新疆卡拉贝利水库排沙效果试验研究  

Sediment Model Experimental Study on Sediment Flushing Effects of Kalabeili Reservoir in Xinjiang

作　　者：肖俊[1] 胡健[2] XIAO Jun;HU Jian(Xinjiang Water Resources and Hydropower Survey,Design and Research Institute Co.,Ltd.,Urumqi 830000,China;China Institute of Water Resources and Hydropower Research,Beijing 100048,China)

机构地区：[1]新疆水利水电勘测设计研究院有限责任公司,新疆乌鲁木齐830000 [2]中国水利水电科学研究院,北京100048

出　　处：《人民黄河》2023年第6期18-23,共6页Yellow River

基　　金：国家自然科学基金资助项目(U22A20237);新疆维吾尔自治区水利科技专项(XSKJ-2023-16)。

摘　　要：通过坝区动床泥沙物理模型试验,研究卡拉贝利水库的排沙问题。观测水库排沙运用时的坝前水流形态、沿程流速变化、冲刷漏斗形态,分析不同运用水位和开启不同排沙洞工况的水库排沙效果,并通过敞泄排沙试验探讨水库恢复部分库容的可能性。研究表明,水深与冲沙流量是影响水库排沙的重要因素,相同的冲沙流量下降低水位排沙效率更高。水库应根据上游来水来沙条件、电站运用情况和排沙洞前淤积高程,抓住有利时机,灵活地运用多种方式冲沙。Through the sediment model experiment of movable bed in dam area,the sediment discharge issue of Kalabeili Reservoir was studied.The flow pattern in front of the dam,the change of flow velocity along the dam and the shape of sand funnel were observed during the operation of reservoir sediment discharge.The effect of reservoir sediment discharge under different water levels and different working conditions of sand discharge tunnel was analyzed.The possibility of restoring part of the reservoir capacity was discussed through the open discharge test.The studies have shown that water depth and sediment discharge are important factors affecting reservoir sediment discharge,and the efficiency of reducing water level and sediment discharge is higher under the same sediment discharge.The reservoir should seize the favorable opportunity and flexibly use various ways to flush sand according to the upstream water and sediment conditions and the operation of the power station and the sedimentation elevation in front of the flushing tunnel.

关 键 词：水库排沙 冲刷漏斗 泥沙模型试验 卡拉贝利水库 

分 类 号：TV149.2[水利工程—水力学及河流动力学]