摘要
天然河道中支流流量的变化会对下游河道水流的水温分布产生一定程度的影响，进而影响河道的水生态平衡及水生物分布。以新疆开都河中一段天然河道为例，运用Mike11软件结合影响河道水温变化的因素，建立了一维水温数值模型，研究了4~8月天然河道在双支流汇入情况下，支流流量变化对河道水流月平均升温的影响。结果表明，一定流量范围内，对于温度均匀水体上游支流流量小于下游支流流量时，有利于主河道水温升高，且支流流量越大越不利于河道水温的上升；通过控制支流流量，利用支流间的相互影响可在一定程度上调节河道水温分布，对改善水生生物环境具有积极的意义。
In natural river, the change of tributaries inflow, to some extent, have impact on the temperature distribution of downstream river. Thus, it influences ecological balance and biological distribution. Taking a natural segment of Kaidu river in Xinjiang as an example, Mike11 software is used to establish one dimensional water temperature numerical model by considering the factors for influencing the change of river water temperature. And then the influence of tributaries flow change on the monthly average water temperature rising is studied under the conditions of double tributaries inflow natural river during April to August. The results show that, in certain flow rang, for uniform water temperature, when upstream tributary flow smaller than downstream, it is beneficial to water temperature natural recovery, but the large tributary flow the worse for water temperature natural recovery. Through controlling tributaries flow and utilizing interaction between tributaries can adjust the distribution of mainstream temperature and have a positive signification for adjustment of aquatic environment.
出处
《水电能源科学》
北大核心
2014年第2期27-30,共4页
Water Resources and Power
关键词
双支流河道
支流
r-入
水温
数值模拟
天然河道
double tributaries
tributaries inflow
water temperature
numerical simulation
natural channel
