龙刘水库运用方式调整对宁蒙河道冲淤的影响  

Effects of Adjusted Operation Schemes of the Longyangxia and Liujiaxia Reservoirs upon Erosion and Deposition in Ningxia-Inner Mongolia Reach

作　　者：陈雄波[1] 杨振立[1] 鲁俊[1] 

机构地区：[1]黄河勘测规划设计有限公司,河南郑州450003

出　　处：《人民黄河》2013年第10期45-47,共3页Yellow River

基　　金："十二五"国家科技支撑计划项目(2013BAC10B02);水利部公益性行业科研专项(201001012);黄河设计公司自主研发项目(2011-KY06)

摘　　要：对安宁渡断面的来水来沙量进行了分析，根据拟定的龙羊峡、刘家峡水库调整运用方案，分别采用泥沙数学模型和BP神经网络计算了各方案河道泥沙冲淤量及典型断面的平滩流量。结果表明：①从宁蒙河道冲淤情况来说，各调整方案均有减淤作用，且随着汛期下泄水量的增大，河道减淤量也增大；②仅仅改变水库的运用方式，支流来沙不能得到有效控制，宁蒙河段仍会持续淤积；③通过综合比选，汛期增泄15亿~25亿m3的方案可作为现阶段调整龙羊峡、刘家峡水库运用方式的试验方案。This paper analyzed the incoming flow and sediment conditions in Anningdu section, simulated sedimentation quantities and bankfull discharges with numerical model and BP neural network based on the adjusted operation schemes of Longyangxia and Liujiaxia reservoirs. The re- sults show that ： a） Sedimentation will be reduced more for a larger volume of flow released ; b） The sedimentation will remain to continue if only the operation is executed but without the control of the flow and sediment processes coming from the tributaries; c） A new operation, which means more 1.5 billion - 2.5 billion m3 of water should be released in the flood season, is recommended as the scheme for the trial operation.

关 键 词：冲淤量 平滩流量 运用方式 龙羊峡水库 刘家峡水库 宁蒙河道 黄河 

分 类 号：TV697.1[水利工程—水利水电工程]