浐河水沙变化特性及橡胶坝库区水面线研究  

Study on Runoff and Sediment Changing Characteristics and Water Surface Profile for the Reservoir Area of Rubber Dam in Chanhe River

作　　者：李洋洋[1,2] 周维博[1,2] 白洁芳 LI Yangyang ZHOU Weibo BAI Jiefang(Key Laboratory of Subsurface Hydrology and Ecology in Arid Areas of Ministry of Education, Chang＇an University, Xi＇an 710054, China College of Environmental Science and Engineering, Chang＇an University, Xi＇an 710054, China)

机构地区：[1]长安大学旱区地下水文与生态效应教育部重点实验室,陕西西安710054 [2]长安大学环境科学与工程学院,陕西西安710054

出　　处：《华北水利水电大学学报（自然科学版）》2017年第3期82-86,共5页Journal of North China University of Water Resources and Electric Power：Natural Science Edition

基　　金：中国地质调查局地质调查项目(12120113004800)

摘　　要：在自然因素和人为因素的综合作用下,浐河流域的来水、来沙特性发生了一定的变化。通过分析浐河流域1960—2012年共53 a的水沙资料,掌握了浐河流域的水沙特征及水沙关系。结果表明:浐河流域多年径流量和输沙量年际分配极不均匀,水沙系列总体下降趋势明显。流域径流量与输沙量呈正相关关系,径流输沙主要集中在每年7月。人类活动通过改变流域下垫面情况,作用于水沙关系,使得水沙双累积曲线在1979年和2003年发生了改变。此外,选择橡胶坝的两种典型工况,得出立坝时的水面线较塌坝时的水面线平稳,塌坝时的水流发生了水跃现象。By integrated influences of natural and human factors, some changes of runoff and sediment characteristics occurred in the Chanhe River basin. By analyzing the data of runoff and sediment for total 53 years from 1960 to 2012, we mastered the characteristics and relationships of runoff and sediment in the Chanhe River basin. The results show that the inter-annual distribution of runoff and sediment is asymmetrical for many years in the Chanhe River basin, the series of runoff and sediment is an obvious downward trend. The relationships between runoff and sediment is positively correlated, sediment transported by runoff mainly concentrates in July each year. Human activities impact on the relationship between runoff and sediment by changing the underlying conditions of the basin, this is the reason why the double cumulative curves of runoff and sediment appeared change in 1979 and 2003. In addition, two typical working conditions of rubber dam were selected to analyze the water surface, it is concluded that the water surface profile of filled dam was more stable than that of collapsed dam, hydraulic jump phenomenon occurred when dam collapsed.

关 键 词：浐河流域 径流量 输沙量 双累积曲线 水面线 

分 类 号：TV145.3[水利工程—水力学及河流动力学]