Solutions to estimate the excess PWP, settlement and volume of draining water after slurry deposition. Part II: Pervious base

Auteurs

Jian Zheng, Department of Civil, Geological and Mining Engineering, École Polytechnique de Montréal, Research Institute of Mining and Environment (RIME UQAT-Polytechnique), Succursale Centre-Ville, C.P. 6079, Montréal, H3C 3A7, QC, Canada
Li Li, Department of Civil, Geological and Mining Engineering, École Polytechnique de Montréal, Research Institute of Mining and Environment (RIME UQAT-Polytechnique), Succursale Centre-Ville, C.P. 6079, Montréal, H3C 3A7, QC, Canada
Yu-Chao Li, MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Department of Civil Engineering, Zhejiang University, Hangzhou, 310058, China

Type de document

Études primaires

Année de publication

2020

Langue

Anglais

Titre de la revue

Environmental Earth Sciences

Résumé

It is a critical concern to properly manage the risks associated with the stability of tailings and dredge sludge dams. This requires the knowledge of the pore water pressure (PWP) within a slurried material during and after the deposition. The evaluation of the PWP can also help to estimate the settlement, which is important for the water management and design of the storage facility. An analytical solution based on the Gibson model has been proposed by the authors to evaluate the excess PWP during the slurry deposition. However, there is no solution available to estimate the excess PWP and volume of draining water after the end of slurry deposition. In this paper, a new solution is proposed to evaluate the PWP, settlement, and volume of draining water after the slurry deposition on a pervious base. The proposed PWP solution is partly validated by numerical modeling with SIGMA/W and laboratory results. The influence of the consolidation coefficient and filling rate on the distribution and evolution of PWP is analyzed. The solution development for estimating the excess PWP, volume of draining water and settlement after slurry deposition on an impervious base has been presented in a companion paper (part I). © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.

Mots-clés

Drainage, Travail dans les égouts, Work in sewers

Numéro de projet IRSST

2013-0029

Citation recommandée

Zheng, J., Li, L. et Li, Y.-C. (2020). Solutions to estimate the excess PWP, settlement and volume of draining water after slurry deposition. Part II: pervious base. Environmental Earth Sciences, 79(11), 275. https://doi.org/10.1007/s12665-020-09014-2