Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Roof supports based on sprayed concrete
Cement and sand mixture is projected from nozzle at velocity of 100 m/sec and cover walls of underground working with 2-3 cm coat of concrete combined with steel arches, roof bolts, and reinforced concrete.
Roof supports based on sprayed concrete
Cement and sand mixture is projected from nozzle at velocity of 100 m/sec and cover walls of underground working with 2-3 cm coat of concrete combined with steel arches, roof bolts, and reinforced concrete.
Roof supports based on sprayed concrete
Krepi na osnove nabryzg-betona
Voronin, V.S. (Autor:in) / Krakhin, N.S. (Autor:in) / Shilkin, P.I. (Autor:in) / Pustovalov, A.L. (Autor:in)
1962
6 pages
Aufsatz (Zeitschrift)
Russisch
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