Modelling overfolded surfaces using two sets of polylines

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Its Tip Tuesday! Today’s post comes from our GEOVIA GEMS™ Product Manager, Justin Meade.

If your geology has highly deformed strata, you might have run into problems when modelling overfolded surfaces, where the fold rolls past the vertical and then tucks back under. Many applications find it difficult to model surfaces where the surface appears in the vertical direction multiple times. This is where the power of GEMS solid modelling can help, by using two sets of lines to model the fold and providing control in two directions. This ensures GEMS knows exactly what is happening in multiple directions at once, and provides fine detail across the surface, with minimal digitising.

This new powerful functionality is easy to use. Create your first set of lines using contour lines along the surface of the plane. Then create the control lines to link these all together by digitising two feature lines, joining all section ends that you just generated using the contour lines.

From here it is as simple as running the function Create Surface from 2 Sets of Polylines. Make sure your triangulation category is set to be a Seam Surface and click “OK” to generate your folded surface.

I hope you have fun with this functionality, and remember if you’d like additional help learning the tools in GEMS, please contact your local office or look on our website to locate the next Geological Modelling training course.

Be sure to check back next Tuesday for more Product Tips & Tricks.

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When mining companies seek to increase mine productivity, they turn to Dassault Systèmes for technology and services. It is home to world-renowned and award-winning mining solutions and to industry thought leaders who are pushing the boundaries of what’s possible in mining, through the GEOVIA brand. The largest global supplier of mining software, GEOVIA delivers comprehensive solutions in all major mining centers in more than 130 countries at over 4,000 sites.
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