Stress state interpretation in light of pressure-solution creep: Numerical modelling of limestone in the Eastern Paris Basin, France

2010 ◽  
Vol 483 (3-4) ◽  
pp. 377-389 ◽  
Author(s):  
Yann Gunzburger
Keyword(s):  
Stress State ◽  
Numerical Modelling ◽  
Pressure Solution ◽  
Paris Basin ◽  
State Interpretation

08.36: Numerical modelling of circular CFST members and assessment of multi-axial stress state effects

ce/papers ◽  
2017 ◽  
Vol 1 (2-3) ◽  
pp. 2128-2137
Author(s):  
Yadong Jiang ◽  
Bledar Kalemi ◽  
António Silva ◽  
José Miguel Castro ◽  
Ricardo Monteiro
Keyword(s):  
Stress State ◽  
Numerical Modelling ◽  
Axial Stress

Some aspects of the mechanics of arching in backfilled stopes

2009 ◽  
Vol 46 (11) ◽  
pp. 1322-1336 ◽  
Author(s):  
Martin Fahey ◽  
Matthew Helinski ◽  
Andy Fourie
Keyword(s):  
Shear Stress ◽  
Stress State ◽  
Numerical Modelling ◽  
Underground Mining ◽  
Computer Code ◽  
Complex Interaction ◽  
Soil Parameters ◽  
Full Spectrum ◽  
Backfilled Stopes ◽  
Key Parameter

In current underground mining using “open stoping” methods, it is common to backfill mined-out voids (“stopes”) using hydraulically placed backfill, which is commonly composed of tailings, to which cement is often added. Knowledge of the stress state within a backfilled stope is required for safe design of drawpoint barricades and for other operational reasons. This stress state depends, inter alia, on the degree of “arching” that occurs, resulting from the development of shear stress between the fill and the stope walls. This paper presents a numerical modelling study of aspects of the arching phenomenon, carried using the computer code Plaxis. The backfill is characterized using the Mohr–Coulomb soil model, and both dry backfill and saturated backfill are considered to completely cover the full spectrum of backfill types that are used in practice. It is shown that even with dry backfill, the behaviour is governed by a complex interaction between the soil parameters. The behaviour is more complex with saturated backfill, with a key parameter being the permeability of the backfill relative to the rate of filling — i.e., whether the backfilling operation can be considered to be “drained” or “undrained” or somewhere between these two extremes.

Numerical modelling of pressure solution in sandstone, rate-limiting processes and the effect of clays

2002 ◽  
Vol 200 (1) ◽  
pp. 41-60 ◽  
Author(s):  
E. Gundersen ◽  
D. K. Dysthe ◽  
F. Renard ◽  
K. Bjørlykke ◽  
B. Jamtveit
Keyword(s):  
Numerical Modelling ◽  
Pressure Solution ◽  
Rate Limiting
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