Fachartikel 2022

The quest for safety for man and machine is becoming increasingly important in mining and tunnelling worldwide. Due to the mechanisation of sinking, tunnelling and extraction work in underground mining and processing, the amount of dust generated in the various work processes has steadily increased – in line with the increase in performance. Although the occupational disease silicosis, which is ...

In Belarus, potash mining has been carried out intensively for about 60 years, so far by the state-owned company Belaruskali in six mines. Since 2011, the privately financed Nezhinskiy mine has been planned in the deposit near Soligorsk, and construction of this greenfield mine started in 2016. The planning from 2011 initially envisaged the sinking of two shafts using the ...

Ventilation measurements and data from several days of underground monitoring were used to record the actual status of the mine climate and ventilation circuit at a rock salt mine. This provided the basis for identifying a number of critical parameters, including the problem of dust collection around boom-type heading machines. This information was then used to determine where potential improvements ...

Many different technical relationships and parameters have to be taken into account for the professional cleaning of dust-laden air. Filtering the dust load from the air requires a fan system to set the air in motion so that it can pass through the filters. In mechanised drivages and conventional tunnelling operations the technical ventilation methods being deployed have to be ...

The U.S. Mine Safety and Health Administration (MSHA) mandates the use of continuous personal dust monitors (PDM) in underground mines to verify compliance with mandatory respirable dust standards. Regulation 30 CFR §70.100 establishes a limit of 1.5 mg/m3 averaged over an eight hour working shift. Miners who work in dusty conditions are required to wear the PDM for several shifts ...

The extraction of rock salt at Heilbronn mine by conventional drilling and blasting is investigated on the basis of three key themes: Tests aimed at adapting the blasting pattern show that higher charging densities at the working faces result in greater efficiency in terms of advance per round and, even when all cost variables have been taken into account, can ...

Heilbronn mine, which is owned by Südwestdeutsche Salzwerke AG, Heilbronn/Germany, has for many years been producing rock salt by both conventional mining and mechanical cutting, the two methods being operated separately. With the rearrangement of the mining sections the mine has now recently managed to combine the two techniques in such a way that staff productivity has been increased, average ...

Dewatering in clay mining is one of the most important tasks in the extraction of raw materials, which have a direct influence on production processes as well as on the environment and water protection. The environmental awareness of the clay raw materials industry is of great importance in the Westerwald and against this background, a framework agreement on the discharge ...

Along with steel, concrete is used as one of the most important materials in shaft construction and is used in almost every job. Concrete is also used as a building material in construction areas such as structural and civil engineering. Only the working conditions in shaft construction are completely different from those in other construction areas such as building construction ...

In the course of the development of new types of drilling rigs for use in the surface and subsurface areas, which has been ongoing since 2017, a large number of concept ideas and resulting application options have been developed. One focus of these developments is the efficient extraction of reef and gangue ore deposits. The challenge is to develop the ...