Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Shaft 3600 ft deep, divided into five compartments, caved in June 1925, forming crater 116 ft in diam; periphery of crater was dressed down to about 45° and frame of steel girders set to support excavation; details of removal of debris, concreting, retimbering, building up shaft to surface level, and refilling crater around restored shaft. (See also - discussion p 228-30)
Shaft 3600 ft deep, divided into five compartments, caved in June 1925, forming crater 116 ft in diam; periphery of crater was dressed down to about 45° and frame of steel girders set to support excavation; details of removal of debris, concreting, retimbering, building up shaft to surface level, and refilling crater around restored shaft. (See also - discussion p 228-30)
Collapse and recovery of howard vertical shaft, simmer and jack mines, limited
S African Instn Engrs -- J
Craib, R. (Autor:in)
1934
8 pages
Aufsatz (Zeitschrift)
Englisch
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