STABILITY ANALYSIS OF PORTALS IN TUNNELS
Date Issued
2024-03
Author(s)
Zafirovski Zlatko
Cvetkovski Pero
Gacevski Vasko
Nedevska Ivona
Ristov Riste
Ognjenovic Slobodan
Lazarevska Marijana
Abstract
At this paper will be reviewed stabilization and rehabilitation of cuts and portals of railway
tunnel. Usually, tunnels are performed in rock areas and there is always need from stabilization
and temporary protection during performing and its use. Tunnel's cuts are located at the entrances
and exits of the and stabilization but as most common method is with galvanized wire mesh,
shotcrete and barriers.
During every construction works appears changes in some parts of rocks massive and new
deformations. In order to avoid appearance of deformations, in slopes anchors need to be
installed. Installation of geotechnical anchors is method with drilling, insertion of anchors and
injection. In that way the stabilization of the slope is achieved, where anchors help the rock
massive to keep his load. Anchors with pulling force transmit the force in health rock mass.
Anchors can be used and with other types of protection for better and longer stabilization of
slopes.
In this paper will be reviewed stabilization of cuts and portals of tunnel in Republic of Croatia,
which had need of stabilization. The process consists of making design (schemes) for
stabilization, and then checking and verifying the solutions with software analysis and directly
on site. The purpose of this paper is to emphasize the importance of stabilization of slopes and
of portals too. In Republic of North Macedonia, the use of protective measures is still low, but it
should be increased especially in the area of transport infrastructure.
tunnel. Usually, tunnels are performed in rock areas and there is always need from stabilization
and temporary protection during performing and its use. Tunnel's cuts are located at the entrances
and exits of the and stabilization but as most common method is with galvanized wire mesh,
shotcrete and barriers.
During every construction works appears changes in some parts of rocks massive and new
deformations. In order to avoid appearance of deformations, in slopes anchors need to be
installed. Installation of geotechnical anchors is method with drilling, insertion of anchors and
injection. In that way the stabilization of the slope is achieved, where anchors help the rock
massive to keep his load. Anchors with pulling force transmit the force in health rock mass.
Anchors can be used and with other types of protection for better and longer stabilization of
slopes.
In this paper will be reviewed stabilization of cuts and portals of tunnel in Republic of Croatia,
which had need of stabilization. The process consists of making design (schemes) for
stabilization, and then checking and verifying the solutions with software analysis and directly
on site. The purpose of this paper is to emphasize the importance of stabilization of slopes and
of portals too. In Republic of North Macedonia, the use of protective measures is still low, but it
should be increased especially in the area of transport infrastructure.
Subjects
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