1-20 of 344
Keywords: tunnel
Close
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-008
... tunnel. The results were unanticipated. Despite the simple geometry that lead to the hypothesis that plane-strain would be valid in the central portion of the deposition holes, results from the 3D analyses showed that plane-strain conditions do not exist at any point along the deposition hole. Therefore...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-059
... Abstract A concern during the design of an undrained tunnel lining is the possibility of a high groundwater pressure occurring behind the lining. If the lining is applied only to the tunnel walls and crown, flow to the invert may cause a pressure alleviation, possibly enhanced by an excavation...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-056
... characterisation. This paper presents a methodology to digitise tunnel rock surfaces using Structure from Motion digital photogrammetry for remote measurements of discontinuities. The proposed method is applied on a 12 m long and 4 m high tunnel section of an underground research tunnel at Aalto University in...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-033
... Engineers and engineering geologists today have an ever increasing toolbox of sophisticated analytical and numerical tools to simulate increasing mechanical detail within the rockmasses surround the tunnels we build. Sedimentary or volcaniclastic layering creates challenges for tunnelling if not...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-027
... Tunnel boring machines (TBM) are widely used in the excavation of tunnels built in hard rock, and the proper operational parameters plays an important role in obtaining high tunnelling efficiency. However, the selection of operational parameters depends on the drivers' subjective perception of...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-030
... rock: Lessons from the Gotschna Tunnel and other tunnels M. Schwalt ILF Consulting Engineers, Zurich, Switzerland markus.schwalt@ilf.com W. Steiner B+S AG, Berne, Switzerland w.steiner@bs-ing.ch Abstract The Gotschna Tunnel is currently being reconstructed. For approximately 10 years, various...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-009
... very difficult ground conditions with transverse topographical changes are abrupt due to the nature of the terrain. The first part of the Murrizi tunnel is located in a sliding area which consists of very weak as well as unstable rocks, and subject to high pore water pressure condition. In order to...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-039
... comparison between the estimated and actual rate of penetration of TBMs in two tunneling projects in igneous and sedimentary rocks. This study shows the potential of regression tree approach to offer more suitable rating of input parameters for this application, if sufficiently diverse database of machine...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-003
... Abstract Rock mass behavior is controlled mainly by weak planes in sedimentary rocks. Geomechanical model tests were conducted for simulating tunnel excavations in horizontal, the 45° and vertical inclined rock strata. Infrared thermography was employed for detecting rock responses during the...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-053
... Abstract The design of underground structures such as road tunnels, railways tunnels, hydro tunnels etc. depends on the data gathered through the physical and mechanical parameters of rocks. These geotechnical parameters of rock play a significant role in the design, safety, stability and...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-108
... Abstract Anomalies in tunnel ahead cause various problems, such as ground settlement, sinkholes and groundwater inflow during tunneling. Therefore, the accuracy of predictions of the location and size of anomalies is essential for safe tunnel excavation processes. TEPS, known as a tunnel-ahead...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-119
... is to shortly introduce the surveying process and interpretation of the 3D optical displacement measurement methodology. Our research is related to geodetic measurements which were carried out in the repository chambers and some exploratory tunnels. The mentioned exploratory tunnels crossed through...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-129
... and are acquired at different scales and from different support shapes and dimension (1D, 2D). We present a 3D modelling approach combining data from borehole logs, outcrop trace maps and tunnel walls mapping. It is applied to the Äspö site in Sweden, for which a large database is available...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-067
...Rock Mechanics and Rock Engineering: From the Past to the Future Ulusay et al. (Eds) © 2016 Taylor & Francis Group, London, ISBN 978-1-138-03265-1 Study on ground behavior considering temporary plastic zone around tunnel face T. Kaneko, T. Ichida & N. Ohara Taisei Corporation, Tokyo, Japan...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-073
...Rock Mechanics and Rock Engineering: From the Past to the Future Ulusay et al. (Eds) © 2016 Taylor & Francis Group, London, ISBN 978-1-138-03265-1 Hard rock TBM performance: Preliminary study based on an exploratory tunnel in the Alps A. Rispoli & A.M. Ferrero Department of Earth Sciences...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-003
... ABSTRACT: Following a mention of the first calculation methods introduced in the mid-19th century for stress analysis of tunnels and underground excavations, the transition from analytical solutions and experimental investigations to numerical methods, in the second half of the 20th century...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-059
...Rock Mechanics and Rock Engineering: From the Past to the Future Ulusay et al. (Eds) © 2016 Taylor & Francis Group, London, ISBN 978-1-138-03265-1 Design and back analysis of NATM tunnels in fractured rock K. Demir & T. Özbay r Yap Merkezi I ns¸aat ve Sanayi A.S¸. and SK Engineering...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-004
... ABSTRACT: Recently it is predicted that around 35 Billion Euros will be spent on tunneling projects in Turkey in few years' time and it is believed that in most cases mechanical excavation will be a key factor in accomplishing tunneling projects in a predetermined time. However, the geology is...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-121
... ABSTRACT: In the course of the design and construction of the Boβler tunnel it is investigated whether and how it is possible to extend the tunnel sections, which are excavated with a tunnel boring machine, in comparison with the lengths determined in the contract. In this connection, the...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-081
... ABSTRACT: In conventional elasto-plastic numerical analyses of underground structures, such as tunnels, caverns, shafts and trenches at a great depth, the structures never collapse, even though large plastic zones appear around the openings. In reality, however, tunnel crowns often collapse...

Product(s) added to cart

Close Modal