摘要
为从整体上研究岩溶含水系统泉流量对降雨量的响应特征,以贵州后寨典型小流域为例,改进基于一维扩散流的Criss和Winston流量曲线模型(CW模型),使得模型适用于有岩溶管道流等流态的非达西流地区。模拟结果表明:改进的CW模型在流量峰值和峰值后的衰减段都比原模型的模拟精度高,冒水坑28场降雨流量模拟获得平均滞后时间为1.77d,与谱分析计算的滞后时间范围相吻合;通过灵敏度分析发现,参数b对流量的灵敏程度高于参数β且流量变化幅度不同。
In order to simulate the discharge response characteristic, Houzhai karstic water system was taken as an example. TheCriss-Winston model was modified based on the one-dimensional diffusion flow so that the model could be suitable for the non-Darcian flowarea with the pattern of karst conduit flow. The modeling results show that the simulation precision in the attenuation of the peak flow and therecession segment is higher than that of the original model. The average delay time calculated from 28 precipitations at Maoshuikeng Station isconsistent with the result of spectrum analysis. The differences of each rainfall intensity and the underground water level are not reflected byusing the average values of the parameters. The sensitivity degree of parameters b is higher than β , and the amplitude of flow is also differentunder the different parameter combinations.
出处
《人民黄河》
CAS
北大核心
2016年第8期34-37,42,共5页
Yellow River
基金
国家自然科学基金资助项目(41201017)
安徽高校省级自然科学研究项目(KJ2012Z085)
关键词
泉流量过程
岩溶含水系统
CW模型
后寨流域
spring discharge process
karstic water system
C W model
Houzhai watershed
