Description and Application of A Model of Seepage under A Weir Including Mechanical Clogging

Journal of Water and Land Development

BogdanWosiewiczPoznanUniversityofLifeSciences,InstituteofConstructionandGeoengineering,ul.WojskaPolskiego28,60-637Pozna?,Poland¹  tel.[phone]Otherarticlesbythisauthor:DeGruyterOnlineGoogleScholar¹  tel.[phone]EmailOtherarticlesbythisauthor:DeGruyterOnlineGoogleScholar²  ZbigniewSrokaPoznanUniversityofLifeSciences,InstituteofConstructionandGeoengineering,ul.WojskaPolskiego28,60-637Pozna?,Poland²  ZbigniewWalczakPoznanUniversityofLifeSciences,InstituteofConstructionandGeoengineering,ul.WojskaPolskiego28,60-637Pozna?,Poland² 

[1] tel. [phone];Poznan University of Life Sciences, Institute of Construction and Geoengineering, ul. Wojska Polskiego 28, 60-637 Pozna?, Poland

关键词: Keywords: clogging;    numerical model;    seepage;    weir;   

DOI  :  10.2478/jwld-2014-0008

学科分类：农业科学（综合）

来源: Instytut Technologiczno-Przyrodniczego / Institute of Technology and Life Sciences

【 摘 要 】

The paper discusses seepage flow under a damming structure (a weir) in view of mechanical clogging in a thin layer at the upstream site. It was assumed that in this layer flow may be treated as one-dimensional (perpendicular to the layer), while elsewhere flow was modelled as two-dimensional. The solution in both zones was obtained in the discrete form using the finite element method and the Euler method. The effect of the clogging layer on seepage flow was modelled using the third kind boundary condition. Seepage parameters in the clogging layer were estimated based on laboratory tests conducted by Skolasińska [2006]. Typical problem was taken to provide simulation and indicate how clogging affects the seepage rate and other parameters of the flow. Results showed that clogging at the upstream site has a significant effect on the distribution of seepage velocity and hydraulic gradients. The flow underneath the structure decreases with time, but these changes are relatively slow.

【 授权许可】

Unknown