【作者】 吴素杰； 宗全利； 郑铁刚； 王子坚； 刘贞姬；

【Author】 Wu Sujie;Zong Quanli;Zheng Tiegang;Wang Zijian;Liu Zhenji;College of Water Conservancy and Architectural Eengineering,Shihezi University;Sate Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,China Institute of Water Resources and Hydropower Research;The Surveying and Designing Institute(Group) of Xinjiang Production and Construction Crop Co.,Ltd;

【机构】 石河子大学水利建筑工程学院； 中国水利水电科学研究院； 新疆生产建设兵团勘测设计院(集团)有限责任公司一分院；

【摘要】 中国北部高寒地区冬季严寒,引水式水电站引水渠冰害严重,为探讨外界热量注入渠道提升水温的效果,该文以新疆红山嘴二级电站引水渠道为研究对象,通过建立三维紊流数值模型对多口融冰井同时运行条件下引水渠道水温变化过程进行仿真计算,其计算结果与原型观测结果基本一致。在此基础上,通过改变井水流量、渠道水温、渠道引水流量、外界大气温度等条件,对引水渠道水温沿程变化过程进行了模拟研究。结果表明:井水流量、渠道水温均与混合后水温成正比,在融冰井运行过程中,每一口融冰并不仅影响其下游水温,对其上游一定距离的渠道水温也有一定影响;还根据得出的各井不冻长度,提出了在不同渠道引水流量、不同气温条件下井群合理优化布置方案。此研究可为解决寒区水电站引水渠道冰害问题提供科学依据。更多还原

【Abstract】 In the northwest alpine regions,it’s easy to produce ice problem and be clogged for the long distance of diversion channel for diversion type power station.To explore the outside heat injection channels to enhance the effect of water temperature.In this paper,based on the diversion channel of Hongshanzui Water Power Station,a threedimensional turbulence numerical model was proposed to simulate the change process of water temperature of diversion channel for the condition of Multi-port melting ice wells running.The calculation results are consistent with the prototype observation.On this basis,by changing the discharge of well water,the temperature of channel water,the discharge of channel diversion water and the atmospheric temperature and other conditions,the water temperature change process of diversion channel was simulated and studied.The results indicated that the discharge of well water and the temperature of channel water are proportional to mixed water temperature,and during the process of melting ice well running,each of the melting ice well not only affect the downstream water temperature,but also affect the upstream water temperature in some distance.According to length of the ice-free water for the wells,the reasonable optimal placement program of the wells was proposed in the different discharge of channel diversion water and the different atmospheric temperature.This study could provide valuable information for preventing ice hazards of diversion channel in the cold regions.更多还原