在不同的选择性提取类型下,深层单体水库的热反应
Guangyang Hu1, Zhonghua Yang1, Jing Lu1
1State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, 430072, China.
Journal of environmental management
|January 1, 2025
概括
选择性提取方法,如多层和内部,对水库的热分层产生不同的影响. 施密特稳定性指数 (SSI) 最好反映这些温度变化,指导最佳水库管理策略.
科学领域:
- 环境科学 环境科学
- 水文学的水文学
- 水资源管理 水资源管理
背景情况:
- 水库建设可能会对水质和生态系统产生负面影响.
- 选择性戒断是缓解这些不良影响的关键策略.
- 了解多层和内部取水之间的热响应差异对于准确的水库调度至关重要.
研究的目的:
- 根据不同的选择性提取类型和方案,研究大型深层单体水库的热反应.
- 探索选择性提取对水温的调节机制及其在不同水文条件下的适用性.
- 为最佳的水库管理提供选择性提取策略建议.
主要方法:
- 使用水力动力热数值模型进行模拟.
- 分析了垂直温度梯度 (VTG) 和施密特稳定性指数 (SSI) 的变化.
- 根据不同的选择性提取类型 (多层与内部) 和方案评估的热应答.
主要成果:
- 观察到VTG和SSI之间的异步;SSI是反映分层的最佳选择.
- 多级退出加强了分层,增加了表面温度,并加厚了热线.
- 内部堤的撤回会加深和强化热线,同时降低其厚度.
结论:
- 选择性提取方案显著改变了水库的热结构和分层.
- 吸入深度会影响表面温度,热临床位置和分层持续时间.
- 根据热特性和水需求,建议针对单体水库量身定制的选择性取水策略.
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