Study on Suddenly Extrusion Mechanism and Forecasting of Deep Mine Fully Mechanized Mine Head Face

Yong Jiang Zhang

doi:10.4028/www.scientific.net/AMR.225-226.216

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 225-226Study on Suddenly Extrusion Mechanism and...

Study on Suddenly Extrusion Mechanism and Forecasting of Deep Mine Fully Mechanized Mine Head Face

Abstract:

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.

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Periodical:

Advanced Materials Research (Volumes 225-226)

Pages:

216-219

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.225-226.216

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Online since:

April 2011

Authors:

Yong Jiang Zhang

Keywords:

Extrusion, Frictional Sliding, Gas Dynamic Phenomena, Mechanism

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References

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