汉江中下游重要支流目标生态流量分期控制研究  

Phased control on target ecological flow for important tributaries in middle and lower reaches of Hangjiang River

作　　者：徐长江 邴建平 邓鹏鑫 XU Changjiang;BING Jianping;DENG Pengxin(Bureau of Hydrology,Changjiang Water Resources Commission,Wuhan 430010,China)

机构地区：[1]长江水利委员会水文局,湖北武汉430010

出　　处：《人民长江》2024年第5期84-89,共6页Yangtze River

基　　金：国家重点研发计划项目(2022YFC3002701);水利部重大科技项目(SKS-2022038);国家自然科学基金项目(52309004)。

摘　　要：为有效推进河湖生态流量保障体系建设,采用Qp法、Tennant法、近10 a最枯月法、频率曲线法等方法计算分析确定了汉江中下游重要支流控制断面基本生态流量,采用适配法确定各断面生态流量分月泄放目标。研究表明:(1)汉江中下游重要支流控制断面的基本生态流量为1.16~7.50 m^(3)/s,占年均流量的5%~15%。除南河谷城断面受金盆沟电站发电引水导致满足度偏低外,其他断面满足度均高于90%,可作为生态流量管控依据。(2)各断面生存流量分月控制目标为1.16~55.00 m^(3)/s,年泄放量占年均径流量的20%,月均满足度可达80%以上。研究成果可为健全法规体系、强化工程生态调度、汉江流域水资源保护及监督管理提供参考依据。To effectively promote the construction of the ecological flow guarantee system for rivers and lakes,the basic ecological flow of important tributaries in the middle and lower reaches of the Hanjiang River has been determined by the methods of Qp,Tennant,driest month in recent 10 years and frequency curve,and the control target for monthly ecological flow of the section has been delineated.The results showed that:①the basic ecological flow of the control sections in the important tributaries in the middle and lower Hanjiang River was 1.16~7.5 m ^(3)/s,accounting for 5%~15% of the annual average flow.In addition to the low satisfaction of the Gucheng section of Nanhe River due to the diversion of Jinpengou Hydropower Station,the satisfaction of other sections was higher than 90%,which can be used as the basis for ecological flow control.②Using the adaptation method,the monthly target of ecological flow for each section was determined to be 1.16~55.0 m^(3)/s,with an annual discharge volume accounting for 20%of the annual average runoff.And the monthly average satisfaction can reach more than 80%.The research can provide a reference for improving the legal system,strengthening the ecological operation of projects,and offering guidance for the supervision and management of water resources protection in the Hanjiang River Basin.

关 键 词：目标生态流量 分期控制 可达性 满足度 汉江中下游 

分 类 号：TV213.4[水利工程—水文学及水资源] X143[环境科学与工程—环境科学]