... focal plane solution Turkey stress measurement Rock stress in-situ stress Artificial Intelligence Earthquake stress state Symposium Aydan University AE method Japan in-situ stress measurement inference 7111 lntemational Symposium on In-Situ Rock Stress May 10-12, 2016, Tampere, Finland...

... & Gas normal stress small flat jack test Raasakka Rock stress hydraulic fracturing ln-51tu rock stress borehole stress field stress measurement rock mass US government variation Finland Johansson determination Magnitude international symposium fracture 7th International Symposium...

... mine. reservoir geomechanics stress calibration Raasakka Reservoir Characterization Upstream Oil & Gas ln-51tu rock stress geometry haulage level metals & mining ground surface solver method coefficient machine learning in-situ rock stress stress measurement international...

... 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...

... Abstract Three measurement campaigns were carried out by Natural Resources Canada CANMET Laboratories over the last thirty years within the Red Lake Gold District, Ontario, to determine the magnitude and orientation of in-situ rock stresses on several levels of the Campbell and Red Lake gold...

... 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...

... defined in light of current information available from the current mine studies hence the new stress measurement will give important update to the data. Numerous studies have been previously performed concerning deformations in current mine, rock stress in the mine and multiple forecasts of coming events...

... and the difference between two methods was confirmed to be minimal. Upstream Oil & Gas inflection point Rock stress DRA method vertical stress orientation Finland Johansson Symposium stress estimation Reservoir Characterization overburden stress MPa situ stress ed-j isbn 978-951-758-1kl6-1...

... 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...

... 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...

... international symposium 7th International Symposium on ln-51tu Rock stress May 10-12,2016, Tampera, Finland Johansson & Raasakka (ads) ISBN 978-951-758-806-1 ISSN 0356-9403 ESTIMATION OF ROCK MASS DEFORMATION MODULUS USING THE FRACTURING INTERVAL LOADING Andrey Patulin (andrey.patutin@gmail.com) Institute...

... earthquakes occurred on the boundaries of high- and low-V anomalies in the upper mantle, suggesting that the crustal large earthquakes of the region are related to the upper-mantle structure. These results could be helpful to better understand the rock stress around the source areas. Introduction...

... 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...

... region glaciation Rock stress stress-geology interaction 7th International Symposium on ln-51tu Rock stress May 10-12,2016, Tampera, Finland Johansson & Raasakka (ads) ISBN 978-951-758-806-1 ISSN 0356-9403 STRESS-GEOLOGY INTERACTION MODELLING AT OLKILUOTO Jouni Valli Gouni.valli@kmshakala.fi) KMS...

... Abstract Recent increase of induced seismicity and high rock stresses in the Pyhäsalmi mine have proven the need for an analysis of the seismic data and prediction of hazard. Seismic events and other influencing factors are analysed in order to forecast and quantify the level of induced...

... pillar Finnish Hituran kaivo Rock stress Outokumpu Oy structural geology massive sulphide open pit wall rock international symposium Finland Johansson erkkila annual report internal report 7th International Symposium on In-Situ Rock Stress May 10-12, 2016, Tampere, Finland Johansson...

... 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...

... Upstream Oil & Gas inverse problem borehole Reservoir Characterization Corthesy anisotropic rock stress tensor deformability parameter Raasakka doorstopper technique Symposium strain recovery curve Rock stress international symposium reservoir geomechanics stress component...

... stored along the fault after build-up of the rock stresses. The release produces earthquakes and the seismic waves propagate and attenuate through the model. The earthquakes are simulated under different present day in situ stress conditions and under estimated future glacial cycles of Weichselian type...

..., which will benefit the innovative technology of non-destructive rock stress measurement. Introduction Acoustoelastic effect of rocks, which means the stress--induced wave-velocity change, has wide application in the fields of geoscience, petroleum exploration, and civil engineering (Nur & Simmons...