Report No. : GEO Report No. 200

Report Title : The 25 August 2003 Rockfall on Slope No. 7SW-C/C362 at Route Twisk near Tsuen Kam Interchange Tsuen Wan (2007), 48 p.

Author : Maunsell Geotechnical Services Limited

Abstract

This report presents the findings of a review of a rockfall incident (Incident No. 2003/08/0170), which occurred on a soil/rock cut slope (No. 7SW-C/C362) at Route Twisk near Tsuen Kam Interchange, Tsuen Wan. The incident involved the detachment of about 8 m³ of rock blocks and the displacement of a further 8 m³ of rock fragments. Most of the detached rock blocks landed on an intermediate berm and about 0.5 m³ of rock debris was deposited on the pedestrian pavement at the slope toe. The pedestrian pavement was temporarily closed as a result of the incident. No casualties were reported.

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