Structural analysis of a mechanized LHD trench undercut caving system.
Rock Mechanics: Contributions and Challenges: Proceedings of the 31st U.S. Symposium, June 18-20, 1990, Colorado School of Mines, Golden, Colorado. Hustrulid WA, Johnson GA, eds., Brookfield, VT: A.A. Balkema, 1990 Jan; :537-544
This U.S. Bureau of Mines paper presents results of stress analyses to investigate the effects of elevated trench drifts on the structural stability of rock mass zones surrounding a production draw drift utilizing a mechanized load-haul-dump (lhd) trench undercut panel caving system. A two-dimensional boundary-element mine stress model was developed and used to predict the locations and the extent of damaged rock mass zones in the vicinity of the draw drift with and without elevated trench drifts. Borehole TV camera surveys were conducted at a mine-monitoring site to observe material damage that occurred during 3 months of mine development and production activities. Qualitative agreement was achieved between the disturbed material zone locations detected from the surveys and the damaged zones predicted by the model.
Structural-stability; Stress-analysis; Structural-failure; Boundary-element-method; Boreholes; Rock-mechanics; Mines-excavations; Shear-stress; Structural-analysis; Mining-engineering; Ground-control; Ground-stability; Models; Monitoring-systems; Monitors; Qualitative-analysis
OP; Conference/Symposia Proceedings
Rock Mechanics: Contributions and Challenges: Proceedings of the 31st U.S. Symposium, June 18-20, 1990, Colorado School of Mines, Golden, Colorado