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Journal of Mining Sciences

2019 year, number 6

Optimizing Shearer Web Width in Underground Mining of Gently Dipping Methane-Bearing Coal Seams

A. A. Ordin1,2,3, A. M. Timoshenko4, D. V. Botvenko4
1Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630091 Russia
2Institute of Computational Technologies, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
3VostNII Research and Design Center, Kemerovo, 650002 Russia
4VostNII Science Center, Kemerovo, 650002 Russia
Keywords: шахта, очистной комбайн, шнек, ширина захвата, оптимизация, производительность, скорость подачи, частота вращения, тангенциальные резцы, Mine, shearer, drum, web width, optimization, advance speed, rotation speed, tangential picks


Specifications of domestic and foreign shearers are given. The problem is formulated for optimizing web width of a shearer by the maximum capacity criterion with regard to geological and technology factors. The analytical solution is obtained for the problem using the approximating linear functions of the sloughing factor and the web width. The influences of the optimal web width of shearer are analyzed, and the related recommendations are made. The extremal curve of methane relase from broken coal is shown, and the allowable capacity of face by the gas criterion is tested in longwall 5214-1 in the Yalevky Mine of the Kuznetsk Coal Basin.