【摘要】：阿爾塔什水利樞紐是葉爾羌河流域內(nèi)最大的控制性水庫工程,工作弧門的門槽采用突擴突跌坎型式。該工作閘門運行水頭高、過流流速大,存在較大的空化空蝕風(fēng)險。以研究論證工程1#深孔出口工作弧門突擴突跌門槽體型的水力及空化特性為目標(biāo),通過減壓模型試驗,采用三種方案比較優(yōu)化了突擴突跌門槽區(qū)的水流形態(tài)。試驗結(jié)果表明,通過調(diào)整突擴后邊墻擴散段的擴散角至1.273°,有效消減了下游邊墻的水翅強度,門槽段的動水壓力、水流空化特性均有明顯的改善。提出的水流流態(tài)及抗空化特性較好的突擴突跌門槽體型,為今后高水頭、大流量深孔工作弧門的門槽體型設(shè)計提供了經(jīng)驗和參考。
[Abstract]:The Altash Water Conservancy Project is the largest controlled reservoir project in the Yerqiang River basin. The gate groove of the working arc door adopts the type of sudden expansion and sudden fall. The operating head of the working gate is high, the flow velocity is high, and there is a great risk of cavitation erosion. In order to study and demonstrate the hydraulic and cavitation characteristics of the arc-gate suddenly expanding and falling trough at the exit of the deep hole of the engineering 1#, through the decompression model test, three schemes were adopted to compare and optimize the flow pattern in the region of the sudden expansion and falling gate. The experimental results show that by adjusting the diffusion angle to 1.273 擄, the water wing strength of the downstream wall, the hydrodynamic pressure of the gate groove and the cavitation characteristics of the water flow have been greatly improved by adjusting the diffusion angle of the diffusion section of the side wall after the sudden expansion to 1.273 擄. The flow state and cavitation resistance of the gate groove with good cavitation resistance are proposed, which provides experience and reference for the design of the gate groove with high water head and large flow rate working arc-gate with deep hole in the future.
【作者單位】： 新疆新華葉爾羌河流域水利水電開發(fā)有限公司;中國水利水電科學(xué)研究院;新疆水利水電勘測設(shè)計研究院;
【基金】：國家自然科學(xué)基金項目(51279216)
【分類號】：TV135.2

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相關(guān)期刊論文 前2條

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本文編號：2121423