EN间歇性泄洪对鱼类躲避TDG过饱和胁迫空间的影响研究
间歇性泄洪对鱼类躲避TDG过饱和胁迫空间的影响研究
- 水电能源科学 2025年第2期 页码：78-83
- 作者机构：
1. 中国电建集团成都勘测设计研究院有限公司
2. 四川水发勘测设计研究有限公司
3. 长江水资源保护科学研究所
4. 四川大学山区河流保护与治理全国重点实验室
- 作者简介：
- 基金信息：国家自然科学基金项目(U2240212)
DOI：10.20040/j.cnki.1000-7709.2025.20232116
中图分类号： TV135.2-
纸质出版：2025
- 稿件说明：
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王莉, 唐琦, 冀前锋, 等. 间歇性泄洪对鱼类躲避TDG过饱和胁迫空间的影响研究[J]. 水电能源科学, 2025,(2):78-83.
王莉, 唐琦, 冀前锋, et al. 间歇性泄洪对鱼类躲避TDG过饱和胁迫空间的影响研究[J]. 2025, (2): 78-83.
王莉, 唐琦, 冀前锋, 等. 间歇性泄洪对鱼类躲避TDG过饱和胁迫空间的影响研究[J]. 水电能源科学, 2025,(2):78-83. DOI： 10.20040/j.cnki.1000-7709.2025.20232116.
王莉, 唐琦, 冀前锋, et al. 间歇性泄洪对鱼类躲避TDG过饱和胁迫空间的影响研究[J]. 2025, (2): 78-83. DOI： 10.20040/j.cnki.1000-7709.2025.20232116.
摘要
高坝泄洪造成的总溶解气体(TDG)过饱和威胁河道生态安全，目前尚无较好的解决方法。因此，采用平面二维数值模型，针对日调节水库运行特征，研究了不同间歇性泄洪工况下的TDG饱和度分布。结合鱼类对TDG饱和度的耐受能力，分析了间歇性泄洪工况下可供鱼类躲避区域面积的变化规律。结果表明，在等时段间歇性泄洪模式下，随着间歇时间增加，鱼类可躲避区域面积平均值逐渐增加，但可躲避区域面积最小值随间歇时间增加先减小后增大；在不等时段间歇性泄洪模式下，提高间歇时间与泄洪时间之比将增加鱼类可躲避区域面积，降低可躲避区域面积最小值。研究结果可为高坝工程制定生态调度提供方法参考，对维护河流生态安全具有一定的生态意义。
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