Dhanawardana, YLC; Siriwardana, HDPM; Henderson, SH; Kumara, HMCP; Indika, KAS; Dharmaratne, PGR; Welideniya, HS; Rohitha, LPS
[Conference-Full-text]
In fractured rock masses, large excavations have an unsupported
stand-up times less than the minimum time required to support the roof after the
excavation. Therefore, the principal objective in the design of a support ...