摘要
研究河流梯级水电开发的水温累积影响规律,可为制定水库联合运行水温调控方案提供科学依据。以黄河上游龙羊峡—刘家峡河段梯级水库群为例,基于水库与河道水温观测资料,对比分析了典型水库的水温影响特征;在不同水库联合运行期,结合水库运行条件与河道水温特征值的定量分析,辨别了各水库对水温累积影响贡献的差异,并探讨梯级水库水温累积效应的变化特征。研究结果表明:龙羊峡水库对水温的累积影响起主导作用并呈现了较大的波动性,李家峡水库为协同效应,公伯峡水库及其它小水库为削弱效应;多水库联合运行时,区间水库的兴建并未引起水温累积影响的明显增大,与李家峡水库单独运行期相比,在梯级末端水温累积协同效应依然显著。
This paper is to study the cumulative effect of water temperature via building cascade hydropower stations,thus,providing the scientific basis for working out the water temperature regulation scheme of reservoir united operation.With the cascade reservoirs on Longyangxia—Liujiaxia river section of the Yellow River Upstream as an example,and based on the data of water temperature observation and measurement in reservoirs and river courses,the typical reservoirs are selected to carry out the comparative analysis of the influence feature of water temperature;In different periods of reservoir united operation and in combination of reservoir operation conditions with the quantitative analysis of river course water temperature feature values,the contribution differences of cumulative effects by each reservoir are distinguished and the cumulative effects of cascade reservoir water temperature are discussed.The research results indicated that Longyangxia reservoir plays a dominant role in the cumulative effect of water temperature and appears to have a big fluctuation;Lijiaxia reservoir plays a synergistic role;and Gongboxia reservoir and other small reservoirs appear to have the weakened roles.When multi-reservoirs are in united operations,the construction of reservoirs between reservoirs can not cause the apparent effects,but compared with Lijiaxia reservoir in single operation,the water temperature synergistic effect at the end of cascade is still obvious.
出处
《西安理工大学学报》
CAS
北大核心
2012年第1期1-6,共6页
Journal of Xi'an University of Technology
基金
国家自然科学基金资助项目(51179151)
关键词
黄河上游
梯级水库
水温
累积影响
Yellow River Upstream
cascade reservoirs
water temperature
cumulative effect
