Queensland Mine Rehabilitation with Civil Contractor Projects

A civil contractor was engaged to manage the rehabilitation of earthworks at a central Queensland mine and enlisted MEC to assist with the project’s design and scheduling. MEC’s role involved conducting a comprehensive analysis to determine the most cost-effective methods for material movement, comparing truck and shovel operations, scraper operations, and dozer push scenarios. The objective was to identify the best fit in terms of efficiency and cost-effectiveness.

The study resulted in a final deliverable that included a detailed schedule outlining the sequence of activities and their durations, ensuring the project stayed on track. It also provided dozer vectors, which are specific paths for dozers to follow for optimal efficiency, and estimates of machine hours needed for each piece of machinery, aiding in budgeting and resource allocation. Additionally, MEC developed landform and haulage simulation models to plan the logistics of earthmoving operations accurately.

The deliverables encompassed topsoil and seeding allocations and requirements, crucial for the rehabilitation process to restore vegetation and stabilise the soil. This included an assessment of the additional material needed to address topsoil deficits, ensuring the rehabilitated land met environmental and agricultural standards. Through this collaboration, the civil contractor and MEC created a robust framework for managing the rehabilitation earthworks efficiently and sustainably.