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Structural Design Data for Concrete Drift Linings in Block Caving Stopes.
NTIS: PB 227 548 :73 pages
The Bureau of Mines has developed structural design data for unreinforced concrete tunnel linings for drifts used in block caving stopes. Design data are given that consist of moment, thrust, and deformation coefficients from which bending, axial, boundary stresses, and structural deformations can be determined at any point on the lining. Data is given for circular, horseshoe, and retangular linings, each with two different thicknesses and subjected to eight different loading conditions for drifts excavated in hard and soft rocks. The structural analyses performed are based on procedures that account for both the structural behavior of the lining and that of the drift and take into consideration deformational interaction that occurs between them.
IH; Report of Investigation;
NTIS Accession No.
NTIS: PB 227 548
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division