Numerical Simulation of Surface Deformation Due to Caving in an Iron Mine
This paper presents a case study and discussion concerning land surface deformation induced by underground mining in an iron ore mine. The ore excavation was from mining depths of -360 m to -850 m in the western region of Chengchao iron mine. The ground deformations were studied by numerical modeling in FLAC software. Back-analysis of measured surface subsidence was used to calibrate the mechanical parameters of the rock mass used in the numerical model. Then, the rock movement and failure state were analyzed for different mining depths. The displacement angle and the caved angle of the rock were predicted, and predictions were made of the expected degree of damage to nearby surface facilities. The modeling shows that significant damage caused by underground mining should occur to buildings around the western ventilation shaft No.l and the service shaft. Only minor damage is expected around the new auxiliary shaft and the skip shaft. No damage is expected near the western ventilation shaft No.2.
FLAC Software Land Surface Deformation Sub-Level Caving Numerical Modeling
SONG Weidong TAN YuYe Dwayne D. Tannant
School of Civil and Environmental Engineering, University of Science and Technology Beijing, 100083 School of Engineering, University of British Columbia - Okanagan, Kelowna, V1V 1V7, Canada
国际会议
2010 International Conference on Mine Hazards Prevention and Control(第二届矿山灾害预防与控制国际学术会议 ICMHPC)
青岛
英文
146-156
2010-10-15（万方平台首次上网日期，不代表论文的发表时间）