| 南方多沙河流水沙演变特征及水库的影响分析 |
| |
| 引用本文： | 孔兰,陈俊贤,陈晓宏.南方多沙河流水沙演变特征及水库的影响分析[J].水文,2012(4):49-53. |
| |
| 作者姓名： | 孔兰 陈俊贤 陈晓宏 |
| |
| 作者单位： | 中水珠江规划勘测设计有限公司;河海大学水利水电工程学院;中山大学水资源与环境研究中心;华南地区水循环和水安全广东普通高校重点实验室(中山大学) |
| |
| 基金项目： | 水利部公益性行业科研专项(201001022);国家自然科学基金重点项目(50839005);国家重点基础研究发展计划(973)项目(2010CB428405) |
| |
| 摘 要： | 以我国南方一多沙河流控制性水文站1959~2010年共52年的实测水沙资料为基础,运用Mann-Kendall法、变差系数、类比法和灰色系统理论等分析了该河的水沙演变特征及其梯级开发的影响。结果表明:①该河的水沙演变特征具有明显的年代际差异;在梯级开发前水沙均呈上升趋势,在梯级开发建库后呈下降趋势;输沙量的变化较径流量的变化显著。②水沙变化呈正相关关系;梯级开发后径流量和输沙量都明显小于梯级开发前;在1986年和2008年水沙关系有较明显的变化。③梯级开发会使径流量和输沙量减少;梯级开发是该河2008年水沙关系发生变化和输沙量明显减小的主要原因。
|
| 关 键 词： | 水沙变化 梯级开发 双累积曲线 |
Characters of Sediment Load and Runoff Evolution and Influence of Reservoir: A Case Study on Sandy River in South China |
| |
| KONG Lan,CHEN Junxian,CHEN Xiaohong.Characters of Sediment Load and Runoff Evolution and Influence of Reservoir: A Case Study on Sandy River in South China[J].Hydrology,2012(4):49-53. |
| |
| Authors: | KONG Lan CHEN Junxian CHEN Xiaohong |
| |
| Institution: | 3,4(1.China Water Resources Pearl River Planning Surveying and Designing Co.,Ltd.,Guangzhou 510610,China;2.College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China;3.Center for Water Resources and Environment,SunYat-sen University,Guangzhou 510275,China;4.Key Laboratory of Water Cycle and Water Security in Southern China of Guangdong Higher Education Institutes,SunYat-sen University,Guangzhou 510275,China) |
| |
| Abstract: | In this study,based on the 52 years observed data of runoff and sediment load series at a important control station of a sandy river in the south China,the characteristics of the runoff and sediment load and the influence of cascade development have been analyzed by using Mann-Kendall method,coefficient of variation,analogy method and gray system theory.The results show that: 1) The characteristics of the sediment load and runoff evolution of the river have obvious decadal differences,the sediment load and runoff had upward trend before the cascade development,however,those have downward trend after the cascade develop ment,the sediment load has more significant changes than runoff;2) The sediment load and runoff evolution have positively related,the sediment load and runoff are less after the cascade development than before the cascade development of the former,the sedi ment load and runoff had significant changes in 1986 and 2008;3) The cascade development can lead to reducing sediment load and runoff,the cascade development is the main reason for the significant change of the relationship between the sediment load and runoff in 2008 and significantly decreasing of the sediment load and runoff in the mainstream of the river. |
| |
| Keywords: | changes of runoff and sediment load cascade hydropower development double-mass curve |
| 本文献已被 CNKI 等数据库收录！ |
|
