English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

For the proper functioning of underground hard coal mines, it is necessary to design properly not only the longwall panels and machines working there, but also the proper transportation routes and the auxiliary mine transport. The auxiliary transport is used to supply consumables, the materials used to protect workings as well as to move the crew to the workplaces. The proper design and maintenance of transportation routes in a proper technical condition has a significant impact on the functioning of the mine and ensuring the operational safety of the working people and the machines as well as on the work effectiveness. Transportation routes are protected by using the yielding roadway support. This support protects against falling rocks and it also plays a role of the system, to which rails being the route of the suspended railway, which is one of the auxiliary transportation means, are fixed. The organisation of the auxiliary transport determines the time needed for the crew to reach the workplace, and thus determines the time of miner effective work, what in consequence affects the production efficiency and mine economy. Therefore, the auxiliary transport should be designed in such a way as to ensure that the crew will reach the workplace in a safe way and in the shortest possible time. So, the safety and the efficiency are two very important features of the auxiliary transport [5, 24]. Along with the changes in the hard coal mining industry, caused, among others, by winning the deeper and deeper coal deposits as well as opening the new mining regions and merger of mines, the distances from the shaft to mining faces and other places of miners’ work are increasing. Suspended monorails are one of the main means of transportation intended for moving the crew to the workplaces. In the light of the legal regulations being in force in Poland, in accordance with the Regulation of the Minister of Energy of November 23, 2016 on detailed r−equirements for underground mining plant operations, the maximum permissible speed of a suspended monorail set during crew movement is 2 ms−1 [15]. Therefore, if the suspended monorail needs to cover several kilometres, the journey time forth and back from the workplace becomes significantly longer. This results in a decrease in the effective worktime and the efficiency of the coal production, which in turn translates into the mine economy [5, 14, 21]. That is why there is a need to search for a method to shorten the time of the crew travel to the workplace. In [27], the authors report that at the İmbat Mining Co. Manisa, located in the city of Eynez in Turkey, by using a conveyor belt to convey people, the time required to reach their workplace was reduced. According to the authors of the cited work, the possibility of moving miners on conveyor belts, in relation to their walking, enabled to save 15 minutes on reaching the longwall Keywords

Virtual prototyping of the suspended monorail in the aspect of increasing the permissible travel speed in hard coal mines