The concept of scheduling in XPAC is the distribution of mining blocks over time (subject to quantity, quality and physical constraints). Each database and stores unique data for your project, for example, the:
| • | main database stores the details of your mining blocks |
| • | calendar database defines the length of the time periods |
| • | schedule setup is used to define the quantity and quality constraints. |
The process of scheduling can be divided into three phases, namely definition of the schedule constraints, selection of the scheduling sequence and generation of the schedule results.
The main difference between the various forms of scheduling in XPAC is the scheduling sequence. The scheduling sequence is the order in which the mining blocks from the XPAC database are scheduled.
| • | utilises a scheduling sequence supplied by you. The mining blocks may be selected manually or graphically to form a sequence or an XCM may be used to create a sequence based on simple logic (e.g. mine strips in numeric order going down through the seams). |
| • | The uses schedule constraints to develop a scheduling sequence itself, though the constraints are defined by you. The constraints may include multiple grade targets, grade tolerances, mining block precedences and capacity constraints. |
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While Input Path Scheduling is available with standard XPAC licences, you must have a special licence to use the AutoScheduler.
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Two examples of Input Path schedules have been developed to guide you through the process. The steps to generate a simple schedule show the minimum requirements, while the steps to generate a detailed schedule include all Input Path scheduling facilities.
