基于一维水动力模型的利泽航电枢纽生态调度研究  

One-dimensional Hydrodynamic Modeling Based on the Lize Navigation and Hydropower Project Ecological Operation

作　　者：邹橙 杨景文 刘攀[1] 林东升 陈文兵 唐金勇 安雪娇 刘川 ZOU Cheng;YANG Jing-wen;LIU Pan;LIN Dong-sheng;CHEN Wen-bing;TANG Jin-yong;AN Xue-jiao;LIU Chuan(State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,Hubei Province,China;China Water Resources Pearl River Planning,Surveying&Designing Co.,Ltd.,Guangzhou 510000,Guangdong Province,China;Chongqing Jialing River Lize Navigation Electrical Development Co.,Ltd.,Chongqing 401546,China;Chongqing Shipping Construction Development Group Co,Chongqing,401546,China)

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072 [2]中水珠江规划勘测设计有限公司,广东广州510000 [3]重庆嘉陵江利泽航电开发有限公司,重庆401546 [4]重庆航运建设发展(集团)有限公司,重庆401546

出　　处：《中国农村水利水电》2024年第12期170-176,共7页China Rural Water and Hydropower

基　　金：嘉陵江亭子口水库以下梯级联合生态调度项目(LZ-DL-2022-050)。

摘　　要：水利工程的建设改变了下游河流的水文情势,对河流生境产生了不利影响。在嘉陵江全江渠化的工程背景下,梯级航电枢纽形成的缓流江段将无法为漂流性鱼卵提供适宜的漂流条件,导致鱼卵下沉死亡,鱼类资源萎缩。针对嘉陵江干流漂流性鱼卵孵化受阻的问题,提出利泽航电枢纽生态调度方案。首先,建立桐子壕航电枢纽至草街航电枢纽一维水动力模型,并验证了模型的可靠性;其次,确定了漂流性鱼卵孵化的流速阈值,据此制定利泽航电枢纽生态调度方案;最后,根据利泽航电枢纽的调度规则计算了生态调度期间的经济效益损失。研究结果显示,一维水动力模型模拟结果与实际径流相关系数为0.88,纳什效率系数为0.78,能有效反映了模拟江段的流速变化过程。制定了利泽生态调度的第一天泄水1550 m^(3)/s,第二天泄水1820 m^(3)/s,第三天泄水2000 m^(3)/s,第四天泄水2400 m^(3)/s,第五天泄水1980 m^(3)/s,第六天泄水1550 m^(3)/s的最小下泄流量,能够满足漂流性鱼卵的流速需求;当天然径流无法满足时,需要亭子口水库配合开展联合生态调度。研究结果可为考虑漂流性鱼卵孵化需求的生态调度提供技术支撑。The construction of water resources projects has changed the hydrological situation of downstream rivers and adversely affected er habitats.Under the engineering background of the whole river canalization of the Jialing River,the slow-flowing river section the cascade navigation and hydropower project will not be able to provide suitable drifting conditions for drifting fish eggs,which will sink and die,and the fish resources will shrink.This paper proposed an ecological scheduling program for the Lize navigation and hydropower project in response to the problem of impeded hatching of drifting fish eggs in the main stream of the Jialing River.Firstly,a one-dimensional hydrodynamic model was established from Tongzihao navigation and hydropower project to CaoJie navigation and hydropower project,and the reliability of the model was verified;Secondly,the flow rate threshold for drifting fish egg hatching was determined,according to which the ecological scheduling plan for the Lize navigation and hydropower project was formulated;Finally,the economic benefits loss due to ecological water discharge was calculated according to the scheduling rules of the Lize navigation and hydropower project.The results show that the correlation coefficient between the one-dimensional hydrodynamic model simulation results and the actual runoff is 0.88,and Nash efficiency coefficient is 0.78,which can effectively reflect the simulation of the flow velocity change process of the simulated river section.The minimum underflow of 1550 m^(3)/s on the first day,1820 m^(3)/s on the second day,2000 m^(3)/s on the third day,2400 m^(3)/s on the fourth day,1980m^(3)/s on the fifth day,and 1550 m^(3)/s on the sixth day of the Lize ecological scheduling is formulated,which can meet the flow rate requirements of drifting fish spawn;when the natural runoff cannot be met,the Tingzikou Reservoir is required to cooperate in joint eco-opera‐tion.This study may provide technical support for ecological scheduling studies that consider the hatching needs

关 键 词：水动力模拟 漂流性鱼卵 生态调度 鱼类繁殖 

分 类 号：TV213[水利工程—水文学及水资源]