MiningMath

MiningMath

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Easily integratable to your preferred package through CSV files

Data Validation

Author: Mima 316 views

Running an optimization for complex projects with several constraints may demand hours only to validate if the formatting has been done properly. Therefore, we present here an efficient workflow to structure your project. It is important to mention that you can run each topic of this content individually at any time you find suitable, but, we strongly recommend you to take it step by step to understand the main idea of the process

The next pages use the example below within Marvin Deposit and aim to exemplify the following set of constraints:

Constraint Value
Processing capacity
10 Mt per year
Total movement
40 Mt per year
Sum of processing hours
4,000 per year (detailed estimate of the plant throughput)
Vertical rate of advance:
150m per year
Copper grade
Limited until 0.7%
Minimum Mining Width
50m
Minimum Bottom Width
100m
Restrict Mining Surface
Surface-RM-offset-400m.csv
Due to a processing plant in the area
Fixed Mining (Stockpiling)
0.9$/t
Rehandling cost (Stockpiling)
0.2$/t

Table 1: Set of constraints example.

Validate it First

In order to validate your data and cut its runtime, we strongly recommend running MiningMath Full with a bigger production capacity than the expected reserves. Thus, you will get and analyze results faster. This execution also generates the topography surface so that you can create a force or restrict mining areas.

Example:

  • The expected life of mine vs production rate: 35-year project producing 10 Mt per year.

  • Expected reserve: 350 Mt.

  • Set up a scenario with 1,000 Mt in the processing plants per period without stockpiles and any other constraint.

  • Timeframe: Years (1), since it would all be processed in 1 period.

Questions:

  • Did the scenario run properly?

  • Are most of the positive economic values from the process inside this surface?

  • Is the mining happening in reseanable areas?

  • Is there a reasonable number of periods of life of mine?

Figure 5: Scenario's set up
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