Excavation through saturated decomposed granite by multiple headings with vacuum drainage
Matchett, J.M. and Pringle, L.W.,Civil Engineer in South Africa, 30, 179-183 (1988),
publicationName = "South African Institution Of Civil Engineering (SAICE)",
issn = "0009-7845",
abstract= "The initial 150 m of the second bore of the Du Toitskloof Tunnel was driven through soft decomposed granite by a method of multiple headings with vacuum drainage. By comparison, excavation of the soft-ground section of the first bore was done by ground freezing."
language="English",
type="Journal Article"