Brown Coal Bulletin, 2022 (vol. 62), issue 1
Ecological conversion of the belt conveyor E1 at the Bílina Mines
Ing. David Hirman, Ing. Petr Kunz, Ing. Vladimír Herškovič
Zpravodaj Hnědé uhlí 2022, 62(1)
The article describes a standard belt conveyor and subsequently the possibilities of ecological conversions (reduction of noise and dust) of the belt conveyor and its drive station when using long-distance belt transport to transfer the mined coal from the surface quarry to the coal treatment plant. This is a detailed description of the experimental use of the ABB direct low-speed gearless drive.
Mobile misting device "MARS 1" with RMJ 630 N3
Ing. Vlastimil Moni, Ph.D., Ing. Jaromír Täuber
Zpravodaj Hnědé uhlí 2022, 62(1)
The increased concentrations of dust in the air are perceived as a significantly obstructing element. In the work environment, dust can also cause health risks. The Research Institute for Brown Coal, Plc. has been dealing with the issue of reducing dust in workplaces for many years. As part of its activities, it has introduced and successfully implemented a number of technical innovations in the mining practice, which have successfully prevented the spread of dust from the source to the surrounding environment. The presented article aims to provide summary information on the latest mobile misting device. It also briefly informs about the development...
Hydrogeological regime of groundwater around Lake Medard in 2021
Ing. Petr Valvoda
Zpravodaj Hnědé uhlí 2022, 62(1)
The article briefly introduces the history of filling the Medard Lake and evaluates the changes in the hydrogeological regime of groundwater in its immediate vicinity in 2021. The hydrogeological conditions in the area have been mapped since 2008, when the drawing of mine water from the bottom of the quarry was terminated. The final level of the lake (400.0 m above sea level) was reached in March 2017. Three observation bore holes (MPT13, HG14 and MPT16) were used to assess the groundwater levels around the lake in 2021. The obtained measurement results help illustrate the view of the hydrogeological conditions in the area, which have occurred since...