It is a software application that uses innovative technology for direct block scheduling. The SimSched DBS aims to maximize the Net Present Value (NPV) of a project deciding, based on an imported block model, which blocks will be mined, when and what the destination of each block is.
It is possible to define multiple processing plants, stockpiles and waste dumps, respecting their capacities. It is also possible to set physical limits or force mining in certain regions by importing surfaces.
As the software has a flexible algorithm, it will be possible to include other restriction types in the future, such as blending for example.
The direct block scheduler allows running a complete schedule directly from the resource block model, with no need to define a final pit, nested pits, pushbacks, cut-off grade optimization and stockpiles as would be required as part of a traditional full scheduling exercise. SimSched DBS will find a mining schedule that aims to maximize the NPV of the project, combining all the steps mentioned and optimizing all the periods simultaneously. Therefore, an experienced professional can test multiple scenarios by modifying parameters and advance other stages of his work, while SimSched DBS performs the entire optimization.
Each mining plan generated by the optimization respects important geometrical parameters, such as a minimum pit bottom width, a mining width and vertical rates of advance, which can be configured specifically for your project. Furthermore, SimSched technology generates surfaces without geotechnical errors. The generated plans are close to the operational reality of the mine, which implies smaller variations in the parameters when ramps are designed.
A block model, in CSV format, including indexes and economic values of the blocks is first imported followed by entering the primary parameters of the model and production restrictions via interface. Upon completion of these steps, SimSched is ready to perform the optimization.
The resulting surfaces will respect the user-defined parameters and a report will be generated with graphics containing the most important indicators.
To demonstrate the usage and power of the software, you can access our demo video here.
|Figure 1: Scheduling results performed by SimSched DBS. A- Optimized schedule, in which surfaces are generated and each color represents a period of mining / At the end of the optimization, production graphs (B), contents (C) and economic results (D) are generated.|
The current version of SimSched DBS suits any open pit mining project that can be modeled with blocks of regular dimensions. If your project has multiple types of rock per block, there are ways to adapt the inputs to handle these cases. SimSched is 100% based on 64-bit technology and has an efficient algorithm, capable of handling tens of millions of blocks without requiring supercomputers or cloud computing.
To date, MiningMath has focused on developing the best algorithms; future versions will introduce more facilities for the user, including the development of plug-ins to mining softwares on the market.
If the model can be exported by dividing all blocks into sub-blocks, then we have a regular database formed only by sub-blocks and SimSched can run it. We perform regular tests successfully using models with tens of millions of blocks. For future versions, we are planning significant efficiency improvements.
Get Amazed, as Simsched DBS costs, currently, much less than you think. Request your risk-free trial license of 100 days and discover our current conditions.
The main difference is that the DBS version considers the impact of money over time: the NPV of the project is maximized considering a discount rate over the periods.
The PO version aims to maximize the undiscounted value of the project: the maximum profit that the project could generate if all the material were mined and processed today, generating an optimized pit that will not necessarily be the best solution, given the simplifications of this mathematical model.
SimSched PO is a simplification of the main algorithm in SimSched DBS and will continue receiving most of the new developments related to SimSched DBS, like blending restrictions.
No. LG is a brilliant algorithm for its time, but none of the new software need to implement it anymore. The technological advances have proven that new methods overcome some barriers that the LG faces. These days, any software that has the same mathematical model of LG implemented will rather implement an algorithm based on maximum flow rate (Max Flow) which can be run tens or hundreds of times faster than the LG. However, both LG and Max Flow have no flexibility to include other important restrictions such as a minimum pit bottom width or blending.
SimSched uses highly recommended technology currently in practice and inside research centers, being what is the most advanced, tested and available when talking about optimization. It was implemented using modern techniques based on mixed integer programming and heuristics. Its mathematical model is more realistic, for considering operational aspects and uses surfaces to return solutions that does not have any geotechnical errors. What in practice is mined are surfaces and not blocks. This type of technology has the flexibility to include other real restrictions, such as blending.
MiningMath Associates provides specialized services for the mineral industry, following the best practices and using innovative techniques. Our multidisciplinary team is capable to assist in different stages of the mineral production process.
Do not waste resources; request SimSched DBS only for the timeframe required by your project. Best for consultants and teams who occasionally use scheduling software.
Request your free license of SimSched Pit Optimizer, the only tool for pit optimization that respects a minimum bottom width during the optimization process and returns a surface without geotechnical errors. Learn more