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水布垭水库属于典型的深水型水库,对水温的影响是水布垭水电站建设的主要环境影响,也是环境影响评价关注的重要内容之一。利用水布垭水电站竣工环境保护验收调查实测资料,对水温影响进行回顾评价,结果表明水布垭水库在春季、夏季和秋季存在水温分层现象,尤其以夏季水库水温分层最为明显,水库呈现出明显的双温跃层结构,夏季垂向温差在11.0~18.8℃,春秋季在7.6~11.1℃,5-9月水库下泄水温比天然河道水温低0.6~4.4℃,水库运行后水温实测结果与环境影响评价报告预测结论基本一致,采用一维垂向水温模型对深水型水库进行水温预测是可行的。
Shuibuya Reservoir is a typical deep-water reservoir. The impact on water temperature is the main environmental impact of Shuibuya hydropower station construction and one of the important contents of environmental impact assessment. Based on the survey data of the completion check of environmental protection of Shuibuya Hydropower Station, the influence of water temperature was retrospectively evaluated. The results show that Shuibuya Reservoir stratified water temperature in spring, summer and autumn, especially in the summer when the reservoir water temperature stratification was the most obvious A clear double thermocline structure, the summer vertical temperature difference between 11.0 ~ 18.8 ℃, spring and autumn at 7.6 ~ 11. 1 ℃, 5-9 month reservoir discharge water temperature is lower than the natural river water temperature of 0.6 ~ 4.4 ℃, after the operation of the reservoir temperature measured results It is feasible to predict the water temperature of deepwater reservoirs by using one-dimensional vertical water temperature model.