白石窑坝下河段冲淤演变动床试验  

Experimental Study on Morphological Evolution of Movable-Bed in the Downstream of Baishiyao Dam

作　　者：倪志辉[1,2] 王明会[1] 易静[1] 张绪进[1,2] 杜宗伟[1,2] 

机构地区：[1]重庆交通大学水利水运工程教育部重点实验室,国家内河航道整治工程技术研究中心,重庆400074 [2]重庆交通大学西南水运工程科学研究所,重庆400016

出　　处：《重庆交通大学学报（自然科学版）》2014年第4期84-89,共6页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：重庆市自然科学基金项目(cstc2012jjA30002);省部共建水利水运工程教育部重点实验室暨国家内河航道整治工程技术研究中心开放基金项目(SLK2012A02);重庆交通大学研究生教育创新基金项目(20130114)

摘　　要：利用白石窑坝下河段实测水文、泥沙及地形等资料,结合水流运动相似和泥沙运动相似条件,模型采用大尺度、小变率且以推移质运动为主,建立并验证了动床试验模型;并在此基础上研究了白石窑坝下整治工程实施后的3个河段冲淤特性和形态演变。试验结果表明:坝下河道回水不衔接段回淤量最少、变动回水区段次之、常年回水区段最多;疏浚与筑坝相结合的整治措施在白石窑坝下航道整治中效果较好,回淤量得到了控制。By using the measured hydrologic, sediments and terrain data of downstream of Baishiyao Dam as well as the similar conditions of the flow and bed load sediment movement, the movable bed experimental model of large-scale, small variability and bed load movement-based was established and validated. On this basis, the characteristics of the erosion and deposition and morphological evolution of the three areas in the downstream of the Baishiyao Dam after the implementation of channel regulation project were studied. The research results show that the deposition of departing backwater area is the smallest, the second is the fluctuating backwater area and the largest is the perennial backwater area. Regulation measures of dredging and damming have significant achievements in the regulation of downstream of Baishiyao Dam and the amount of backwater is controlled.

关 键 词：航道工程 河床演变 泥沙冲淤 动床模型 河道整治 

分 类 号：U617.6[交通运输工程—船舶及航道工程]