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Keywords: excavation
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Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-058
... different wedges during cavern excavation. The threshold for the cavern leakage pressure has been assessed during hydrocarbon operation condition. The hydro-mechanical modelling results reveal no significant impact on the cavern integrity comparing to non-coupled mechanical and hydrogeological models. 1...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-007
... system metals & mining upstream oil & gas support design reservoir characterization structural geology rock mass classification system ground condition eurock 2020 rock mass shotcrete excavation ground behaviour model implementation data collection difficult ground condition...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-052
... A place within the rock mass remains supporting stresses in a state of equilibrium; when the excavation is carried out, an empty space is produced, redistributing the stresses and generating a new state of stresses. In some cases, the stresses exceed the strength of the rock, inducing gradual...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-033
... project sites. Site investigation, selection of analysis model and monitoring plan must link to ensure that the mechanics of the sedimentary rock are considered in excavation strategy, support design and monitoring (alert levels and response). Case examples will be discussed highlighting pitfalls and...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-030
... potential around the excavation profile (Fig. 2). Alongside swellable sulphate-bearing rock (anhydrite, gypsum), the rock mass of the Gotschna Tunnel also contains dolomite and phyllite, i.e. relatively "inert" metamorphic clay rock. This geology results in a rather low proportion of swellable sulphate...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-044
... conditions. The numerical geomechanical 3D model of the Zhdanovskoe deposit has been created and the data about the stress state and its changing as the surface and underground excavations are extended have been obtained. The data has been compared with the visual observation findings. It is planned to use...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-009
... construction seriously, but the tunnel is subject to be excavated in weak rock conditions. Nevertheless, 5 months after the tunnel excavation commenced, serious anomalies encountered in the tunnel, and these were showing progressive behaviors. As soon as the anomalies are observed, security measures are taken...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-046
... aggravates mining conditions, threatens the mine stability and increases working hazards. The violent damage mechanisms in deep mines are rock spalling and strainburst in their most severe forms [1, 2]. Strainbursts are considered the most common rockburst type in deep underground excavations [3]. Typical...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-009
... several questions. The main question connected to sustaining the safety of the workers before and after the advance of the mining works has resulted in this study of the prediction of unnatural seismological activity based on data that were collected during and after the excavation of the coal seam. Also...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-040
... it can be somehow limited extraction using longwall face. This method is respectful of the overburden and excavated areas stay stable. The paper deals with the issue of stability and stabilization of coal pillars by using rockbolt support. The problem with this method is currently designing pillars...
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-2017-024
... Abstract Stress concentration is a direct result of stress redistribution around an excavation, that may lead to rock bursting under specific geomechanical conditions. This paper presents a case-study of a rockburst that took place in the shaft station area of the Provence coal mine in...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-132
... Abstract The first underground rock caverns for hydrocarbon storage in South-East Asia has recently been completed in Singapore. The storage capacity of 5 twin-caverns is 1.47 million cubic meters with total volume of rock excavation is about 3 million cubic meters. Geologically, it was...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-077
.... Analysis was conducted across the range of excavation steps undertaken within the underground mining operation. This full-stage analysis provides predictive information on stability of the open pit in terms of rock/slope failure. The output provides benefits in safety and production and gives operators and...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-137
... Abstract A fast computational code is presented that is dedicated for the elastic analysis of three-dimensional excavations and cracks in rocks. The problem is solved on the boundaries that are discretized with a new triangular leaf constant displacement discontinuity element with one...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-119
... fault zones. We have studied the effect of the fault zones on the measured 3D displacements, using the common evaluation and displacement prediction methodologies, and we show the results obtained during the control of the „normality" of the displacements from the underground spaces which were excavated...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-071
... metals & mining strength failure criterion geometry Upstream Oil & Gas criteria rock mass reservoir geomechanics criterion extraction open stope pillar Reservoir Characterization stope crown pillar rock mass behavior excavation Hoek stress state georgieva crown pillar...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-072
...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 Tunnel excavation in low permeability ground: Effect of anisotropy on excess pore pressure L.M. Guayacán-Carrillo & D. Seyedi Andra R&D, Chatenay...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-061
... Igneous complex is 66 000 km 2 and ranges from 7 to 9 km thick. metals & mining Efficiency structural geology Reservoir Characterization Upstream Oil & Gas reservoir simulation resin bolt diameter pre-tensioned tendon excavation shallow bord borehole camera primary support...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-073
..., Università degli Studi di Torino, Italy M. Cardu DIATI-Politecnico di Torino; IGAG-CNR, Torino, Italy L. Brino & A. Farinetti TELT sas, Italy ABSTRACT: Explorative tunnels are one of the best ways to assess the rock quality in the preliminary stage of a long tunnel excavation project: this strategy allows...

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