孤山电站对库区鱼类产卵场水文情势的影响研究

发布时间：2018-05-07 04:29

本文选题：鱼类产卵场 + 水文情势　；参考：《人民长江》2017年01期

【摘要】：汉江孤山水电站建成后,库区水文情势将发生变化,对库区的鱼类资源产生一定影响。采用一维水动力模型模拟了孤山水电站建库前后库区河段水文情势,并根据模拟结果分析了白河、将军河河口产漂流性卵鱼类产卵场的水文情势变化情况。结果表明,孤山电站建成运行后,库区河段日均水位、水面宽均有不同程度的增加,流速总体由库尾至坝前逐渐减小;白河、将军河河口断面水位分别抬高7,15 m,流速分别降低至0.11~0.14,0.08~0.09 m/s,水面宽分别增加33~49,104~150 m,鱼类产卵场水文情势变化明显。根据当地鱼类的产卵条件分析可知,鱼类产卵场生态环境将受到较大影响,鱼类产卵规模和效果将大幅降低。因此,水库建成后,应采取相应的措施保护当地的鱼类资源。
[Abstract]:After the completion of Gushan Hydropower Station in Hanjiang River, the hydrological situation of the reservoir area will change, which will have a certain impact on the fish resources in the reservoir area. A one-dimensional hydrodynamic model was used to simulate the hydrological situation in the reservoir area before and after the construction of the Gushan Hydropower Station, and the hydrological situation of the oviposition of drifting oviposit in the estuary of Baihe River and the estuary of the General River was analyzed according to the results of the simulation. The results show that the daily average water level and water surface width of Gushan Hydropower Station increase in varying degrees, and the velocity of flow decreases gradually from the tail of reservoir to the front of dam. The water level in the section of the mouth of the river was raised by 7 ~ 15m, the velocity of water was reduced to 0.110.140.14 ~ 0.08m / s, the width of the water surface increased by 334104 ~ 150m, and the hydrological situation of fish spawning site changed obviously. According to the analysis of the spawning conditions of local fish, the ecological environment of fish spawning grounds will be greatly affected, and the scale and effect of fish spawning will be greatly reduced. Therefore, the reservoir should take appropriate measures to protect the local fish resources.
【作者单位】：长江水利委员会长江水资源保护科学研究所;
【分类号】：S931.3;TV697.21

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