Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Michał Siegmund"'
Publikováno v:
Advances in Sciences and Technology, Vol 16, Iss 5, Pp 261-270 (2022)
The numerical analysis was conducted using the FEM ABAQUS software to establish the impact of various undercut anchor diameters on the rock breakout cone formation. The central focus of the investigations was on the rock breakout prism, which tends t
Externí odkaz:
https://doaj.org/article/6f496f33b61a4f91918998683970e2fb
Autor:
Dominik Bałaga, Marek Kalita, Michał Siegmund, Krzysztof Nieśpiałowski, Sławomir Bartoszek, Piotr Bortnowski, Maksymilian Ozdoba, Andrzej Walentek, Bożena Gajdzik
Publikováno v:
Energies, Vol 16, Iss 16, p 6077 (2023)
Drives in belt conveyors are critical components of the conveyor system, susceptible to various factors that can cause disruptions and energy losses. In underground mining conditions, the risk of drive fires is particularly hazardous. Therefore, it i
Externí odkaz:
https://doaj.org/article/6e2e070df71d41f0a6a20406612fd1a8
Publikováno v:
Advances in Sciences and Technology, Vol 15, Iss 1, Pp 230-244 (2021)
We verify experimentally the recommendations put forward in the International Standards for anchorage in concrete concerning the assessment of the load-carrying capacity of anchors (the pull-out force) embedded in natural rock material. Regarding the
Externí odkaz:
https://doaj.org/article/2067b1e420364829a20133b47c6881b2
Publikováno v:
Materials, Vol 16, Iss 5, p 2010 (2023)
Previously published articles on anchors have mainly focused on determining the pullout force of the anchor (depending on the strength parameters of the concrete), the geometric parameters of the anchor head, and the effective anchor depth. The exten
Externí odkaz:
https://doaj.org/article/3c97e76be1ce4e7aac0118bc61af06b3
Autor:
Krzysztof Kotwica, Grzegorz Stopka, Andrzej N. Wieczorek, Marek Kalita, Dominik Bałaga, Michał Siegmund
Publikováno v:
Energies, Vol 16, Iss 3, p 1402 (2023)
Longwall shearers’ haulage system of the Eicotrack type, used most often nowadays, is presented in this article. Its disadvantages, causing problems with a correct operation of mechanized longwall shearer systems, are discussed. The concept of the
Externí odkaz:
https://doaj.org/article/9ccb98a673a4441c916d161a7f39aa86
Publikováno v:
Maszyny Górnicze, Iss 3, Pp 3-13 (2018)
W artykule przedstawiono innowacyjne rozwiązanie opracowanej w Instytucie KOMAG samoczyszczącej dyszy powietrzno-wodnej umożliwiającej wytwarzanie strumieni drobnokroplistych. Omówiono jej budowę i zasadę działania. Przedstawiono przebieg bad
Externí odkaz:
https://doaj.org/article/b0aca6bc3efa4672859281ca86711efd
Publikováno v:
Materials, Vol 15, Iss 3, p 851 (2022)
This paper presents the idea and provides an analysis of the rock breakout mechanism utilizing an undercut/breakout anchor. The new design is a modification of a standard undercut anchor, which is commonly found in applications involving steel-to-con
Externí odkaz:
https://doaj.org/article/177cab25efad41f581abc3df7c3623e1
Autor:
Dominik Bałaga, Marek Kalita, Michał Siegmund, Zdzisław Klimek, Andrzej Urbanek, Arkadiusz Waloszczyk
Publikováno v:
Maszyny Górnicze, Iss 3, Pp 35-46 (2018)
W artykule przedstawiono projekt instalacji zraszającej NEPTUN przeznaczonej do redukcji pyłu całkowitego oraz respirabilnego na stanowiskach pracy, w zakładzie przeróbczym KWK Bolesław Śmiały. Zaprezentowano efekty prac modelowych oraz omów
Externí odkaz:
https://doaj.org/article/d6fd330588e749878bce3161231868c4
Publikováno v:
Energies, Vol 14, Iss 9, p 2720 (2021)
Longwall shearers operating in the underground mine workings move along the longwall face along the conveyor troughs. The haulage system, which is made up of two kinematic pairs in the form of track wheels installed in shearer movers, cooperating wit
Externí odkaz:
https://doaj.org/article/266b2097d4c04e599bf291c7bb8dd99a
Publikováno v:
Materials, Vol 14, Iss 8, p 1841 (2021)
This paper presents the results of a numerical FEM (Finite Element Method) simulation of the formation of a rock failure zone in its initial stage of development. The influence of rock parameters, such as the Young’s modulus, Poisson’s ratio and
Externí odkaz:
https://doaj.org/article/b8b2d7b1d24646128cad7f7cfca09ff7