Roof Support Selection Using Computer Simulation.
Ch 34 in 23rd Appl of Computers & Operations Res in the Min Ind SME PP 338-342 :338-342
The control of mine roof is of vital interest in underground coal mining, not only for reasons of safety, but also to avoid the high costs of cleanup, resupport, and production losses that can result from roof falls. The difficulty in determining roof stability minewide is due in large part to the broad variation of geologic and structural conditions that typically exist throughout a mining area. To ensure a stable roof over the entire mine, support systems must be selected to minimize the possibility of failure. The magnitude and cost of the support selected is a tradeoff against the cost of the number of falls that can still occur after it is installed. Because of the large number of variables involved in analyzing and optimizing roof stability versus support, a digital computer simulation was selected to find a cost-effective solution to roof support design. A total cost approach is used that includes the actual cost of the roof support as well as the cost of the roof fall in terms of resupport and loss of production. A monte carlo simulation program called rocsim (roof control optimization cost simulation) has been developed for determining the optimum roof control system and design layout for underground room-and-pillar mining.
OP; Final Contract Report;
Ch. 34 in 23rd Appl. of Computers & Operations Res. in the Min. Ind. SME, PP. 338-342
Univ. of Arizona (G1175151-5123)