果洛州乡镇级公路雪灾风险探讨

发布时间：2018-03-03 04:33

  本文选题：雪灾　切入点：果洛州　出处：《青海师范大学》2016年硕士论文　论文类型：学位论文

【摘要】：雪灾是影响青海南部高原牧业生产最主要的自然灾害。果洛州由于位置偏远,地理环境复杂,经济发展相对滞后,其道路建设相对比较落后,所以当雪灾来临时往往受灾比较严重。本文通过利用青海省果洛州公路网、乡级气象资料与社会经济发展数据,采用ArcGIS软件,层次分析法(AHP)与聚类分析方法相结合的方法,对果洛地区40个乡镇的雪灾道路成灾风险进行评估。通过雪灾致险程度指数与脆弱性指数耦合,计算果洛州雪灾公路成灾风险指数,从而为雪灾后果洛州地区的救援与道路疏通提供科学的参考和依据,对防灾、救灾工作能有所帮助。结果表明,果洛州40个乡镇的公路雪灾风险为轻度的乡镇占乡镇总数的42.5%,中度的占32.5%,较重的占10%,重度的占15%,因此可以认为所研究的40个乡镇中,雪灾公路的成灾风险以轻、中度为主,部分地区情况较重。通过得出的结论,专门针对公路提出相应的防灾、救灾建议。由于前人所进行的大多数研究是从大尺度的领域对雪灾进行研究,而从乡镇一级出发并且专门将公路作为承险体来进行研究的非常少,所以本研究对防灾救灾工作有很强的实用价值和可操作性。
[Abstract]:Snow disaster is the most important natural disaster affecting animal husbandry production in the southern plateau of Qinghai. Because of its remote location, complex geographical environment, relatively backward economic development, and relatively backward road construction, Therefore, when the snow disaster comes, the disaster is often more serious. This paper combines the road network, township meteorological data and socio-economic development data of Guoluo County, Qinghai Province, with ArcGIS software, Analytic hierarchy process (AHP) and cluster analysis. This paper evaluates the risk of snow disaster road in 40 villages and towns in Guoluo area. Through the coupling of snow disaster risk index and vulnerability index, the disaster risk index of snow disaster road in Guoluo County is calculated. Thus, it can provide scientific reference and basis for rescue and road dredging in Guoluo County after snow disaster, and can be helpful for disaster prevention and relief work. The results show that, The road snow disaster risk of 40 towns in Guoluo County is 42.5% of the total number of towns and townships of light degree, 32.5% of which is moderate, 10% of the heavier, 1510% of the heavy. Therefore, it can be considered that the risk of the snow disaster road in the 40 villages and towns studied is mainly light and moderate. In some areas, the situation is relatively serious. Through the conclusions reached, the corresponding disaster prevention and disaster relief suggestions were made specifically for the highway. Since most of the previous studies were carried out on a large scale, the snow disaster was studied. But from the township level and special highway as a risk body to study very few, so this study on disaster prevention and relief work has a strong practical value and maneuverability.
【学位授予单位】：青海师范大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U492.8;P426.63
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本文编号：1559577