Forecast ezperiment on suddenly eztrusion of deep mine fully mechanized mine head face
In view of the Huainan mining area deep mine Dingji mine fully mechanized mine head face low-index outburst suddenly extrusion the region gas geological feature, mechanism of the suddenly extru sion frictional sliding instability are analyzed. 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 5 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 fore casting non-outbursting accuracy rate is 100％ during 2000m tunnel driving in test area.
eztrusion gas dynamic phenomena mechanism frictional sliding
Yongjiang Zhang Xianzheng Meng Bing Tang Yongjun Xia
Chongqing Branch of China Coal Research Institute, Chongqing 400037,China Chongqing Branch of China Coal Research Institute, Chongqing 400037, China Anhui University of Scien Chongqing Branch of China Coal Research Institute, Chongqing 400037, China
国际会议
重庆
英文
100-107
2009-05-20（万方平台首次上网日期，不代表论文的发表时间）