Mobile Bridge Conveyor Reconfiguration for Open Pit Mining
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Solution Overview
Problem
Current methods for transporting overburden material in open pit mines are costly and impractical as the amount of overburden material increases, necessitating an efficient and cost-effective solution for moving excavated material from its removal location to a desired location.
Innovation Solution
A conveyor system comprising multiple mobile bridge conveyor lines that can be selectively associated with each other to form one or more conveyor lines, allowing material to be transported from one location to another within the mine, with the ability to swap and reconfigure conveyor lines as they approach end walls to maintain efficient material movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If traditional transportation methods (trucks, cross-pit conveyors) are used to transport overburden material, then material can be moved from removal area to another location, but the cost increases significantly as the amount of overburden material increases
Solution Approach 1:
The conveyor system is divided into multiple mobile conveyor units that can be individually positioned and configured. Each mobile conveyor acts as an independent segment that can be moved to different locations within the mine, allowing the system to adapt to varying quantities of overburden material without requiring complete system replacement or expensive infrastructure expansion.
Solution Approach 2:
The conveyor system employs mobile conveyors that can dynamically reposition themselves along the mine perimeter and adjust their configuration based on the current amount and location of overburden material. This dynamic adaptability allows the system to maintain cost-effective operations as material quantities change throughout the mining process.
2Productivity
If fixed conveyor systems are installed to transport material efficiently, then material movement becomes more efficient, but the system lacks flexibility as the mine progresses and overburden material levels change
Solution Approach 1:
Mobile conveyors replace fixed conveyor infrastructure, enabling the system to dynamically reposition and reconfigure as the mine progresses. Each mobile conveyor unit can be moved to new locations and integrated into the conveyor line, maintaining high material movement efficiency while adapting to changing mine conditions and overburden levels.
Solution Approach 2:
The mobile conveyor units are designed to perform multiple functions: they can serve different conveyor lines, be positioned at various mine locations, and accommodate different material flow requirements. This universality allows a single mobile conveyor design to maintain efficiency across varying operational conditions without requiring specialized fixed infrastructure for each scenario.
3Adaptability or versatility
If mobile conveyors are used to provide flexibility, then the system can adapt to changing mine conditions, but the complexity of managing multiple mobile conveyor lines increases
Solution Approach 1:
The system manages complexity by segmenting the conveyor infrastructure into standardized mobile units. Each unit follows similar operational protocols and can be independently controlled, making the overall system easier to manage despite its flexibility. The modular nature allows for systematic deployment and reconfiguration without requiring complex custom solutions for each scenario.
4Productivity
If excavation continues as the mine progresses, then more material can be extracted, but the distance and complexity of material transport increases
Solution Approach 1:
As the mine progresses and excavation depth increases, mobile conveyors can be dynamically repositioned to maintain optimal transport distances. Rather than relying on fixed conveyors that become increasingly lengthy and complex, mobile units can be moved closer to active excavation areas, keeping transport distances manageable even as productivity increases.
Data Source
AI summary
A conveyor system for an open pit mine may include one or more conveyor lines. The conveyor lines are used to transport material from one location in the mine to another location. The material transported may be a waste material, such as overburden material, or coal. The conveyor lines may move from a first end of the pit to a distal second end. When the conveyor lines reach the second end, they may reverse direction and return towards the first end. During this reversal in direction of travel, equipment may be selectively swapped between the conveyor lines. The conveyor lines may include at least one mobile bridge conveyor. Each mobile bridge conveyor may support one or more conveyors that transport the material.