JOURNAL OF FACULTY OF CIVIL ENGINEERING 44, 2023.y., pp. 5-19
ANALYSIS OF THE GROUNDWATER INFLUENCE ON THE CATEGORIZATION OF THE ROCK MASS AND SUPPORT TYPE OF THE ZENICA TUNNEL ON THE ROUTE OF THE VC CORRIDOR| |
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| DOI: 10.14415/JFCE-894 |
| UDC: 624.191.22:624.131.6 |
| CC-BY-SA 4.0 license |
| Author : Bektašević, Ekrem; Mušija, Ahmed ; Gutić, Kemal; Beganović, Sumeja; Čehajić, Dino |
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| | Summary: |
| | The Zenica tunnel is located as part of the highway on the Vc corridor, Ponirak section - southern exit from the Zenica tunnel. The tunnel is a two-tube with a length of about 3.300 meters. During the excavation of the Zenica tunnel, large amounts of groundwater were recorded in several sections in both tunnel pipes, from wet to flowing. During the tunnel excavation, the engineering-geological data on the rocks through which the excavation was carried out was regularly recorded, and on the basis of these data, the RMR classification of the rock mass was determined. The paper presents one of the possible solutions to control the inflow of groundwater during tunnel excavation by making subhorizontal wells and installing self-drilling anchors for the purpose of directing groundwater into drainage pipes or tunnel sides. The main goal of controlling the groundwater inflow is to reduce the impact of groundwater on further tunnel excavation and to modify the category of rock mass (additional benefit), and thus to reduce the unit price of tunnel excavation. |
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| | Keywords: |
| | tunnel, impact, subgrade, rock mass classification, groundwater control |
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