Study on Suddenly Extrusion Mechanism and Forecasting of Deep Mine Fully Mechanized Mine Head Face
In view of the Huai Nan mining area deep mine Dingji mine fully mechanized mine head face low-index outburst suddenly extrusion the region gas geological feature, analysis mechanism of the suddenly extrusion frictional sliding instability. The research gain sensitive index critical value drilling bits S and depth of hole coefficient S′, drilling gas inrush initial velocity q and attenuation coefficients Cq, its innovative index S′ the forecast enhanced the rate of accuracy take the ground stress as the leading role low- index outburst. The results show that the forecasting non-outbursting risk rate is 87%, and the forecasting non-outbursting accuracy rate is 100% during 2000m tunnel driving in test area.
Helen Zhang, Gang Shen and David Jin
Y. J. Zhang "Study on Suddenly Extrusion Mechanism and Forecasting of Deep Mine Fully Mechanized Mine Head Face", Advanced Materials Research, Vols. 225-226, pp. 216-219, 2011