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:Sellers, EJ; Coetzer, SJ; Kamstra, RDate:Oct 2002The primitive stress state is an important input into the design of underground excavations. However, it is well known that the stress state varies considerably from place to place. The aim of this project was to determine the main causes of ...Read more