School Seminars and Colloquia

Equipment Replacement in Forestry Harvesting Operations

ORSUM Seminar

by Matthew Baxter


Institution: Department of Mathematics and Statistics, The University of Melbourne
Date: Fri 17th September 2010
Time: 4:15 PM
Location: Room 307, 3rd Floor, Alice Hoy building, The University of Melbourne

Abstract: While managing forests for diverse and conflicting outcomes requires great care and patience over many years, the largest expense associated with producing timber products is the cost of harvesting. The contractors responsible for this task must invest in several types of expensive harvesting machinery with limited lifespans, with the goal of minimising their operating cost per tonne including machine ownership costs.

We briefly outline the details of the problem and current approaches to it, as described by industry contacts. We describe several Mixed-integer linear models, with varied levels of complexity, developed to make decisions regarding equipment replacement. We show that dispite being independently developed, these models share many underlying assumptions with those created for a similar problem in the Mining Industry by Christina Burt et. al. We also present a decision support tool designed to be used by the industry which uses these models. Finally we suggest avenues for future research into Harvesting Operations.

For More Information: contact: Christina Burt. email: c.burt@ms.unimelb.edu.au