Fachartikel 2020

Due to the shaft itself and the use of the shaft specific conditions arise for the rehabilitation of old shafts. The shaft construction companies have to face these circumstances again and again when planning and carrying out the work. Almost always the influences of water and/or rock pressure determine the day-to-day work of these companies. Three case studies of shaft ...

The Federal Society for Final Storage (BGE) based in Peine/Germany is commissioned to convert the former Konrad iron ore mine into a repository for low to medium level radioactive waste. The following report deals with the reconstruction and renovation of Konrad 1 shaft including three shaft stations at 3rd, 4th and 5th level, shaft hoisting systems and the headframe including guide ...

In many areas where hydraulic fluids are used, it is important to minimize the fire hazard that can be caused by hydraulic fluids. Whether in steelworks and power stations or in machine tools or underground mining, it may be necessary to use hydraulic fluids with improved fire engineering properties, so-called flame-retardant hydraulic fluids, in order to prevent the formation and ...

The term “gas outburst” is in use worldwide for a variety of types of sudden emission of big volumes of mine gas, at which a differentiation concerning the causes of their occurrence is not carried out in many cases. As a consequence, it is often not possible to analyse the causes of these events in the different mining regions in ...

Many solutions have already been developed to prevent dust emissions at special sections of conveyor belt systems and at transfer points. All measures taken for this purpose serve to protect the people working in the surrounding area, to keep the production environment clean and often to provide explosion protection. However, most of the classic dust prevention methods also involve risks ...

The demand for raw materials is increasing worldwide. The reasons are a growing world population and the resulting increase in energy requirements. Mineral or metallic raw materials are needed for an increasing number of electronic devices such as mobile phones, headphones and batteries. The global energy transition also will not make progress without rare earth elements or metals such as ...

In our society there is a lack of acceptance for domestic mining. From the former glorification of technical skills, today an environmental hype has developed which condemns any intervention in nature, regardless of whether it is necessary or not. Measures for mining, for the environment and for the preservation or creation of good living conditions are therefore required. The solution ...

At the Annual Conference of the Society for Mining, Metallurgy and Exploration (SME) in February 2020 in Phoenix, Arizona/USA, the debate on the term “Social Licence to Operate” was a focus. The title of the keynote session of the annual conference was: “The Executive’s Role in Tailings Management: Preserving our Social Licence to Operate”. In view of the recent accidents ...

Projects for the extraction of raw materials are often at the focus of public attention. This does not (any longer) concern solely the large opencast lignite mines, but is more and more true as well of other opencast mines such as larger and smaller wet gravel pits or quarries and even small dry mining projects. The “power of public opinion”, ...

Nature and species conservation play an increasingly important role in approval procedures for mining developments and their acceptance by the public. This has led to an increasing amount of technical statements in approval procedures led by the -mining authorities. In contrast to other development projects, mining creates a succession of special – usually short-term – habitats, starting without vegetation and ...