摘要
最小生态流量是小水电科学合理调度的重要依据,对稳定河流水文情势和保障河流生态环境安全具有重要意义。以汉江支流湑水河干流上的观音峡水电站为研究对象,分别采用Tennant法、90%保证率最枯月流量法、Texas法、基流比例法、年内展布法、湿周法、生态水深-流速法等对该水电站的最小生态流量进行了分析研究,结果显示,各方法计算的结果差异较大,最大值约为最小值的7倍。从各计算方法的主要指示因子出发,构建判断矩阵,分析的各方法权重依次为0.0640、0.0256、0.0256、0.1971、0.1971、0.0994、0.3912,综合分析确定的该水电站的最小生态流量1.10 m^(3)/s,约占多年平均流量的17%。
The minimum ecological discharge is an important basis for the scientific and reasonable operation of small hydropower,which is of great significance to stabilize the hydrological regime of rivers and ensure the ecological environment safety of rivers.Taking Guanyinxia hydropower station on the main stream of Xusui River,a branch of the Hanjiang River as the research object,the minimum ecological discharge of the station was analyzed and calculated by Tennant method,the 90%guarantee rate of discharge in the lowest month,the Texas method,the base current proportion method,the annual distribution method,the wet cycle method,and the ecological depth to velocity method.The results are as follows.The results calculated by different methods vary greatly,and the maximum value is about 7 times of the minimum value.Based on the main indicator factors of each calculation method,a judgment matrix was constructed.The weights of each analysis method were 0.0640,0.0256,0.0256,0.1971,0.1971,0.0994,0.3912,and the minimum ecological discharge of the hydropower station was determined by comprehensive analysis to be 1.10 m^(3)/s,which is about 17 percent of the annual average traffic.
作者
贾子烨
杨颖刚
王双银
王曦
何冰晶
JIA Ziye;YANG Yinggang;WANG Shuangyin;WANG Xi;HE Bingjing(College of Water Resources and Architectural Engineering,Northwest A&F University,Yangling,Shaanxi 712100,China;Shaanxi Water Conservancy and Hydropower Development Center,Xi'an,Shaanxi 710000,China)
出处
《水利与建筑工程学报》
2021年第4期194-198,204,共6页
Journal of Water Resources and Architectural Engineering
基金
陕西省水利科技项目“陕西省绿色小水电建设及运行技术研究”(2014slkj-09)。
关键词
生态流量
水文学法
水力学法
观音峡水电站
ecological flow
hydrologic method
hydraulic method
Guanyinxia Hydropower Station
