Author:Sellers, EJ; Klerck, PDate:Oct 2000A series of physical and numerical model tests were performed to investigate the behaviour of the rock surrounding circular excavations under high confining pressures. The aim was to provide information on the formation of fractures around ...Read more
Author:Wright, C; Walls, EJ; De J Carneiro, DDate:Jul 2000Analysis of the refracted arrivals on a seismic reflection profile recorded along the wall of a tunnel at an iron mine near Thabazimbi, South Africa, shows variations in P-wave velocity in dolomite away from the de-stressed zone that vary ...Read more