DISCUSSION 'LANDSLIDE RISK MANAGEMENT CONCEPTS AND GUIDELINES'

摘要

The quality of a landslide risk assessment has always been and remains primarily dependent on the extent that the hazards are recognised and understood. Where dealing with natural slopes this requires good geological and geomorphological skills and knowledge of landside types and landslide behaviour, experience and judgement. Developing a sound geotechnical model and understanding failure mechanisms are of prime importance. This means that the quality of the assessment is usually related to the quality and experience of the people carrying out the work and the time and effort spent trying to understand the hazard. Realistic quantification based on knowledge, insight and understanding of the particular site, the region and the hazards in question with open acknowledgement of the uncertainty and judgement involved helps the decision making progress. Unrealistic quantification based on poor understanding of the hazard will be meaningless and misleading, will not contribute to good decision-making and should be avoided. The Landslip Paper appears to be primarily addressed to skilled geotechnical engineers and engineering geologists who have the experience and wisdom to apply the principles outlined. It is not in our view in a form that is readily assimilated by other potential audience categories, such as local government, developers, owners and the like. Once this debate has proceeded to a resolution it may be appropriate to prepare a separate document to clearly outline the recommended processes to clients. The strengths of the Landslide Paper discussed above, in particular the application of risk management principles should help improve slope risk management. We look forward to hearing other opinions on the Landslide Paper and landslide risk management in Australia.