- Tytuł:
- Roadway support design based on in-situ stress and its asymmetrical distributions in a coal mine
- Autorzy:
-
Guo, Hongjun
Ji, Ming
Zhao, Weisheng - Powiązania:
- https://bibliotekanauki.pl/articles/218766.pdf
- Data publikacji:
- 2020
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
kopalnia węgla
droga transportowa
transport kopalniany
in-situ stress
the stress in the rock surrounding roadway
the displacement in the rock surrounding roadway
the plastic zone in the rock surrounding roadway
support parameters - Opis:
- Through in-situ stress measurements, stress data were obtained from an auxiliary transportation roadway in a coal mine in Shanxi Province, China. Based on the principles of elastic mechanics and using a generalized plane strain model, the mechanical effects of the in-situ stresses on an idealized roadway were calculated and the distributions of stresses, displacements, and plastic zones determined. Building on this model, the vulnerable zones in the roadway cross section were identified. Ground support specifications were developed and during specification design, comprehensive consideration was given to factors affecting the stability of the rock surrounding the roadway. A scientific and reasonable support scheme was put forward. Practical experience in the coal mine shows the normal forces of anchor bolt and cable, the minimal convergence of roof to floor, and a generally good support in the auxiliary transportation roadway. The support should ensure safe production during its service life. This study provides a new method for designing roadway support systems that can be particularly valuable for high-stress roadways.
- Źródło:
-
Archives of Mining Sciences; 2020, 65, 2; 299-315
0860-7001 - Pojawia się w:
- Archives of Mining Sciences
- Dostawca treści:
- Biblioteka Nauki
Artykuł