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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Unearthed: where data will take Civil Engineering next

“The issues that swirl around data, from openness to ethics, and innovation to automation, are vast and varied. We see many different attitudes towards it in the industries we serve.”

The second edition of our Unearthed Report is out now.

The second edition of our Unearthed Report is out now.

How will the smarter use of data transform the Civil Engineering and Environmental sectors in the next few years?

It’s an issue we’ve set out to explore in the latest edition of Unearthed, the technology and innovation report produced by the Seequent team behind Leapfrog Works – our 3D geological modelling software.

You can download the report with all the new features here.

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Geoestima’s Principal Consultant, Orlando Rojas, discusses his testing of Leapfrog EDGE

Geoestima’s Orlando Rojas, a senior resource consultant with over 25 years’ experience, shares his experience using Leapfrog EDGE on a strata-bound copper deposit during the rigorous pre-release programme.

Leapfrog EDGE is designed for today’s resource estimation challenges. How has resource estimation or geostatistics changed in the last 10 years?
I think the biggest change is that deposits have lower grades, which requires more accuracy from resource models and more parameters to predict the throughput and cash flows. We therefore need faster, and more versatile software, with traceable workflows.

Can you tell us about your experience using Leapfrog EDGE?   
We have already completed a geological and resource model using only Leapfrog EDGE. It was a strata-bound copper deposit, we modelled the lithology and a mineralisation envelope. We performed estimations by ordinary kriging and inverse distance using two or three passes and then we compiled the results using the calculation tool. We approached the resource category using the data density function tool, which allows you to map data density within a search.

We conducted geological modelling, grade estimation and classification entirely in Leapfrog EDGE. The resulting mineral resources model built in Leapfrog EDGE conforms to all the industry-standard technical procedures. This confirms that this tool is a viable alternative for us.

The biggest benefit is that it delivers an intuitive workflow from geological modelling to resource estimation, with the added benefits of Leapfrog’s great visualisation and dynamic
updating capabilities. Leapfrog EDGE also allows you to save time exporting and importing files from different software.

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WING Visibility Scholarship applications now open!

In April, we announced Seequent has signed on as the first Global Visibility Partner for Women in Geothermal (WING).

Founded in 2013, WING now has around 1000 members in 48 country teams in geothermal hotspots around the world from New Zealand to El Salvador to Denmark.

As WING’s Visibility Partner, we are proud to be sponsoring this year’s Visibility Scholarship.

Andrea (Andy) Blair, Global Chairman of WING, says: “Women need to be visible, in positions of influence, making decisions and leading, and serving as role models for those wanting to step into these roles too. We thought it was a really good fit to have Seequent as our partner in this area given their Leapfrog Geothermal software, used by many in the industry, provides the tools to enable visualisation and provide clarity.”

Open to all WING members, the scholarship will support speaking at the New Zealand Geothermal Conference in November. Seequent will provide flights, accommodation and conference registration for the successful applicant, chosen from conference abstracts screened by WING and Seequent.

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Seequent’s Singapore event on digital innovation in ground engineering

On 24th May 2018, leaders from Singapore’s civil and environmental engineering industries gathered together at the New Zealand High Commission to join the conversation about digital innovation in ground engineering.

Singapore event - speakers

Speakers Daniel Wallace – Seequent, Michelle Lee – Penta Ocean, and Edward Armstrong – Penta Ocean

With expansive views across the Singapore skyline, invited guests and speakers came together to network, discuss and engage. The presentations were spearheaded by Seequent’s General Manager for Civil and Environmental, Daniel Wallace, who shared Seequent’s vision of the future. Daniel explained how Leapfrog Works, a revolutionary solution to understanding, visualising and communicating ground conditions, is the only 3D sub-surface modelling solution specifically designed for the engineering sector and as such addresses many challenges costing the industry time and money.

To showcase Leapfrog Works in action, special invited guests from Penta-Ocean Construction Company Ltd, explained how they are using Leapfrog Works to better understand ground conditions in Singapore.  Speakers Michelle Lee, BIM Manager and Edward Armstrong, Senior Engineering Geologist, took the audience through their VDC (Virtual Design & Construction) roadmap and explained how Leapfrog Works enabled them to reduce risk both financially and in Health and Safety, ultimately advancing how they complete geological modelling.

“We were delighted that Penta-Ocean accepted our invitation to showcase their recent Singaporean engineering project,” says Daniel Wallace. “The event was a great success. It was a real honour to meet with industry leaders, some for the first time and others we know well, and to be able to also demonstrate Leapfrog Works hands-on in the event’s Discovery Zone.”

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Performing a Jack-knife-Style Analysis Using Leapfrog EDGE

One simple yet effective method for testing estimation sensitivity is to run a jack-knife analysis, wherein a sample or set of samples is intentionally removed from a dataset, an estimation is performed in the location of the missing samples, and the estimated result is compared back to the samples. The tools and workflow built into Leapfrog EDGE make this a simple operation to perform at a block level by comparing the results of two different estimations.

1. Create A Standard Estimator

The first step to running a jack-knife is to create an estimator using all data required. For this example I will use the LMS1 domain from the Leda training dataset, and will be estimating the Zn grades within that volume.

Edit Domained Estimation

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When time is your enemy, you need your software on your side

By Seequent Product Manager PJ Hollenbeck

All projects have their challenges, but those with a fast turnaround have a special set of problems and pressures.

A succession of accelerated construction deadlines may call for rapid iteration of geological models to meet the shrinking timelines. You might need to develop multiple hypotheses from the data you have, often in a very short space of time.

That would be ok if the software you were using was built from the ground-up specifically with geologic modelling in mind, but often it isn’t. Instead, you may be relying on tools co-opted from another industry or discipline and not intended for the ‘artform’ of geological modelling. Not only will that tend to make the initial modeling process slow and difficult, but when new data comes in – as it frequently will – it could take days, even weeks to update the model. Meanwhile, the project is already underway and costing money.

3D model

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Collaboration is easier when you can work directly with a range of data sources

By Seequent Product Manager, Pat McLarin

Collaboration is key in the success of any ground engineering or environmental services project.

However, while the teams involved may be keen to share their data, ideas and detailed designs with others on the site, the software they are using may have different ideas.

Human collaboration can be tripped up by the difficulty of getting different data formats to work together. That shouldn’t be the case, though it’s not hard to see why it happens.

Every stage of a project’s workflow requires its own software package. Ground investigations, topological surveys, GIS, engineering designs, geological and geotechnical models will all have their own variations as each specialist area has its own particular outcome to achieve. That will shape the data format, leading, inevitably, to many of those formats being incompatible.

This can make progressing from step to step difficult, costly and frustrating. Technical experts can waste valuable time manipulating data – sometimes manually, sometimes through multiple software packages – and risk losing key information along the way.
Leapfrog Works CPT data

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