..., with RQD 100 values filtered from the data. Results indicated that the in situ stress field is interacting with brittle deformation zones unless an unrealistically high fault plane cohesion of 6 MPa is considered. With more realistic parameters interaction is apparent up to a depth of ca. -350 m...

... angle and cohesion. The results shows that the pressure distribution in the boreholewall decreases with permeability orthotropic coefficient increasing between 0° and 45°, whereas it increases between 45° and 90°. Collapsed pressure increases with non-uniform in-situ stress coefficient, hole size...