Report No. : GEO Report No. 367

Report Title : Modelling of Entrainment and Development of an Improved Debris Mobility Modelling Program "2d-DMM (Version 3.0)" (2024), 29 p.

Author : E.K.L. Wong, R.P.H. Law & I. Li

Abstract

This GEO Report documents a literature review of the latest development in entrainment calculation, and the improvements made to the Geotechnical Engineering Office's in-house debris mobility program 2d-DMM with inclusion of a physically based entrainment model. The process of verification of the improved 2d-DMM is also documented. As part of this study, field mapping records of mobile debris flows triggered by the 7 June 2008 rainstorm have been re-visited. Insights into the entrainment depth that could occur in extreme events are also presented in this report.

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