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Effect of In Situ Stress on some Common Earth Crust Phenomena. Chi-Chi, EarthquakeTaiwanDEPTH: 7 Km7.7 (Richter scale)September 21,1999. Rockburst in underground mine. Borehole failure, Nevada Test Site. Fold. Types of Borehole Stress Estimation Methods . Shallow Overcoring techniques
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1. Calibration/validation of in situ stress measurement techniques,andDetermination of the stress gradient in all three principal directions on km scale. Bezalel Haimson, U. Wisconsin-Madison
Francois Cornet, Institut de Physique du Globe de Strasbourg, France