宁夏典型流域淤地坝系运行风险评价

发布时间：2018-05-05 01:23

本文选题：淤地坝系 + 坝系单元　；参考：《中国水土保持科学》2017年03期

【摘要】：病险坝会严重地威胁到人民生命和经济财产安全,因此淤地坝运行风险的识别和研究尤为重要。选取宁夏西吉县车路沟坝系为研究对象,分别提取并建立一套相对完整的单坝及坝系运行风险评价指标体系,结合改进层次分析法计算指标权重,对各坝7个暴雨重现期下的运行风险及坝系300年一遇情景下的运行风险进行了评价。结果表明:随着重现期的增加,车路沟、前咀骨干坝以及东庄湾中型坝的风险等级发生了不同程度的变化,需重点关注;当遭遇300年一遇暴雨时,西吉车路沟流域运行风险值由高到低依次是:王昭单元前咀单元流域坝系大坪单元盘路湾单元,各淤地坝单元以及流域坝系均处于运行安全状态。本研究整体上实现了单坝,淤地坝单元以及流域坝系的运行风险评价,为该地区的淤地坝安全预报预警提供一定的借鉴和参考。
[Abstract]:The dangerous dam will seriously threaten people's life and economic property, so it is very important to identify and study the operational risk of silt dam. A set of relatively complete evaluation index system of single dam and dam system operation risk is extracted and established by selecting Cailugou dam system in Xiji County of Ningxia as the research object, and the index weight is calculated with the improved Analytic hierarchy process (AHP). The operational risk of each dam during the recurrence period of 7 rainstorms and the operational risk of dam system under the once-a-300 year scenario are evaluated. The results show that with the increase of the recurrence period, the risk levels of Che Lu Gou, Qianzui backbone Dam and Dongzhuang Bay medium Dam have changed to different degrees, which should be paid more attention to, and when encountered with 300 years of heavy rain, The operational risk value of Xijicelugou watershed is in the order of high to low: the dam system of the Qianzui unit of Wangzhao unit, the Panluwan unit of Daping unit, the silt dam unit and the dam system of the basin are in safe operation state. In this study, the operation risk assessment of single dam, silt dam unit and basin dam system is realized as a whole, which provides a certain reference and reference for the silt dam safety prediction and early warning in this area.
【作者单位】：西安理工大学西北水资源与环境生态教育部重点实验室;宁夏回族自治区水利厅;
【基金】：国家重点研发计划项目“宁夏淤地坝运行风险研究”(2016YF0402404) 国家自然科学基金重点项目“黄土高原生态建设的生态-水文过程相应机理研究”(41330858);国家自然科学基金“黄土高原流域淤地坝对流域侵蚀过程调控机理研究”(41401305) 水利部公益性行业科研经费“生产建设项目水土保持生态效应与评价技术研究”(201501045)
【分类号】：S157.31

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