The distribution of rocks and their characteristics are the subject of all geological investigations. Our geoscientists are engaged in exploration, resource definition and evaluation. We offer geotechnical and rock mechanic solutions in preparation for mining and/or construction work in countries all around the globe. DMT’s historic link with the German hard coal industry made it possible to develop a large field of specialisation, which comprises resource evaluation of coal fields, exploitation of coal bed methane, sequestration of CO2, underground coal gasification and studies in preparation of the extinction of uncontrolled coal fires. More recently, our interpretative work of seismic and other geophysical data sets has been used for 3D geological models of the underground and evaluations, for example, of geothermal potential.
In the field of natural resources we cover large parts of the commodity cycle, starting from target generation, to exploration and resource evaluation, through to mining and exploitation planning. Geological and block models of ore deposits are three-dimensional in nature and define mineral resources, which form the base for the planning of mining, exploitation and extraction. Geotechnical data are not only fundamental to mine planning and safety, but also essential to assess ground conditions for any large-scale construction, underground or on the surface.
In support of exploratory geological work, we apply leading-edge technology, partly developed by DMT. High-tech equipment used are, e.g., DMT’s optical, high resolution drill core scanner (CoreScan3) for core logging, the optical anchor borehole survey tool for use in roof bolt drill holes, and shuttle drill hole probes.
Geometric and geophysical surveying of boreholes is an integrated part of many geological investigations. Depending on the project, a plethora of parameters can be determined, which might influence the further planning or support the geological database. Borehole surveying might be crucially important in drill holes with significant drill core or chip losses. In addition, in percussion holes structural and geological information can be gained by using optical scanners, visually documenting the geological features along the walls of the drill hole. These images can be interpreted using specialised software. DMT´s borehole equipment is partly explosion-proof and partly able to operate in inclined, even horizontal, boreholes, in which cases, our in-house developed shuttle probes are particularly suitable. It enables us to make directed and cable-free measurements in underground as well as surface boreholes.
Hydrogeology & Water Management
DMT’s ongoing association with the German mining industry, dating all the way back to 1864, includes both geological and hydrogeological activities. This work serves as the basis for a unique range of expertise and broad-based experience. Thanks to the systematic connection with newest developments in both science and information technology, nowadays we are able to offer our customers special advantages in the planning and execution of hydrogeological projects not only in Germany, but also abroad.
We offer individual solutions or deliver partial or complete packages. These may include planning, prediction and execution of water management projects. We cover the entire cycle from expert technical studies to comprehensive ground water management and well-researched assessments of environmental impacts. For these we use not only dedicated numerical models to simulate water flow but also models of geochemical reactions and transport. These can be linked with the more conventional models used in assessing ground and surface water. Specialised proprietary software (e.g. ReacFlow3D, Box3d) has been developed for groundwater and (geochemical) reactive transport modelling. For standard numerical models software programmes like SPRING, FEFLOW, MODFLOW are available.
3D models offer solutions covering pure flow calculations (e.g. for mine dewatering or flooding) to highly complex models of mass transport and heat transport in groundwater – taking into account various substances involved and their geochemical reactions. In the field of geothermal energy, various utilisation scenarios can be simulated on the basis of these geological models and thus insights can be gained into heat exchange, cooling behaviour or flow properties.