季节性河道生态防洪调蓄补水方案研究  

Study on Ecological Flood Control Storage and Replenishment Scheme of Seasonal River Channel

作　　者：樊新建[1] 王彦虎 张永明[1,2] 贾昊 刘刚 龚真江 FAN Xin-jian;WANG Yan-hu;ZHANG Yong-ming;JIA Hao;LIU Gang;GONG Zhen-jiang(College of Energy and Power Engineering,Lanzhou University of Science and Technology,Lanzhou 730000,China;Gansu Provincial Institute of Water Resources Science and Research,Lanzhou 730000,China;Lanzhou New District Water Management and Investment Group Co.,Lanzhou 730300,China)

机构地区：[1]兰州理工大学能源与动力工程学院,甘肃兰州730050 [2]甘肃省水利科学研究院,甘肃兰州730000 [3]兰州新区水务管理投资集团有限公司,甘肃兰州730300

出　　处：《水电能源科学》2025年第4期54-59,共6页Water Resources and Power

基　　金：国家自然科学基金项目(513798128);甘肃省自然科学基金项目(21JR7RA238);甘肃省水利科学试验研究及技术推广项目(23GSLK038);甘肃省科技计划项目(21CX6ZA159)。

摘　　要：为研究季节性河道生态补水设计方案,以兰州新区水阜河为研究对象,利用MIKE21软件构建二维水动力模型,模拟研究了不同水位、流量下河道各断面流量变化及水流演进过程。结果表明,水位为0~0.2 m、流量为3.2~4.0 m^(3)/s时首次贯通时间与流量削减率较低,长度超过2.1 km时流量削减率超过50%;水位为0.2~0.6 m,流量为25~55 m^(3)/s条件下,在保障行洪安全时最大可能减少冲刷破坏与流量削减率,长度超过2.7 km时流量削减率超过50%。表明合理的槽蓄量设计能够缩短河道贯通时间、降低流量削减率,提升调蓄补水效率。In order to study the ecological water supplement design scheme of seasonal river channel,taking Shuifu River in Lanzhou New District as the research object,a two-dimensional hydrodynamic model was constructed by using MIKE21 software.The flow change and flow evolution process of each section of the river channel under different water level and flow were simulated and studied.The results show that the first penetration time and flow reduction rate are low when the water level is 0-0.2 m and the flow rate is 3.2-4.0 m^(3)/s,and the flow reduction rate exceeds 50%when the length exceeds 2.1 km.At 0.2-0.6 m water level,when the flow rate is 25-55 m^(3)/s,it is possible to reduce the erosion damage and flow reduction rate when ensuring the safety of flood discharge.When the length exceeds 2.7 km,the flow reduction rate exceeds 50%,the longer the recharge channel,the greater the reduction rate of flow.Reasonable channel storage design can shorten the river channel penetration time and reduce the flow reduction rate,and improve the efficiency of water storage and replenishment.

关 键 词：季节性河道 生态补水 槽蓄量 首次贯通 

分 类 号：TV213.4[水利工程—水文学及水资源] TV882