小浪底水库降水冲刷效果影响因素试验研究  

Experimental Study on Effect of Water Lowering and Scouring of the Xiaolangdi Reservoir

作　　者：王婷[1] 马迎平[2] 张俊华[1] 李涛[1] 樊文玲[1] 

机构地区：[1]黄河水利科学研究院水利部黄河泥沙重点实验室,河南郑州450003 [2]黄河勘测规划设计有限公司,河南郑州450003

出　　处：《人民黄河》2014年第8期4-6,共3页Yellow River

基　　金：国家自然科学基金资助项目(51179072;51309110);中央级公益性科研院所基本科研业务费专项(HKY-JBYW-2012-14)

摘　　要：基于小浪底水库控制水位分别为210、220 m,洪水过程分别为12、16 d,库区淤积量分别约为32亿、42亿m3,进行了4组降水冲刷试验,研究了不同因素对库容恢复效果的影响。结果表明,相同边界条件和控制水位下,入库流量、含沙量越大,冲刷历时越长,则库区冲刷效果越好;相同边界条件和水沙条件下,控制水位越低,则库区冲刷效果越好;相同水沙条件和控制水位下,前期淤积面越高,则冲刷效果越好。Water lowering and scouring at right occasion is a common and effective measure to restore storage capacity of the reservoir. Based on the control conditions of water level 210 m and 220 m respectively,flood duration of 12 d and 16 d,amount of sedimentation approximately 3. 2 billion m^3 and 4. 2 billion m^3 ,four groups of tests of scouring by lowering the water level were conducted to study the effluence of different factors on storage recovery in late sediment-retaining period of Xiaolangdi Reservoir. The results show that with the same boundary conditions and water level control,the greater the reservoir inflow and sediment concentration,the longer the scouring duration and the better scour effect of the reservoir area. With the same water and sediment conditions and the controlled water level,the higher the deposition surface is,the better the scouring effect will be.

关 键 词：拦沙后期 降水冲刷 溯源冲刷 模型试验 小浪底水库 

分 类 号：P333[天文地球—水文科学] TV882.1[水利工程—水文学及水资源]