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Practical Application of Mulsim/bm for Improved Mine Design.
Proc 3rd Conf on the Use of Computers in the Coal Industry WVU Balkema 1986 :209-219
The U.S. Bureau of Mines has developed mulsim/bm, an improved computer program using the boundary element approach for geomechanical analysis of mine plans in single or multiple coal seams. This paper discusses the improved program capabilities and presents an example application of mulsim/bm to analyze a two-lift longwall mining situation where the upper and lower coal seams are separated by a 10-ft rock parting. Assuming completion of mining in two advancing longwall panels, with double-entry gate roads, options are analyzed for locating a double-entry system for the first lower panel headgate entries for retreat longwall mining. The initial analysis uses a one-seam model to obtain rock-mass stress distributions for a plane corresponding to the location of the lower seam. A selected configuration for the lower seam panel entries is then analyzed as a full two-seam problem.
Proc. 3rd Conf. on the Use of Computers in the Coal Industry, WVU; Balkema, 1986, PP. 209-219