Design of an underground connection of two coal mines in Czech Republic

HESE Maschinenfabrik GmbH from Gelsenkirchen, Germany, was awarded a contract in 2013 to undertake a challenging project to design the underground connection between the two mines Karvina and Darkov in Czech Republic. The sole modernization of the mine Karvina was economically not reasonable, resulting in the establishment of a connection to the mine Darkov. The goal of starting with the commissioning on July 8, 2013 was reached on time, although the delivery dates were reduced by two months. Parallel to the assembly, the admission documents for the entire conveyance were produced. A tenfold of the belt safety in stationary operation was needed with reference to the belt strength for the passenger transport. The possibility of a 4Q-operation of the frequency-controlled drive was useful, as the belt was retracted against the transportation direction, making downhill and electrical braking possible.