Month: July 2018

Reporting Resources in Leapfrog EDGE using open pit shells

By Seequent Senior Resource Geologist Carrie Nicholls

In this blog, I will teach you how to use Leapfrog EDGE to report using open pit shells.

You have completed the resource model and now you need to compile the table of resource figures. If there has been mining activity, either historic or present, then the deposit will have to be depleted. In addition, if appropriate and available, you will most likely need to constrain the resources with a resource pit shell and/or underground stope optimisation.

Whether it is an open pit shell or closed volumes, as would be the case with underground mining, the basic procedure will be the same. A ‘Geological Model’ will need to be made to represent the reporting volumes. The estimated grade model as completed in Leapfrog EDGE and the ‘pit’ model will be evaluated onto a block model. This will then be used to report the resources at the cut-offs required. Creating the ‘pit’ model itself is straight forward. Some open pit surfaces may be a little trickier to incorporate, for example if the pit edge daylights it may not be enough to extend to the geological model extents. If it’s not be possible to go back to the mining engineer who made it to extend the pit shell, I’ll show you how to deal with this.

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Keeping on top of the ground conditions in BIM

Leapfrog Works’ latest release – version 2.1 – steps up 3D geological modellings ability to integrate with BIM models, with the inclusion of two key export formats, the BIM Industry Foundation Class (IFC) and Autodesk Drawing (DWG).

The release continues our major development programme to provide a subsurface solution specifically for the Civil Engineering and Environmental industries.

BIM with ground model

Leapfrog Works Project Manager, Pat McLarin, explains, “To date BIM has mainly been focused on vertical infrastructure, with much of the detail relating to design and structural decisions now incorporated into BIM models, even down to minute decisions such as wallpaper. However, the ground conditions on which the entire structure rests have not been adequately included. This means that BIM users do not have a detailed enough vision of how the geology is impacting and could impact on future decisions, exposing projects to risk. And the workflows used to bring geology into BIM have been adhoc and manual and aren’t able to make the best use of the data and the geologist’s full geological interpretation.”

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The Geothermal Modelling Workflow from Conceptual Model to Flow Model

By Seequent Product Director of Energy, Brennan Williams

Based on the feedback from our current Leapfrog Geothermal users over the last 12 months, we have been working to advance the workflow between the conceptual geological model and the numeric flow model in Leapfrog Geothermal.

With the release of Leapfrog Geothermal 3.6, a TOUGH2 flow model with an unstructured grid can now be created, on to which the geological model rock types and also fault rock types are evaluated. The TOUGH2 model can then be exported and run in the flow simulator.

Geological model with faults and wells

Figure 1: Geological model with faults and wells

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