人民黄河2024，Vol.46Issue(1)：79-84,6.DOI:10.3969/j.issn.1000-1379.2024.01.014
渗透系数非均质场对沙丘尺度潜流交换的影响研究
Study on the Influence of Heterogeneous Field with Permeability Coefficient on Subsurface Flow Exchange at the Dune Scale
摘要
Abstract
In order to study the influence of heterogeneous field with permeability coefficient to the subsurface flow exchange,this study adopted a stochastic first-order analysis method to explore the cross-correlation between hyporheic exchange flux and permeability coefficient,as well as the spatial distribution of velocity variance.The results show that hyporheic exchange flux is positively correlated with permeability coefficient heterogeneity in every part of the streambeds with the high cross-correlation zone near the dunes surface.Ignoring the heterogeneity of the riverbed will lead to greater uncertainty of the flow velocity at the shallow position of the riverbed,in the field,the permeability coeffi-cient of the shallow position of the riverbed should be monitored to reduce the uncertainty of the subsurface flow exchange.关键词
潜流交换/渗透系数/随机一阶法/流速方差Key words
subsurface flow exchange/permeability coefficient/stochastic first-order method/velocity variance分类
天文与地球科学引用本文复制引用
王旭东,苏小茹,韩鹏飞,刘升阳,张锁,朱晓倩,邢朕国,王路军..渗透系数非均质场对沙丘尺度潜流交换的影响研究[J].人民黄河,2024,46(1):79-84,6.基金项目
国家自然科学基金资助项目(42202269,42302280) （42202269,42302280）
国家能源集团科技项目(GJNY-21-129) （GJNY-21-129）
