Interpretation of failure and fallouts based on numerical modelling of an underground mine stope
This paper presents a case study from the Kristineberg mine in northern Sweden, in which predictions from numerical modelling were compared with field observations. This enabled an evaluation of damage and fallout indicators in the model. An instantaneous cohesion-softening friction-hardening material model was used. The region inside intersected shear bands, which connect to the excavation boundary and with consistently high strain values, can be interpreted as a fallout. The zone of yielded elements failed in shear is greater than the zone of intersected shear bands; hence, yielded elements can be interpreted as damaged rock. This study has also shown that by scaling the damaged rock and creating a v-notch in the roof (similar to the predicted fallout shape), the stability of the excavation is improved.
C.Edelbro D.Sandstr(o)m
Lule(a) University of Technology, Lule(a) Boliden Mineral AB, Boliden
国际会议
香港
英文
1-5
2009-05-19（万方平台首次上网日期，不代表论文的发表时间）