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DMT GmbH & Co KG

Used 3D/4D modelling software:

DMT’s work focuses on the mineral and energy exploration and mining/production market. In this context DMT uses several standard software packages to visualize spatial data from drilling, mapping, seismic surveys or other data acquired during early-stage to advanced projects of feasibility and due diligence studies. The visualization of large data-sets in a 3d environment enables our registered professionals to do profund analysis and consistent interpretation of these data to prepare wireframe and block models of mineralized and domains and other rock units relevant follow-up studies, which allow to state mineral resources in compliance to internationally accepted best practice guidelines and standards.

For resource modeling, DMT prefers to use Geovia Surpac which is a transparent and very flexible 3D modelling software and is very popular in the mining industry. Moreover this software includes CAD Tools to interprete irregular bodies, e.g. veins. The key advantages are multi-z surfaces which allow to interpret and interpolate in very complex structures of folding and faulting, e.g. chemical variations in overturned folds, but also for less complex structures, e.g. slightly folded stratiform deposits.

Surpac allows rapid and smooth incorporation of modelling results into other software packages for, e.g. hydrogeological and geotechnical investigations, mine planning and optimization, operation scheduling.

Geotechnical investigations invest rock type characteristics relevant for mining activities, e.g. compressive strenght, shear strength, abrasiveness or others. Related models are using finite element software packages which investigates the rock deformation caused by mining activities.

Hydrogeological investigations invest rock permeabilities for mine water management or leaching processes (reactive mass transport) and simulate flow processes using finite element software.

Moreover Geovia Surpac has some basic mining tools for open pit and underground mine planning which allow some basic forecasts of reserve estimates.

For comprehensive mine optimisation and detailed mine planning, DMT uses Hexagon Minesight, which is also very popular in the mining industry. This software allows optimisation for a variety of mining methods and transparent and consistent mine planning, scheduling and reserve estimates over the mine lifetime.

For hydrogeological investigations DMT uses next to Spring and DHI Feflow, DMT has developed an in-house software which is built-up on Surpac block modelling called Boxmodel. Box model is a finite element software with a flexible discretisation. This software allows a wide spectrum of investigations re mining, e.g. optimisation of water management systems, dewatering of open pits, mine water treatment, safety scenarios (accidental flooding), prediction of flooding, quality prognosis and the influence on regional ground water situation.

For geotechnical investigations DMT uses next to Rocscience Examine3D, Itasca Flac3D, which is very comprehensive to predict areas of geo-mechanical risks for mining. Both softwares are finite element software.

Other software packages are available for geological modelling and resource estimate to be named Schlumberger Petrel and Paradigm Skua and CAE Datamine, which are similar to Surpac but each with other advantages and disadvantages in geological structural interpretation and resource modelling. Schlumberger Petrel allows sophisticated fault modelling in very complex stratiform deposits including palinspastic investigations to model faults considering chronostratigraphy in sedimentation.

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Recent/ongoing projects:

DMT has done mineral resource and reserve block models for a variety of commodities, metals (basic and precious metals), bulk minerals, e .g. phosphate, solid energy (coal, lignite, oil shale) or geothermal energy. Figure 5 shows the workflow of a typical resource model.

Fig. 1: Interpreted geology (left) and interpolated chemistry (right).

Fig. 2: Example of Surpac block model showing rock types.

Fig. 3: Example of Boxmodel using flexible discretisation for fluid flow simulation.

Fig. 4: Example of fault models in Schlumberger Petrel.

Fig. 5: Work flow of a resource model from data visualisation (top left) to geological interpretation (top right) to density attribution (bottom left) to interpretation of quality parameters (bottom right).

Contact:

Florian Lowicki

DMT GmbH & Co. KG

Germany

florian.lowicki[AT]dmt-group.com