Discharge through a permeable rubble mound weir

Kohji Michioku, Shiro Maeno, Takaaki Furusawa, Masanori Haneda

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


The hydrodynamics of a rubble-mound weir are theoretically and experimentally examined. This type of weir is considered to be environmentally friendly, since its permeability allows substances and aquatic life to pass through longitudinally. By performing a one-dimensional analysis on a steady nonuniform flow through the weir, discharge is described as a function of related parameters, such as flow depths on the up- and downstream sides of the weir, porosity, and grain diameter of the rubble mound, weir length, etc. A laboratory experiment is carried out to determine the empirical coefficients included in the analytical model. The theoretical solution of the discharge is compared with the experimental data to verify the analysis. It is confirmed that agreement between theory and experiment is satisfactory for a wide range of flow conditions. The present study makes it possible to apply the rubble mound weir for practical use as a discharge control system.

Original languageEnglish
Pages (from-to)1-10
Number of pages10
JournalJournal of Hydraulic Engineering
Issue number1
Publication statusPublished - Jan 2005


  • Discharge coefficients
  • Open channel flow
  • Permeability
  • Porous media flow
  • Rockfill structures
  • Weirs

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Water Science and Technology
  • Mechanical Engineering


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