Evaluating the costs of haul road maintenance and rebuilds

The condition of a haul road can significantly affect the performance of a mine from both a cost and productivity perspective. Determining the frequency of haul road maintenance and when to take one out of service to rebuild it can be difficult. Mine engineers walk a fine between squandering money on too frequent service and not enough, which could cause road conditions to deteriorate more quickly.
Another important aspect of haul road management is determining which segments of the haul require the most attention. Looking at several factors such as distance, grade, rolling resistance, the hauler itself along with the desired tonnage, engineers can create models that let them determine were best to make that investment.
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