基于历史输沙率的水库悬移质泥沙淤积计算

发布时间：2018-05-15 00:20

本文选题：水库泥沙淤积 + 小湾水电站　；参考：《云南大学学报(自然科学版)》2017年06期

【摘要】：水库泥沙淤积是电站运行管理中必须掌握的重要信息,梯级水电开发淹没了原有水文观测站断面,导致缺乏用于计算淤积量的出入库泥沙观测资料.论文提供一种较为精确估算梯级水库淤积的计算思路,选取小湾水库为案例,通过比对2015年与历史时期水库汇水区内气象站降雨资料,选用与2015年降雨量近似年份的输沙率,进行出入库悬移质输沙量的计算;采用Brune模型计算梯级水库拦沙率;综合考虑出入库输沙量与上下游水库的拦沙量,计算获得2015年小湾电站的库区淤积量为11.45×106t.研究结果为小湾水库水沙科学调度和安全运行提供理论依据.所使用的方法和研究结果可以为其它水库开展年淤积量计算提供技术参考.
[Abstract]:Reservoir siltation is an important information that must be grasped in the operation and management of power station. The development of cascade hydropower submerges the original hydrological observation station section, which leads to the lack of sediment observation data to calculate the siltation amount in and out of the reservoir. This paper provides a more accurate calculation method for estimating the deposition of cascade reservoirs. Taking Xiaowan reservoir as an example, the paper compares the rainfall data of meteorological stations in the catchment area of reservoirs in 2015 and historical periods, and selects the sediment transport rate similar to the rainfall in 2015. In this paper, the suspended sediment transport capacity is calculated, the Brune model is used to calculate the sediment retention rate of cascade reservoirs, and the sediment retention capacity of upstream and downstream reservoirs is considered synthetically, and the siltation of Xiaowan Hydropower Station in 2015 is calculated to be 11.45 脳 10 ~ 6 t. The results provide theoretical basis for scientific regulation and safe operation of water and sediment in Xiaowan Reservoir. The method and the research results can provide technical reference for the calculation of the annual siltation amount in other reservoirs.
【作者单位】：昆明理工大学环境科学与工程学院;华能澜沧江水电股份有限公司;云南大学国际河流与生态安全研究院;
【基金】：国家自然科学基金(41261100,41571032,41561144012) 国家科技支撑计划(2013BAB06B00)
【分类号】：TV145

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