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Keywords: stress measurement
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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-2016-003
... structures. The direct techniques utilize boreholes and assume that the surrounding rock behave elastically. However, the acoustic emission (AE) method can be used as a direct stress measurement method as it is less costly and it can be performed under well-controlled conditions in laboratory once sampling...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-006
... conduit and a powerhouse complex located about halfway in the conduit and 500 m below ground level will be constructed. For design of the underground cavern and hydraulic pressure tunnel, several in situ stress measurements were carried out, using hydraulic, overcoring and flat jack techniques...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-010
... Abstract This paper describes three-dimensional numerical stress modeling of the LKAB Malmberget mine and stress calibration of the model, using the results from newly conducted stress measurements at the site. A detailed model of the mine, comprising 18 orebodies, was setup for analysis...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-001
... Upstream Oil & Gas variation stability Reservoir Characterization McKINNON Finland Johansson lntematlonal symposium orientation geological structure seismic event ln-5hu rock stress stress condition stress measurement interaction structural geology information characteristic...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-004
... mines, at depths ranging from 600 meters down to 2,000 meters below surface. Stress measurements were carried out using standard CSIR triaxial 'hollow-inclusion' and biaxial 'doorstopper-type' measurement cells. In-situ 3D stress tensors were computed. Increasing with the depth of measurement...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-002
... recommended by the International Society for Rock Mechanics (Haimson and Cornet, 2003). hydraulic fracturing correspond complete stress determination Reservoir Characterization Situ stress Determination initiation stress measurement stress field Magnitude Symposium hydraulic fracture...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-013
... reservoir geomechanics Upstream Oil & Gas Raasakka rail transportation orientation Tampere city centre Rock stress Reservoir Characterization ground transportation stability analysis horizontal stress Rock Stress Measurement international symposium parking cavern construction...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-011
... are used to estimate the stability of the extension. The simulation results are compared to the current mining environment and studies above level 500 in order to evaluate the conditions in the deeper mining environment. An extensive stress measurement program has been initiated and will be in role...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-015
... Abstract The Norwegian University of Science and Technology (NTNU) and the Foundation for Industrial and Technical research (SINTEF) located in Trondheim, Norway have since the late 1960ies developed equipment for in-situ rock stress measurements, including 2-D and 3-D overcoring and hydraulic...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-026
... hydraulic fracturing normal stress hydroelectric project rock mass Upstream Oil & Gas Finland Johansson proceedings fracture stress measurement principal stress Reservoir Characterization flow rate borehole Symposium Injection Rate critical pressure reservoir geomechanics...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-061
... concerning tunneling in difficult rock stress conditions has been started at the Kemi mine. The results from the rock mechanical simulations are compared to the measured displacements. Input data for the rock mechanical simulations are rock stress measurements, Q' classification from drill holes and drifts...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-031
... Abstract Although stress measurements have been conducted in numerous locations in the ONKALO facility located in Olkiluoto, the prevalent trend of the maximum horizontal stress has yet to be defined to an extent where it is acceptable. As Posiva is responsible for the safe deposition of spent...
Proceedings Papers
Toshinori Nayuki, Tatsuya Tanaka, Kenichi Ando, Koji Oka, Naoki Nishizaka, Yuichiro Shimoguchi, Hiroshi Ogawa, Kazu Saito, Kiyotoshi Sakaguchi, Masaharu ltamoto
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-056
... Abstract Several rock stress measurement techniques have been proposed by different research groups. Due to factors that cannot be visually confirmed, such as for instance rock type, geological structure and heterogeneity, the applicability and accuracy of the different measurement techniques...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-037
... and laboratory measurement techniques have been proposed. For scientific deep-drilling projects, the combined application of borehole methods and core-based methods is suitable to obtain a complete stress tensor and to enhance the reliability of the stress measurement results. As a corebased method, a simple...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-027
... Finland Johansson application stress measurement recovery curve interpretation Abstract In situ stress measurements based on the recovery principle, commonly called overcoring techniques, consist in calculating stresses under strain gauge rosettes using recovered strains at borehole walls...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-028
... circumference stress measurement principal stress Abstract In the overcoring process, strain changes measured during stress relief are used to calculate the in situ stresses. During analysis, multiple measurements of the axial strain are usually averaged to provide a single valued estimate...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-048
... Abstract In-situ rock stress measurement was carried out in the Kamaishi mine of lwate prefecture to quantify the variation of the shallow crustal stress field associated with the 2011 Tohoku-oki earthquake. Stress measurement was conducted by the Compact Conical-ended Borehole Overcoring...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-053
... pressure pr stress measurement in-situ stress measurement Symposium fracture equation Abstract Hydraulic fracturing technique is a measurement method of in-situ rock stress. This technique has the highest track record for techniques used in sub 1000 mater. This technique is comparatively...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-029
... to the Pohang EGS research site, which is the first of its kind in Korea. The in-situ stress estimation analysis was conducted at an exploration borehole, EXP-1, which is about 1 km in depth. Three hydraulic fracturing stress measurement tests were conducted at around 700m depth. Several borehole breakouts...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-044
... Abstract Stress measurements using anelastic strain recovery (ASR) method were carried out at the first offshore gas production test site in the eastern Nankai Trough, Japan. Since the ASR method was applied to unconsolidated samples for the first time, laboratory experiments were executed...
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