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A New Method of Measuring in-situ Stress

A New Method of Measuring in-situ Stress
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Methods of in situ Stress Measurement

1997
Compared with other rock mass properties, rock stress is a difficult quantity to measure. As pointed out by Leeman (1959), ‘It is impossible to measure stress directly since, in fact, it is a fictitious quantity. It is only possible to deduce the stresses in a solid body from the results of measurements using some indirect method’.
Bernard Amadei, Ove Stephansson
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In Situ Stress Measurements in Austria

1980
In situ stress measurements were made at 6 locations in Austria, which were chosen in such a fashion as to yield information on the neotectonic stress in the country. Because of a strong influence of the Alpine topography, it was necessary to apply finite-element calculations for the interpretation of the field results.
F. Kohlbeck, K.-H. Roch, A. E. Scheidegger   +2 more
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Analysis and modelling of holographic measurements of In Situ stress

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1988
Holographic in situ stress measurements were made at five azimuths at a single depth in a horizontal borehole in a mine pillar. For the first time, all six components of the stress tensor were determined by this technique. The stressmeter data indicate a vertical stress of −10.2MPa (compressive), in good agreement with the predicted vertical stress for
Smither, C. L., Schmitt, D. R., Ahrens, T. J.   +2 more
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Hydraulic fracturing for in situ stress measurement

Journal of Mining Science, 2016
It is experimentally found that shut-in pressure conforms with the fracture initiation pressure if the fracture surfaces are uniformly loaded by fluid. The article shows that equaling minimal stress and shut-in pressure in local fractures results in overestimates.
S. V. Serdyukov, M. V. Kurlenya, A. V. Patutin   +2 more
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In‐Situ Stress Measurements in Singapore

Chinese Journal of Geophysics, 2012
AbstractIn the year 2008 and 2009, in‐situ stresses were measured in 18 boreholes by the hydraulic fracturing method to determine the present‐day stress state of the shallow crust in Singapore, which provide key parameters for the design and construction of underground tunnels and data for the study of world stress environments.
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In Situ Stress Measurements in Italy

1980
Most of the in situ natural state-of-stress measurements have been carried out in Italy at the sites of large underground hydroelectric powerhouses and at the sites of important mines. The method successfully used was in all cases based on the measurement of the deformations caused by the stress release on the bottom of boreholes.
Sandro Martinetti, Renato Ribacchi
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The in situ measurement of the intrinsic stresses in nanofilms

Nanotechnologies in Russia, 2010
A method for the in situ measurement of intrinsic stresses in nanofilms is described. It is based on measuring the cantilever beam deflection during the vacuum deposition of thin films. Magnetron sputter deposition is used in this work. In order to determine the cantilever beam deflection, the capacity of a capacitor composed of a stationary plate ...
G. P. Egorov, A. A. Volkov, A. L. Ustyuzhaninov   +2 more
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Deep in-situ stress measurements by hydrofracturing

Tectonophysics, 1975
Abstract Hydrofracturing is a recently developed in-situ stress-measuring method. It consists of hydraulically pressurizing a sealed-off interval inside of a borehole until fracture initiates. The fracture is then extended by additional pumping of fluids from the surface.
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In-Situ and Ex-Situ Measurement of Stresses in Environmental Barrier Coatings

Volume 2: Ceramics and Ceramic Composites; Coal, Biomass, Hydrogen, and Alternative Fuels
Abstract Ceramic Matrix Composites (CMCs) offer a step improvement in temperature capability over the current best high temperature super alloys for gas turbine applications. Silicon Carbide (SiC) based CMCs react with water vapor at temperature and therefore need an Environmental Barrier Coating (EBC) for protection against the water ...
Hans Hudyncia, Jun Shi, Weizhou Li, Xiaodong Li   +3 more
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