Study on Technology of Mechanized Mining in Extremely Thin Coal Seam

Abstract

The reserve proportion of thin coal seam in Sichuan Province is as high as 60%, of which the extremely thin coal seam mines with the coal thickness less than 0.6m take up 34.3% in the total number of Sichuan coal mines. Exploiting the extremely thin seam called Xiayuantan in Laoyingyan Coalmine confronts so many problems, such as small working space in coalface, difficulty in transporting, high labor intensity, poor production, and low stoping efficiency. Aiming at these problems, this paper puts forward the conventionally-mechanized coal winning technology, investigates the selection, matching, organization and management of equipment in mechanized mining face. Moreover, it demonstrates the rationality of associated equipment selection, that is, MG100-TP off-pan shearer is suitable for exploiting the extremely thin coal seam mechanically. There are less workers in the mechanized mining face, the raw coal production and the stoping efficiency have been enhanced, the roof condition of workface has been improved,serious injury and any other more serious accidents have been completely eradicated. The technology obtains remarkable economic effects and safety benefits.