- Tytuł:
- Tunnel support design by comparison of empirical and finite element analysis of the Nahakki Tunnel in Mohmand Agency, Pakistan
- Autorzy:
-
Riaz, A.
Jamil, S. M.
Asif, M.
Akhtar, K. - Powiązania:
- https://bibliotekanauki.pl/articles/178620.pdf
- Data publikacji:
- 2016
- Wydawca:
- Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
- Tematy:
-
rock mass strength parameters
rock mass classification
FEM analysis
Phase2
tunnel support design - Opis:
- The paper analyses the geological conditions of study area, rock mass strength parameters with suitable support structure propositions for the under construction Nahakki tunnel in Mohmand Agency. Geology of study area varies from mica schist to graphitic marble/phyllite to schist. The tunnel ground is classified and divided by the empisical classification systems like Rock mass rating (RMR), Q system (Q), and Geological strength index (GSI). Tunnel support measures are selected based on RMR and Q classification systems. Computer based finite element analysis (FEM) has given yet another dimension to design approach. FEM software Phase2 version 7.017 is used to calculate and compare deformations and stress concentrations around the tunnel, analyze interaction of support systems with excavated rock masses and verify and check the validity of empirically determined excavation and support systems.
- Źródło:
-
Studia Geotechnica et Mechanica; 2016, 38, 1; 75-84
0137-6365
2083-831X - Pojawia się w:
- Studia Geotechnica et Mechanica
- Dostawca treści:
- Biblioteka Nauki
Artykuł