MEASUREMEAT OF PALEOTECTONIC RESIDUAL STRESS FIELD BY X-RAY DIFFRACTOMETRY

This treatise has accomplished residial stresses measurement of three dimensions in rock masses in Honghe fracture zone and Qianxi epsilon-shaped structural system, has drawn isopleth and principal stress line maps of macro——residual stresses as well as isopleth map of micro——residual stresses, has evaluated elastic strain energy density fields of aforesaid two kinds of residual stresses in rock masses in these regions and has determined their formed periods. The measurement has been based on orthotropic elastic theory of rock mass and used the x-ray diffraction method.