COMPARATIVE STUDY OF STABILITY IN SHALLOW COVER DEPTH AND DEEPER COVER DEPTH TUNNELS USING 2D NUMERICAL MODELING
This study aims to compare the stability of tunnel structures at shallow cover depths and deeper cover depths by analysing the structural behaviours of tunnels using 2D finite element numerical methods. The data used is secondary data from the Samarinda Tunnel Construction Project. Modelling was...
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| Main Author: | |
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/85521 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | This study aims to compare the stability of tunnel structures at shallow cover depths
and deeper cover depths by analysing the structural behaviours of tunnels using 2D
finite element numerical methods. The data used is secondary data from the
Samarinda Tunnel Construction Project. Modelling was carried out using the RS2
software, applying the Mohr-Coulomb failure criterion, with the assumption that
the material is in a plastic and hydrostatic state. The study results show that the
tunnel at a deeper cover depth (BH-05) experiences greater vertical and horizontal
displacements compared to the tunnel at a shallow cover depth (BH-07). The
arching zone formed in BH-05 is also larger, reaching a height of 2,5 m measured
from the tunnel crown. The conclusion drawn is that the tunnel at a deeper cover
depth has a lower stability potential compared to the tunnel at a shallow cover
depth, especially in moderately weathered claystone. |
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