A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Progress report; work of earlier investigators also discussed; direct and relatively simple method is described for measuring variation of longitudinal velocity of sound with pressure in rock; results for samples of stone; with exception of limestone, results warrant anticipation of success when method is applied to actual mine pillars. (see also Can Min J v 60 n 5 May 1939 p 264-71)
Progress report; work of earlier investigators also discussed; direct and relatively simple method is described for measuring variation of longitudinal velocity of sound with pressure in rock; results for samples of stone; with exception of limestone, results warrant anticipation of success when method is applied to actual mine pillars. (see also Can Min J v 60 n 5 May 1939 p 264-71)
Measurement of pressures on rock pillars in underground mines -- I
U S Bur Mines -- Report Investigations
Obert, L. (author)
1939
15 pages
Bibliography
Report
English
© Metadata Copyright Elsevier B. V. All rights reserved.
Measurement of pressures on rock pillars in underground mines -- II
| Engineering Index Backfile | 1940
Measurement of rock pressures in underground mines
| Engineering Index Backfile | 1941
Rock Mass Characterization for Underground Hard Rock Mines
| Online Contents | 1998
Rock mass characterization for underground hard rock mines
| Tema Archive | 1998