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Keywords: back analysis
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Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-048
... material, a loading facility and a recording system for pressure, flow rate and stress σ m applied to the cell. At each stage of loading, seepage tests were carried out at various input pressure p n of gas. By the stationary measured flow rates σ mn , using the back analysis, the empirical permeability...
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 Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-153
...… Additionally, stress measurements are performed at specific points and are usually subjected to high scatter. It is therefore important to complement these measurements with back analysis at a larger scale (Kaiser et al. 2000), in order to gain insight into the in situ stress field in a specific area. This...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-156
... based on artificial neural network that was able to regressive analyzing of displacements in future Survey Convergence station projects in every time of monitoring. In back analysis algorithms, for example, with a large number of correct answers received and produce plans with a problem. If properly...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-117
... and 100m long. This proceeding focuses on the study case of this failure through the use of back analysis techniques to estimate the causes of the collapse. A FLAC3D finite difference model was implemented to investigate this quarry failure in which the complex geometry of the quarry was considered...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-151
... displacement seam subsidence ground deformation metals & mining back analysis operation radar interferometry Competidora seam eastern slope intensity reflector mining operation Rock Engineering and Rock Mechanics: Structures in and on Rock Masses Alejano, Perucho, Olalla & Jiménez (Eds...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-147
... method is very important in keeping stability on the low-wall part of coal mining. This study focused on determining material properties on bedding contact using back analysis method. This method is required when geo-mechanic testing result using laboratory testing can't be conducted with some reason...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-153
... values were issued from back analysis of displacements measurement performed in the same site. The horizontally deflection of the retaining system was measured using three vertical inclinometers. The experimentation results are simulated by numerical calculation using finite elements code. 1...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-197
... occurred. After that event, the authors have performed the study involving back analysis. Two circumstances were quite evident and should have been accounted. The failure took place after prolonged heavy rainfalls. Furthermore, a contractor has changed a technology of excavation during the construction...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-160
... Abstract This paper addresses the performance analysis of an optimization algorithm from the field of evolutionary computation, namely an Evolution Strategy, in back analysis to evaluate the geomechanical parameters of the formation surrounding an underground structure. The algorithm is first...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-161
... and the initial state of stress resulted from previous studies, which included stress measurements and a global analysis of the results. The calculated and measured displacements along the complete excavation sequence were compared and, by using a back analysis process, the elastic moduli of the rock...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-124
... stresses, locked stresses of tectonic origin, topography and other complex geological conditions. To obtain the deformation modulus of rock mass, except from insitu measurements, back analyses based on monitoring data are often carried out. Direct approach from the back analysis is based on iterative...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-011
... Characterization northern apennine olistostrome coli Upstream Oil & Gas strength parameter matrix structural geology brown failure criterion rock mass reservoir geomechanics back analysis lab test tunnel bimrock Hoek Italy clayey matrix complex formation Rock Mechanics for Resources...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-072
... roof collapse intersection rock mass behavior metals & mining back analysis joint element stress field tensile strength Quintner Limestone Switzerland pillar Rock Mechanics for Resources, Energy and Environment Kwas´niewski & ydz ba (eds) © 2013 Taylor & Francis Group, London, ISBN...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2010, June 15–18, 2010
Paper Number: ISRM-EUROCK-2010-197
... applicability of the developed back analysis technique combined non-linear programming and unsteady heat conduction analysis by finite element method. At first, the field measurement and its results to investigate temperature changes within the ground are demonstrated in this paper. Next, the thermal...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2009, October 29–31, 2009
Paper Number: ISRM-EUROCK-2009-083
... integrity displacement measurement result Upstream Oil & Gas tunnel tube Wellbore Design back analysis support system element excavation rockb deformeter tunnel zone sediment Reservoir Characterization limestone Engineering kova�ević underground excavation konjsko tunnel back...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2009, October 29–31, 2009
Paper Number: ISRM-EUROCK-2009-090
... Abstract The excavation of the Power House Cavern (PHC) for the Siah Bishe Pump Storage Project was accompanied by an extensive monitoring program. The gathered monitoring data was evaluated and used as a basis for the back analysis—special emphasis was put on the extensometer measurements...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2005, May 18–20, 2005
Paper Number: ISRM-EUROCK-2005-019
... control the rock mass response and check the validation of the assumed properties of rock mass used in design. Back analysis of the data obtained through the instrumentation of phase I revealed that the rock mass parameters used in the analysis have been appropriate. In order to analyze the caverns in...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2005, May 18–20, 2005
Paper Number: ISRM-EUROCK-2005-005
... in the rock mass were made by the reinforcements from rock bolts and multilayered reinforced sprayed concrete (shotcrete). During the works execution monitoring system for the support system behavior was established. This enabled to obtain the data necessary for the stress-strain back analysis of the...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2002, November 25–27, 2002
Paper Number: ISRM-EUROCK-2002-025
...STOCHASTIC AND GENETIC OPTIMIZATION BACK ANALYSIS OF INITIAL ROCK STRESS WEIY A XU, SHIJUN LIU & ZHONGMING JIANG Institute ofGeotechnics, HoHai University, Nanjing, 210098, China wyxu@hhu.edu.cn C.F.LEE, L.G.THAM & Z.Q.YUE The University of Hongkong, Hongkong J.F.SHAO LML, EUDIL, Villeneuve dAscq...

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