Autor: Skrzypkowski, Krzysztof - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Choice of powered roof support FAZOS-15/31-POz for Vang Danh hard coal mine
Dobór obudowy zmechanizowanej typu FAZOS-15/31-POz dla podziemnej kopalni węgla kamiennego Vang Danh
Autorzy:: Skrzypkowski, Krzysztof
Korzeniowski, Waldemar
Duc, Trung Nguyen
Powiązania:: https://bibliotekanauki.pl/articles/318927.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Przeróbki Kopalin
Tematy:: kopalnia podziemna
Wietnam
obudowa zmechanizowana
underground hard coal mines
Vietnam
powered roof support
Opis:: The article presents the choice of a Polish powered roof support from FAMUR Group for the conditions of one of the hard coal mines in Vietnam. In the analytical calculations, the strength and structural parameters of the rock mass from the Vang Danh mine region were adopted. The longwall face is 93 m long and the thickness of the coal layer is equal 3 m. For the needs of the choice of support, the load of the longwall face determined and the capacity of the powered roof support were determined. On the basis of the permissible roof deflection method, the condition of excavation maintenance was characterized. In the calculations, it was assumed that the condition of using a powered roof support type FAZOS-15/31-POz, except in addition to complying of the working range and permissible value of longwall face inclination, is to ensure proper roof maintenance conditions, which are determined by the index of load capacity of the roof „g”.
Źródło:: Inżynieria Mineralna; 2019, 21, 2/2; 175-182
1640-4920
Pojawia się w:: Inżynieria Mineralna
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Fast, non-destructive measurement of roof-bolt loads
Autorzy:: Skrzypkowski, Krzysztof
Korzeniowski, Waldemar
Zagórski, Krzysztof
Dominik, Ireneusz
Lalik, Krzysztof
Powiązania:: https://bibliotekanauki.pl/articles/178690.pdf
Data publikacji:: 2019
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: expansion-shell bolt
monitoring
non-destructive method
laboratory tests
Opis:: This paper discusses the pull-out laboratory tests and the monitoring of expansion-shell bolts with a length of 1.82 m. The bolts comprised the KE-3W expansion shell, a rod with a diameter of 0.0183 m and a profiled, circular plate with a diameter of 0.14 m, and a gauge of 0.006 m. The bolts were installed in a concrete block with a compressive strength of 75 MPa. The tests were conducted on a state-of-the-art test stand owned by the Department of Underground Mining of the AGH University of Science and Technology. The test stand can be used to test roof bolts on a geometric scale of 1:1 under static and rapidly varying loads. Also, the stand is suitable for testing rods measuring 5.5 m in length. The stand has a special feature of providing the ongoing monitoring of bolt load, displacement and deformation. The primary aim of the study was to compare the results recorded by two different measurement systems with the innovative Self-Excited Acoustic System (SAS) for measuring stress variations in roof bolts. In order to use the SAS, a special handle equipped with an accelerometer and exciter mounted to the nut or the upset end of the rod was designed at the Faculties of Mining and Geoengineering and Mechanical Engineering and Robotics of the AGH University of Science and Technology. The SAS can be used for non-destructive evaluation of performance of bolts around mining workings and in tunnels. Through laboratory calibration tests, roof bolt loads can be assessed using the in-situ non-destructive method.
Źródło:: Studia Geotechnica et Mechanica; 2019, 41, 2; 93-101
0137-6365
2083-831X
Pojawia się w:: Studia Geotechnica et Mechanica
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: Study on some solutions for enlarging the application scope of the fully mechanized longwall coal mining technology according to seam dip angle at underground coal mines in Quang Ninh coalfield
Badanie kompleksowych rozwiązań w celu rozszerzenia zakresu zastosowania w pełni zmechanizowanej technologii eksploatacji węgla ścianowego zgodnie z kątem upadu pokładu w podziemnych kopalniach węgla w zagłębiu węglowym Quang Ninh
Autorzy:: Nguyen Duc, Trung
Korzeniowski, Waldemar
Skrzypkowski, Krzysztof
Pham Trung, Nguyen
Powiązania:: https://bibliotekanauki.pl/articles/318816.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Przeróbki Kopalin
Tematy:: eksploatacja
węgiel
podziemne kopalnie węgla
exploitation
coal
underground coal mines
Opis:: The paper summarizes the applied experience, the technical solutions to limit the adverse effects of slope angle in the mechanized longwall mining at underground mines in the world. The paper proposes some solutions for enlarging the application field of the fully mechanized longwall mining technology according to seam dip angle at underground coal mines belonging to Vinacomin. In the article exploitation methods of coal seams of medium to thick thickness with dip angle above 20° designed for mechanized longwall were presented.
Źródło:: Inżynieria Mineralna; 2019, 21, 2/2; 28-35
1640-4920
Pojawia się w:: Inżynieria Mineralna
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "Skrzypkowski, Krzysztof" wg kryterium: Autor

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język