Fachartikel 03_2019

With the end of German hard coal mining in 2018 the dewatering of the mine working is, from a technical point of view, not necessary any more. Therefore new options arise to redesign the mine water management in the post-mining future. The mine water conception of RAG Aktiengesellschaft, Essen/Germany, includes a reduction of the number of dewatering stations, their conversion ...

According to political guidelines the withdrawal from the coal production in Germany took place at the end of 2018 and with this the retreat from the mine site Ibbenbüren of RAG Anthrazit Ibbenbüren GmbH is currently being carried out. In order to fulfil the purpose of eternity of the mine water draining and to reduce operating costs in the long ...

When a coalfield finally ceases production there will no longer be any operational requirement to continue with the mine pumping and dewatering operations. Switching off the pumps generally results in an increase in mine-water levels. This process can take place very quickly or may even last several years or decades. Rising mine-water levels are an ongoing event in many places, ...

When an opencast lignite mine is closed the artificially lowered groundwater essentially has to be restored to its pre-mining level as quickly as possible. This means taking account not only of the impact that mining operations have had on the water landscape but also of any local infrastructural features and housing developments. The various hydrological problems and responsibilities associated with ...

For the Lausitzer und Mitteldeutsche Bergbau-Verwaltungsgesellschaft mbH (LMBV), Senftenberg/Germany, 2018 was marked by a wide range of activities focused around the planning and implementation of restoration and redevelopment measures, this work being particularly affected by the extreme dry weather, which had an impact on the remediation efforts and on the management of water resources in the Lausitz lignite basin. 2018 ...

Mining is not possible without consideration of the component water. This is coupled to a variety of questions. These include, e. g., dewatering in underground and open-cast/pit mining, the post-mining flooding of open-cast/pit residual holes, the remediation of acidic post-mining lakes, general management and treatment of such acid waters (Acid Mine Drainage – AMD) etc. In relation to the above-mentioned aspects, ...

As the share of energy generation from intermittent renewable sources increases, energy storages become more important. Among various direct and indirect power storage technologies, pumped hydro storage power plants are known as the only proven large-scale storage technology for more than a century. Pumped hydro storage power plants have many advantages: They have a long service life, can store energy ...

The Essen-based company RAG Montan Immobilien GmbH is currently responsible for the management and development of some 8,750 ha of land comprising its own property portfolio along with real estate owned by the RAG Aktiengesellschaft. Since its founding the company has revitalised another 9,260 ha of former mining land and has developed these locations for various uses, ranging from industrial estates ...

One in every two hectares of restored former lignite mining land in Germany is to be found in the Lausitz area, a testament to the skills of mining and restoration specialists. And the active mining industry, in the shape of the current Lausitz Energie Bergbau AG (LEAG), Cottbus/Germany, has played a key part in this work. The company’s remit is ...