Engineers Australia

Rock-falls into water and potential wave damageBaden Clegg Award entry

Matthew Kuo

Abstract

This paper presents the findings of experimental work undertaken to investigate the potential wave damage caused by rock-falls into partially water-filled open pit mines. A particular mine geometry has been used to model the situation in a wave flume, with a modelled rock-fall of 10,000 tonnes. The main findings of interest to the mining industry are: a) transfer of energy efficiency from a rock-fall to the water ranges between 5% and 80% depending on slide impact velocity; b) maximum wave run-up distance up slope is about 40 metres; c) available evacuation times for personnel located at a pumping station within the maximum wave run-up distance is about 37 seconds, which is insufficient.