In open-pit mines located in regions with high rainfall, the drainage system is crucial to the efficiency of mining operations. Driving effluents out of the pit requires tilting the mining benches in order to direct the water to previously studied collection points. This article explores how mining bank inclination and appropriate methodology can facilitate mining planning and sequencing in open pit mines.
Importance of the Drainage System in Open Cast Mines
In areas with high rainfall, efficient drainage is vital. Accumulated water can compromise the safety and efficiency of mining operations. Therefore, tilting the mining benches to guide water to specific collection points is essential.
However, Designing inclined mining plans for large mines is complex because the traditional block model is not inclined. Here, a new methodology becomes fundamental, simplifying the application of mining planning and sequencing with inclined benches.
Methodology for Mining Planning with Inclined Benches
The proposed methodology uses the pit expansion, an innovative tool for MinePlan software. This tool allows the operation of pits with inclined banks, a necessity in many mines. Based on inclined grids, it makes it easier to obtain the foot, crest and base lines. Elements such as face angle, overall angle, berm width and ramp/slot angle are calculated from the horizontal plane.
For different mine inclination planes, sectorization can be defined and treated individually. This results in predefined areas with different slopes, allowing a personalized approach for each sector of the mine.
After creating and selecting the inclined grids in the pit expansion, you can configure the face angle, general angle and the berm on a plane-by-plane basis. In the same way, the starting point, width and direction of the routes and slots on the inclined plane are defined. This ensures detailed and efficient planning for each section of the mine.
Mining Sequencing and Planning Tools
With the operationalization of the pit completed, the next step is to prepare the sequencing, dividing the pit into mining advance units according to planning.
THE Auto Cut Generation tool is used to obtain horizontal and vertical cuts based on inclined planes. This allows for more accurate and efficient sequencing, aligned with the mine's operational objectives.
Using MINEPLAN for Mining Planning
MinePlan, with its advanced tools such as Pit Expansion and Auto Cut Generation, offers a complete solution for mining planning and sequencing. It simplifies complex processes, enabling mining operations to maintain high efficiency and safety, even in challenging environments.
The adoption of these technologies not only improves drainage management in open pit mines, but also optimizes the productivity and sustainability of operations. With MinePlan, mining companies can plan and execute their operations with greater precision and less effort.
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