Physical clogging of soil filters under constant flow rate versus constant head

Lakshmi N. Reddi, Ming Xiao, Malay G. Hajra, In Mo Lee

Research output: Contribution to journalArticlepeer-review

59 Scopus citations


In this study, the differences in soil filter clogging are evaluated under two operating conditions: constant head and constant flow rate. Whereas filters placed around well screens and leachate collection systems are subjected to a constant flow rate, filters in earth dams and pavement drainage systems operate under constant or slightly varying heads. In this study, the experiments revealed similar permeability reductions with respect to time in both cases; however, the permeability reduction under the condition of constant head occurred in much fewer pore volumes than under the condition of constant flow rate. Self-filtration appeared to be greater under the condition of constant head. The physical clogging model developed for the conditions of constant flow rate and constant head showed good qualitative agreement with experimental observations.

Original languageEnglish (US)
Pages (from-to)804-811
Number of pages8
JournalCanadian Geotechnical Journal
Issue number3
StatePublished - Jun 2005

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Geotechnical Engineering and Engineering Geology


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