路基水毁灾害的危险性定量评价方法及危险性分级。从承灾体自身抗灾能力和区域抗灾能力两方面,建立了承灾体自身易损性和区域易损性分级,结合承灾体的暴露性分级,提出了山区沿河路基水毁灾害承灾体的易损性评价方法及易损性分级。根据山区沿河路基水毁灾害危险性和易损性分级,建立了风险评价矩阵,并对风险进行了分级。通过实例分析,证明该方法可以较好地解决山区沿河路基水毁灾害风险的定量评价问题。
[Abstract]:In view of the problem of quantitative evaluation of disaster risk of river subgrade in mountainous area, the risk evaluation system is discussed, with the help of "information entropy" model. This paper puts forward the quantitative evaluation method and risk classification of the flood damage disaster of the roadbed along the river in the mountainous area, from two aspects of the disaster bearing body's own disaster resistance ability and the region's disaster resistance ability. The classification of vulnerability and regional vulnerability of disaster bearing body is established, combined with the exposure classification of disaster bearing body. This paper puts forward the method of vulnerability evaluation and vulnerability classification of waterborne disaster bearing body of roadbed along river in mountainous area. According to the classification of hazard and vulnerability of river roadbed in mountainous area, the risk assessment matrix is established. It is proved that this method can solve the problem of quantitative evaluation of disaster risk of river subgrade destruction in mountainous area.
【作者单位】：长安大学特殊地区公路工程教育部重点实验室;
【基金】：西部交通建设科技项目(2006 318 000 07) 中交股份科技研发项目(2011-ZJKJ-04)
【分类号】：U418.54
【正文快照】： 沿河路基水毁是山区公路常见的毁坏方式,也是世界各国共同面临的一个普遍问题。我国地域辽阔,山川纵横,气候多变,沿河公路水毁灾害频繁,损失严重。1980年以来,全国公路水毁损失平均每年多达几十亿元,且呈逐年上升的趋势。据不完全统计,2000年全国公路水毁损失金额达72.86亿元,

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