發(fā)布時(shí)間：2018-11-28 09:42

【摘要】：魚道進(jìn)口的布置方式直接影響著集誘魚水流的水力學(xué)特性,集誘魚水流能否被魚類識別和適宜魚類洄游,決定著誘魚效果,是整個(gè)魚道工程成敗的關(guān)鍵。本文提出兩種魚道進(jìn)口布置方式,分別布置于閘墩旁和集誘魚通道旁。為說明不同的魚道進(jìn)口布置方式對集誘魚水流水力學(xué)特性的影響,采用標(biāo)準(zhǔn)k-ε3維紊流模型和VOF模型,對兩種布置方式進(jìn)行了3維數(shù)值模擬,并通過物理模型試驗(yàn)結(jié)果驗(yàn)證數(shù)值模擬的合理性。通過對比分析兩種布置方式集誘魚水流的流態(tài)、流速、流速適宜區(qū)寬度和紊動(dòng)能表明:在集誘魚通道布置方式下,集誘魚水流流速更小,下游靠邊最大流速減小1.0 m/s;流速適宜區(qū)(0.70~1.41 m/s)橫向?qū)挾雀?最大橫向?qū)挾仍龃?.0 m;水流紊動(dòng)能更小,魚道進(jìn)口處最大紊動(dòng)能減小0.60 m~2/s~2。集誘魚通道布置方式下的水流具有更適宜魚類洄游的水力學(xué)特性,能更有效地吸引并引導(dǎo)魚類洄游上溯,找到魚道進(jìn)口,可為魚道進(jìn)口布置設(shè)計(jì)和研究提供參考。
[Abstract]:The arrangement of the entrance of the fish channel directly affects the hydraulic characteristics of the fish trap flow. Whether the fish trap flow can be recognized by fish and is suitable for fish migration determines the fish lure effect and is the key to the success or failure of the whole fish tunnel project. In this paper, two kinds of fish channel inlet arrangement are put forward, which are arranged by the pier and the fish trap respectively. In order to explain the influence of different entrance arrangement of fish channel on the hydrodynamic characteristics of fish trap flow, the standard k- 蔚 3D turbulent model and VOF model were used to simulate the two layout methods. The rationality of the numerical simulation is verified by the results of the physical model test. By comparing and analyzing the flow patterns of the two kinds of arrangement, the width of the suitable area and the turbulent energy show that the velocity of the water is smaller and the maximum velocity of the downstream reaches is decreased by 1.0 m / s under the arrangement of the fish-trap channel. In the suitable area of velocity (0.70 ~ 1.41 m / s), the transverse width is larger, the maximum transverse width is increased by 3.0 m, and the turbulent energy of the flow is smaller, and the maximum turbulent energy at the entrance of the fish channel is reduced by 0.60 m/ 2 / s ~ (-2). The water flow under the arrangement of fish trap channel is more suitable for fish migration, which can effectively attract and guide the fish migration upstream, find the entrance of the fish channel, and provide reference for the design and research of the fish channel inlet arrangement.
【作者單位】： 四川大學(xué)水力學(xué)與山區(qū)河流開發(fā)保護(hù)國家重點(diǎn)實(shí)驗(yàn)室;中國電建集團(tuán)貴陽勘測設(shè)計(jì)研究院有限公司;
【基金】：國家重點(diǎn)研發(fā)計(jì)劃資助項(xiàng)目(2016YFC0502207) 中國電建科研專項(xiàng)資助:水電工程過魚設(shè)施關(guān)鍵技術(shù)研究
【分類號】：S956.3;TV135

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