Optimization of Longwall Face Parameters for Thick Methane-Bearing Coal Seams at the Sokolov Deposit in Kuzbass
A. A. Ordin1, A. M. Timoshenko2, D. V. Botvenko2, A. A. Meshov3, M. A. Volkova3
1Institute of Computational Technologies, Novosibirsk, 630090 Russia
2VostNII Science Center, Kemerovo, 650002 Russia
3SUEK-Kuzbass, Leninsk-Kuznetsky, 652507 Russia
Keywords: шахта, угольный пласт, фракционный состав, сорбция, метановыделение, скорость подачи, производительность, очистной комбайн, Mine, coal seam, fractional composition, sorption, methane release, feed speed, productivity, sheare loader
Abstract
The technical and economic feasibility of increasing the length of longwall 5003 in Yalevsky Mine to 400 m and raising output per face to 70 thou t per day in mining thick coal seam is substantiated. It is found that from the condition of maximum annual profit of the mine, the optimal longwall length is 450 m, and the variants of the longwall lengths of 400 and 512 m are equivalent. The methane release calculations show that at the indicated length and production output of the longwall, it is predicted that methane concentration in return ventilation air is 0.53%, which means no gas criterion constraints.
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