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Keywords: excavation
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Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-011
... the economical down side related to the ore write offs in pillars. reservoir geomechanics Raasakka ore domain Modeling & Simulation Finland Johansson excavation Tampere stress measurement Reservoir Characterization Upstream Oil & Gas stability extension pillar international symposium...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-014
... Abstract In situ rock stresses are directly associated with the stability of underground openings and thus the state of in situ rock stress is a crucial factor for the design of underground excavations. The consequences of the rock stresses are rock deformation and rock failure. Concerns have...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-061
... Abstract At Outokumpu Chrome Oy Kemi chromite Mine, Finland rock mechanical problems caused by rock stress occur in unfavorable geotechnical conditions. Maximum rock movements are about 10 to 20 cm. This has led the need to repair the rock support and re-excavation. A research program...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-022
... Reservoir Characterization Raasakka Rock stress elevation tunnel Upstream Oil & Gas borehole excavation steel liner length powerhouse excavation reservoir geomechanics Finland Johansson Symposium stress reduction international symposium groupe qualita inc borehole tf-376-14...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-038
... rail transportation rock mechanical analysis knowledge management hydraulic fracturing Fracture Zone Raasakka Tampere reservoir geomechanics displacement underground train station excavation Roundhouse Symposium international symposium Reservoir Characterization ground...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-060
... Abstract Excavation of long deep tunnels through adverse ground conditions by shielded TBMs requires thorough rock stability analyses to evaluate the possibility of entrapment of the machine. This refers to the assessment of ground pressure and displacement in tunnel walls. For this purpose...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-055
... Abstract A method to back calculate stress state change was developed in Dynamic Control of Underground Mining Operations (DynaMine) research project. The purpose of this method is to provide real-time estimates of the stress state change caused by excavation. In this paper the method...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-025
... Abstract Rantatunneli is a project of moving highway 12 into a tunnel in the city of Tampere. The excavation work was finished in the summer 2015. The tunnel will be operational in 2017. The twin tunnel will be the longest highway tunnel in Finland with the length of 2.3 kilometres...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-059
... prediction slenderness bologna university structural geology rockburst strength value loading University Rock mechanics specimen excavation Carrara marble Italy exploitation Rock Stress and Earthquakes Xie (ed.) © 2010 Taylor & Francis Group, London, ISBN 978-0-415-60165-8 Studies...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-024
... ABSTRACT: The Skaland mine is a graphite mine in Senja island, North of Norway. The mine is located in a granite rock (possibly be Migmatite). The owner of the mine – Leonard Nilsen and Sons (LNS) – plans for a new excavation profile, and the stability of the excavation needs to be checked...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-004
... rock stress may bring forth additional difficulties in rock support design. It is crucial to take into account the in-situ rock stress in designing of the shape and orientation of underground works and selecting of excavation methods and rock support. With a number of examples of real projects...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-104
...Rock Stress and Earthquakes Xie (ed.) © 2010 Taylor & Francis Group, London, ISBN 978-0-415-60165-8 Second fine inversion of regional in-situ stress field considering the excavation disturbance effects of pilot tunnel G.Q. Chen State Key Laboratory of Geohazard Prevention and Geoenvironment...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-055
... of these phenomena disclosed during the excavation of the auxiliary tunnels and the underground testing sites. Based on these data, the multi-methods integration analysis is carried out to estimating the regime, orientation and magnitude of the in-situ stress at this site. The analysis indicates that the accuracy...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-111
.... Hast) first carried out the work of earth stress measurements in the Scandinavian Peninsula. Reservoir Characterization lithosphere back-analysis method application structural geology displacement earthquake prediction excavation stress measurement Upstream Oil & Gas calculation...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-051
...Rock Stress and Earthquakes Xie (ed.) © 2010 Taylor & Francis Group, London, ISBN 978-0-415-60165-8 Features of in situ stress in a crystallized batholith and its influence on the rockbursts of tunnels J.Q. Ma College of Highway, Chang an University, Xi an, China ABSTRACT: During the excavations...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-001
... ABSTRACT: The variability of in situ rock stress is discussed in relation to different scales: the tectonic/regional scale, site scale, excavation scale, borehole/measurement scale, and microscopic scale. The factors causing the stress variability are rock inhomogeneity, rock anisotropy...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-081
... evaluation by means of the overcoring method related to an white marble alpine underground quarry is reported in this paper. The stress measurements were made on the walls of two new underground rooms, excavated to increase quarry exploitation, and they involved a comparison of the values obtained utilizing...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-091
... of the excavated radius, the stress level, and the nonuniform stress field of the tunnel with UDEC technique. The growth curves of the energy dissipation quantity and the energy dissipation ratio were concave with stress level increasing and the non-uniform stress field aggravating. The growth curve of the energy...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-096
... ABSTRACT: Excavation induced stress change is a significant and considerable factor to drive the brittle failure in the underground opening. Rockburst, as a type of brittle failure, has became a great threat to the construction of mining, traffic tunnels, hydropower station etc. With Hoek...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-103
... in the vicinity of existing underground caverns, which have to be adequately considered in order to estimate the natural state of stress. 1 INTRODUCTION Release of the state of stress is often the most relevant action during the excavation of an underground work, and it can affect the location and orientation...

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