李绅东1,杜〓俊2,3,沈盛彧2,3,崔〓豪2,3,黄金权2,3.基于调查评价数据的永善县山洪灾害危险评价[J].水电能源科学,2018,36(10):72-75
基于调查评价数据的永善县山洪灾害危险评价
Hazard Assessment of Yongshan County based on Data from the Project of Investigation & Evaluation on Flash Flood Disasters
  
DOI:
中文关键词:  山洪  山洪灾害调查评价  危险评价  县域  小流域单元
英文关键词:flash food  investigation & assessment on flash food disasters  hazard assessment  county scale  watershed units
基金项目:国家自然科学基金青年项目(41501109);云南省昭通市永善县2014年度山洪灾害调查评价项目(CKSK2015397/TB)
作者单位
李绅东1,杜〓俊2,3,沈盛彧2,3,崔〓豪2,3,黄金权2,3 1. 云南省水文水资源局 昭通分局云南 昭通 6570002.长江科学院 水土保持研究所湖北 武汉 430010 3.水利部 山洪地质灾害防治工程技术研究中心湖北 武汉 430010 
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中文摘要:
      基于近年来的山洪灾害调查评价数据,以云南省永善县为例,在要素评价框架下提出了一种县域尺度山洪灾害危险评价方法。该方法以小流域为基本统计单元,从河道形态、小流域属性等方面细化指标体系,并综合主成分分析、层次分析法和熵值法进行指标权重设计。结果表明,永善县山洪灾害危险分布主要受褶皱山系控制、区域特征明显,高危险区约占全县小流域总量的59%,主要沿五莲峰山系贯穿县境南北,低危险区集中在县域东南低地势起伏地区。通过对比历史资料,认为该方法精度较高,可为山洪灾害调查评价工作提供补充,为小流域山洪灾害监测预警设施布设、优化山区村镇居民点和开发建设项目布局等提供指导。
英文摘要:
      Taking the Yongshan County as an example, a county scale hazard assessment method of flash flood disasters was proposed based on the data from the projects of investigation and evaluation on flash food disasters. The method was suggested under the framework of factors assessment of natural disasters, and the indices system, counted in watershed units, were established from the aspects of river channel morphology and watershed characteristics. Besides, the methods of PCA, AHP and entropy were used to design the weight of index. The results show that the watersheds in Yongshan County with high hazard level, accounting for about 59% of the whole watersheds, were mainly controlled by the folded mountains and distributed alone the Wulian mountain system, while the low hazard level watersheds were concentrated in the low relief area of the southeast of county. The method and its outcome suggested in this paper were more reliable and accurate according to the result of comparison with the previous data, and can be a complement for the project of investigation & evaluation on flash flood disasters, playing positive roles in guiding the layout of monitoring and early warning systems inner watershed, and optimizing the distribution of residential points and constructed items in mountain areas.
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