Activities per year
Abstract
At sequenced tunnel drives, next to the rock mass conditions, the advance rates of the single excavation stages and the moment of ring closure determine the performance of shotcrete linings. Especially in heterogeneous rock masses, the investigation of the optimum ring closure moment resulting in no damage of the lining challenges the engineers. If the ring closure is too early, the lining may experience compressive failure because the building up of ground loads is too large.
A late ring closure may allow for too much tunnel displacement. To investigate the effects of various ring closure moments on the utilization of the tunnel lining and the tunnel crown convergences, this study performs 3D finite element simulations. The results at a specific measuring cross section and for the assumed ground conditions suggest that a delayed ring closure can lead to higher utilizations
compared to an early ring closure.
A late ring closure may allow for too much tunnel displacement. To investigate the effects of various ring closure moments on the utilization of the tunnel lining and the tunnel crown convergences, this study performs 3D finite element simulations. The results at a specific measuring cross section and for the assumed ground conditions suggest that a delayed ring closure can lead to higher utilizations
compared to an early ring closure.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 15th International ISRM Conference 2023 & 72nd Geomechanics Colloquium |
| Subtitle of host publication | Challenges in Rock Mechanics & Rock Engineering |
| Editors | Wulf Schubert, Alexander Kluckner |
| Place of Publication | Salzburg |
| Publisher | Austrian Society for Geomechanics |
| Pages | 2043-2048 |
| Number of pages | 6 |
| ISBN (Electronic) | 978-3-9503898-3-8 |
| Publication status | Published - 10 Oct 2023 |
| Event | 15th ISRM Congress 2023 & 72nd Geomechanics Colloquium - Congress Salzburg, Salzburg, Austria Duration: 9 Oct 2023 → 14 Oct 2023 https://www.isrm2023.com/de/ |
Conference
| Conference | 15th ISRM Congress 2023 & 72nd Geomechanics Colloquium |
|---|---|
| Abbreviated title | ISRM 2023 |
| Country/Territory | Austria |
| City | Salzburg |
| Period | 9/10/23 → 14/10/23 |
| Internet address |
Activities
- 1 Conference or symposium (Participation in/Organisation of)
-
15th ISRM Congress 2023 & 72nd Geomechanics Colloquium
Manuel Winkler (Participant), Paul Johannes Unterlaß (Participant), Thomas Geisler (Participant), Thomas Marcher (Chair), Thomas Frühwirt (Chair), Philipp Dobita (Participant), Mario Wölflingseder (Participant), Vaibhav Shringi (Participant), Alla Sapronova (Participant), Anton Kaufmann (Participant), Manfred Blümel (Participant) & Abdallah Ahmed Fouad Elsayed Soliman (Participant)
10 Oct 2023 → 13 Oct 2023Activity: Participation in or organisation of › Conference or symposium (Participation in/Organisation of)