Ground Control Mechanisms in Multi-seam Mining.
Haycocks-C; Karmis-M; Barko-E; Et Al
For Reference Only At Bureau Libraries :328 pages
The objective of this research was to improve the design of underground mines to avoid or minimize the problems caused by the interaction of overlying coal seams. To evaluate past interaction effects and provide guidelines for future mine design, interactive ground control problems were categorized into four areas--pillar load transfer, massive interseam shearing, subsidence, and pressure arching effects. The research was carried out using a two-pronged approach: (1) modeling using finite elements, body-loaded low- modulus photoelastic and brittle models and (2) using results of field studies and detailed analyses of field observations. A review was made of the central Appalachian coalfields and geologic environment. The results of this review are presented in Appendix 1.
CP; Final Contract Report;
For Reference Only At Bureau Libraries
Virginia Polytech. Inst.