论文信息 - Modeling arching effets in narrow backfilled stopes with FLAC

Modeling arching effets in narrow backfilled stopes with FLAC

Numerical tools can be very useful to investigate the mechanical response of backfilled stopes. In this paper, the authors show preliminary results from calculations made with FLAC. Its use is illustrated by showing the influence of stope geometry. The results are compared with analytical solutions developed to evaluate arching effects in backfill placed in narrow stopes. Some common trends are obtained with the two approaches, but there are also some differences regarding the magnitude of the stress redistribution induced by fill yielding.

[1] Roy E. Hunt,et al. GEOTECHNICAL ENGINEERING ANALYSIS AND EVALUATION , 1986 .

[2] K. Terzaghi. Theoretical Soil Mechanics , 1943 .

[3] Sven Knutsson. Stresses in the hydraulic backfill from analytical calculations and in-situ measurements , 1981 .

[4] A. J. Valsangkar,et al. Earth pressures on unyielding retaining walls of narrow backfill width , 2001 .

[5] Michel Aubertin,et al. A multiaxial stress criterion for short- and long-term strength of isotropic rock media , 2000 .

[6] Joseph E. Bowles,et al. Foundation analysis and design , 1968 .

[7] A Marston,et al. THE THEORY OF EXTERNAL LOADS ON CLOSED CONDUITS IN THE LIGHT OF THE LATEST EXPERIMENTS , 1930 .

[8] P. S. Longfield. The storage and recovery of particulate solids. : Edited by J.C. Richards. Institution of Chemical Engineers, London, 1966. 182 pp. Price £2.2.0. , 1967 .

[9] L. Bjerrum,et al. Embankments on Soft Ground , 1973 .

[10] Li Li,et al. A general relationship between porosity and uniaxial strength of engineering materials , 2003 .

[11] Stephen C. Cowin,et al. The Theory of Static Loads in Bins , 1977 .

[12] Tikou Belem,et al. Effects of settlement and drainage on strength development within mine paste backfill , 2002 .

[13] Wai-Fah Chen,et al. Limit analysis in soil mechanics , 1990 .

[14] G. E. Blight,et al. Pressures exerted by materials stored in silos: part I, coarse materials , 1986 .