Category: Implicit modelling

What happens if all your teams are on the wrong page?

By Seequent Civil & Environmental Product Manager Pat McLarin

“If you design something based on out of date information, and perhaps order incorrect materials, the impacts could be cost overruns, scheduling hits or expensive machinery sitting unused.”

Was it version 8 or version 9?

Are your engineers working to the latest 3D model published this morning? Or are they about to make an expensive and time-consuming mistake because they didn’t receive the most up to date revision with that one key alteration?

Version management can be just as complex a process as wrestling with data interoperability – and could even carry more risk.

While geology is generally thought to be static, at least during a construction project lifecycle, our understanding of it will change dramatically as a project progresses.  New data will frequently change the design and details of a project, sometimes significantly. It’s vital to know that everyone involved understands there’s a new geological interpretation and is working from the correct one.

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Leapfrog Works model managed in Central

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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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Can Implicit Modelling transform the civil engineering industry?

“If the only tool you have is a hammer, you tend to see every problem as a nail.”
― Abraham H. Maslow

For years the geologists working on civil engineering and environmental projects have grappled with the challenge of building ground models using tools designed for drafting engineering designs.
Traditional engineering design started by drawing 2D sections, plans and elevations to define a 3D structure, which isn’t practical for natural geological structures which are almost never straight and aligned. Geology is a science rather than an engineering discipline because it models the real world instead of designing man-made structures within it. Geology doesn’t come in boxes, triangles, straight lines or even sophisticated Bezier curves. All of these are simply ways of representing the geology on a computer.

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Implicit modelling – an insider’s guide

Leapfrog software has always set the standard in geological modelling. This began 11 years ago when we pioneered the 3D implicit modelling approach.Implicit Modelling - an insider's guide

3D implicit modelling is now used by all the major mining companies across the globe as well as firms in the groundwater contamination and geothermal industries. It is quickly becoming the preferred method of modelling geological data and we expect this will continue into the future.

Geologists find using implicit modelling software enables quick and efficient creation of 3D models enabling them to explore multiple geological scenarios, communicate complex information and ultimately reduce risk and better inform the decision making process.

But what exactly is implicit modelling?

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Predictions at locations where there are no measurements

By Richard Lane

A key feature problem in geological modelling is how to take scattered measurements and use these to make predictions at locations where there are no measurements. The data may be measurements on the surface, or samples taken from drilling, or channel samples taken while excavating. Figure 1 shows the basic problem. Solving this problem is fundamental to how Leapfrog software works, and it underpins the geological and mineralization models that are produced.

Figure 1: A simple scattered data problem. Estimate the value at the red cross from the blue samples.

Figure 1: A simple scattered data problem. Estimate the value at the red cross from the blue samples.

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Interpolation and anisotropy

By Kirk Spragg

Introduction

In addition to interpolation, Leapfrog provides two tools that give the user control over the continuity of grade in their interpolants. These are the “Global Trend” and the more advanced “Structural Trend”.

The Global Trend can be effectively used to alter the results of an interpolant.  The Global Trend  is suitable to use in situations where the underlying geology implies that grade is continuous in a planar direction over large distances. If this is not the case, and the underlying geology implies that direction of grade continuity varies over space, then Leapfrog’s Structural Trend is a more appropriate tool to use when modelling your deposit or ore body.

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Leapfrog interpolation basics

By Kirk Spragg

Introduction

The Leapfrog software suite uses a mathematical method called interpolation to produce dynamic implicit models.  An interpolation tool, FastRBF™ has been specifically developed by ARANZ Geo. FastRBF™ has revolutionised the way geologists produce geological models, as it dramatically speeds up the process and allows models to be updated dynamically. Although the mathematical details of how FastRBF™ works are somewhat complicated, the basic idea is relatively simple. This blog explains the process using simple examples.

Interpolation is a method that produces an estimate or “interpolated value” of a quantity which is not known at a point X say but is known at other points such as from drillhole data.  With the user’s expert guidance, Leapfrog uses FastRBF™ to “interpolate” or fill in the gaps where there is no data.  This is how Leapfrog creates deposits, intrusions and grade shells from the user’s data. Since FastRBF™ is fast, results can be quickly updated when new data is added, ensuring the implicit model is dynamic.

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