中国水土保持科学2017，Vol.15Issue(3)：17-25,9.DOI:10.16843/j.sswc.2017.03.003
宁夏典型流域淤地坝系运行风险评价
Evaluation on the operation risk of dam system in the typical watersheds of Ningxia
摘要
Abstract
[Background]Dilapidated dam will seriously threaten people's life and property safety,therefore,the identification and research of check dam's operation risk is particularly important.[Methods] Selecting Chelugou dam system of Ningxia as the research object,a set of relatively complete evaluation index system of operation risk of both single dam and the whole dam system were extracted and established respectively from four aspects of engineering,management,economy and structure.With the method of improved AHP (Analytic Hierarchy Process) to calculate the index weight,the operation risk of single dam under seven different storm return periods and that of the whole system under the return period of 300 years were calculated and evaluated comprehensively,meanwhile the risk map of temporal and spatial distributionof single dam was made as well.[Results] For the operation risk of single dam,it showed that there were three check dam including Chelugou,Qianzu and Dongzhuangwan,which operation risk grade grew from class Ⅲ (generally dangerous stae) under the occuring period of 10 years to class Ⅱ (dangerous state) under the occuring period of 50 years,100 years,300 years,which need to be taken seriously.On the whole,the project and economic risk of single dam in Chelugou dam system were generally high,which exceeded 0.8 and 0.4 perspectively,that was related to,the majority of dam in Ningxia was given priority to water storage.For the evaluation of dam system,when suffered a heavy rain of period 300 years,the operation risk of Chelugou basin from high to low were as follows:Wangzhao unit(0.51,classⅢ) ＞ Qianzu unit(0.50,classⅢ) ＞ the whole basin(0.44,classⅢ) ＞ Dapin unit (0.39,class Ⅳ) ＞ Panluwan unit (0.35,class Ⅳ),meaning that all dam unit were in the generally dangerous state or generally safe state.And from the view of whether dam system unit or the whole basin,the basin were all in a safe state of operation.It could also been seen from the results that the key dam unit was the Wangzhao unit and Qianzu unit which influenced the operation safety of the whole dam system.In addition to building spillway,it was necessary to deal with the damaged parts of dam body as well as water release works as soon as possible to eliminate hidden dangers.[Conclusions] The paper realized the evaluation work of operation risk of single dam,check dam unit as well as the dam system on the whole.These results would provide certain reference to the safety forecast warning of check dam in the region and help the administrative department of rapid decision-making,so as to ensure the safe and stable operation of check dam and lay the foundation for establishing the safety emergency response mechanism and operation measures.关键词
淤地坝系/坝系单元/运行风险/指标体系Key words
check dam system/dam unit/operation risk/index system分类
农业科技引用本文复制引用
王丹,哈玉玲,李占斌,于坤霞,卜崇德,张虎威,苏立平..宁夏典型流域淤地坝系运行风险评价[J].中国水土保持科学,2017,15(3):17-25,9.基金项目
国家重点研发计划项目“宁夏淤地坝运行风险研究”(2016YF0402404) （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) （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) （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) （201501045）
