Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Pavel Zapletal"'
Publikováno v:
Applied Sciences, Vol 14, Iss 12, p 5003 (2024)
This study of the strength and deformation of coal samples was triggered by the need to define the stress–strain characteristics of pillars during room and pillar mining in the shaft protective pillar at the ČSM Mine. It was probably the world’s
Externí odkaz:
https://doaj.org/article/9ad6288c97bc464987012da7e1f70a41
Autor:
Pavel ZAPLETAL, Petra DOSTÁLOVÁ
Publikováno v:
Košická bezpečnostná revue, Vol 12, Iss 1, Pp 122-129 (2022)
Every person with an internet connection leaves digital traces behind during their activities in cyberspace. Sharing texts, Internet communications, photographs, and other files in an Internet environment allows, among other things, websites to coll
Externí odkaz:
https://doaj.org/article/3685a2bfa6a2492ea608a1ac444ee967
Publikováno v:
GeoScience Engineering, Vol 68, Iss 1, Pp 58-69 (2022)
Using CFD, the paper deals with a simulation of all phenomena related to forced-air duct fitted with a fan, with the emphasis on unit aerodynamic resistance and untight air ducts. We created a 3-dimentional model of the system including perforations
Externí odkaz:
https://doaj.org/article/2c387f79fdb84de0879c092a5651a6c8
Autor:
Michal VOKURKA, Antonín KUNZ, Pavel ZAPLETAL, Marek KLIMESCH, Katarína PAULÍKOVÁ, Vít SLÁDEK, Jiří SOBOTKA
Publikováno v:
GeoScience Engineering, Vol 67, Iss 4, Pp 135-143 (2021)
The paper presents an analysis focused on the possibility of using geothermal energy from the Rožná I Uranium Mine through mine water as a heat source. The Rožná I Uranium Mine makes part of the Rožná deposit, whose rock mass cannot be consider
Externí odkaz:
https://doaj.org/article/c52ec06833b74313994a1bf46aa33a77
Publikováno v:
GeoScience Engineering, Vol 65, Iss 1, Pp 37-45 (2019)
For the safety works in the mines, good ventilation is one of the main requirements. For miners’ performance, the subsurface ventilation creates healthier and more hygienic conditions. The mine ventilation has always belonged to the field of mining
Externí odkaz:
https://doaj.org/article/7bd86bc8cc6f4cada265b35926d3d9fa
Autor:
Adam P. Niewiadomski, Grzegorz Pach, Zenon Różański, Paweł Wrona, Dariusz Musioł, Pavel Zapletal, Marian Sofranko
Publikováno v:
Energies, Vol 15, Iss 10, p 3672 (2022)
The article presents the results of research into the influence of the location of auxiliary ventilation devices on the distribution of methane concentrations at the outlet of the longwall in an underground mine. Since this area is crucial from the p
Externí odkaz:
https://doaj.org/article/05e783c2b0ff4f40b6fe5eab17ef226a
Publikováno v:
Rudarsko-geološko-naftni Zbornik, Vol 33, Iss 1, Pp 7-12 (2018)
The further development of coal mining in different countries and in India is connected with many problems. Very serious are emission of gas, sudden outbursts of gas and coal, mine fires, dustiness, spontaneous combustion, methane concentration. The
Externí odkaz:
https://doaj.org/article/f00dc10b3690460b9b765b67e648d293
Autor:
Grzegorz Pach, Zenon Różański, Paweł Wrona, Adam Niewiadomski, Pavel Zapletal, Václav Zubíček
Publikováno v:
Energies, Vol 13, Iss 7, p 1755 (2020)
Reversal ventilation is one of prevention methods against fire hazard in underground mines, but it is not recommended for the mines where methane is present. The authors introduce the new method of reversal and by conducting numerical simulations the
Externí odkaz:
https://doaj.org/article/e17e68b45440446da7e25d76ba02418e
Publikováno v:
Rudarsko-geološko-naftni Zbornik, Vol 28, Iss 1, Pp 47-52 (2014)
The present-day micro-climatic conditions in black coal mines are of such nature that in no mine natural micro-climate conditioning is sufficient any more. The original temperature of rocks grows progressively in dependence on the increasing depth of
Externí odkaz:
https://doaj.org/article/a4af18abf3aa483ca1a42dc2fee6d4c4
Publikováno v:
Rudarsko-geološko-naftni Zbornik, Vol 25, Iss 1, Pp 101-106 (2012)
Rock and gas outbursts still represent one of mining risks that has caused considerable loss of life of mine workers and economic losses. With reference to the fact that outbursts have occurred and will continue to occur, it was necessary to make an
Externí odkaz:
https://doaj.org/article/8eefee90614043afa3f3cc2605862296