Well water management against emerging mine water
RAG AG is installing a well water management facility at the former Reden underground mine in Schiffweiler, Saarland, in order to pump out mine water. In an EU-wide tender, STEAG Technischer Service won the contract to install the necessary power supply systems in the facility.
The contract covers the supply, arrangement at site, installation and commissioning of three switchgear systems, two frequency converters for speed control, and a system with two transformers and all associated components. The STEAG subsidiary will also supply and install the necessary power and control cables. Construction is scheduled to start in April 2020 and completion is due in October 2020.
Project manager Nino Seelbach is pleased about the large order: “Our many years of expertise in the field of energy plants and networks is paying off once again. That’s precisely why we were able to convince RAG, which entrusted us with this complex and exciting project.” Rainer Borgmann, Managing Director at STS adds: “The fact that our bid was successful in a Europe-wide tender shows that we are also able to compete internationally with our expertise in the field of energy systems.”
Mine water management is one of the long-term liabilities after the end of mining. The rainwater penetrating through cracks and crevices into the deep levels of an underground mine would slowly rise and dissolve sediments and minerals, such as salts, in the rock. In order to prevent contact with higher, drinking water-bearing layers in the soil, water must be permanently pumped out of the closed mine to control the water level. With its technical know-how, STS supports RAG’s groundwater management efforts in the Saarland and Ruhr regions.
Photo: Gerd Wehlack