Gas Disaster Governance of Rock Cross-Cut Coal Uncovered in Extremely Inclined Outburst Coal Seam

Abstract:

Due to the complex geological conditions of Nanshan mine east region, the outburst predict index overrun frequently in the process of high-dipping extremely thick coal seam rock cross-cut coal uncovering, this text designed and optimized the front explore borehole parameter to ascertain conditions of coal seam; Optimized gas drainage drilling parameters to improve the rate of extraction, reduced the blank tape; On the basis of the theory of mechanics, derivate the computational formula of minimum safety rock pillars, identified with the minimum thickness safety of rock pillars. Through the above measures, guaranteed debunking coal seams quickly and safely.

• Periodical: Advanced Materials Research (Volumes 962-965)
• Pages: 1147-1152
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.962-965.1147
• Online since: June 2014
• Authors: Hong Qing Zhu, Bei Fang Gu*, Min Bo Zhang, Cheng Yi Yang, Xiang Shen
• Keywords: Predict Drilling, Rock Cross-Cut Coal Uncovering, Safety Rock Pillars, Steeply Inclined Thick Coal Seam

References

[1] Likai Zhu, Tianhong Yang, Hongliang Zhao, etc. The Least Thickness Determination of Reservation Rock Pillar in Crosscut Uncovering Outburst Seam [J]. Coal Mine Safety, 2012, 10 (2), pp.15-17. (in Chinese).

[2] Mingju Liu, Yaocai Tang, Fajun. Serious Prominent three soft, Coal Seam Fast Uncovering Coal Technology Research and Application [J]. Coal Technology, 2010, 4(2), pp.52-53. (in Chinese).

[3] Hailiang Yao, Liang Chen. Rock Cross-cut Coal Uncovering Drainage Gas Borehole Design Method and Application [J]. Coal Science and Technology, 2010, 4 (2), pp.52-53. (in Chinese).

[4] State Administration of Work Safety&State Administration of Quality and Technical Supervision, State Administration of Coal Mine Safety. Prevention and control of coal and gas outburst [M]. Beijing: Coal industry publishing house, 2009, pp.40-41.

[5] Chun-an Tang, Shuhong Wang, Yufang Fu. Numerical Experiments of Rock Failure Process [M]. Beijing: Science Press, 2003. pp.58-59. (in Chinese).

[6] Ortlepp W D. Stacey T R Rock burst mechanisms in tunnel and shafts. Tunnelling and Underground Space Technology. 1994, 9 (1). pp.59-65.

DOI: 10.1016/0886-7798(94)90010-8

[7] K. SATO, Y. FUJll. Source Mechanism of a Large Scale Gas Outburst at Sunagawa Coal Mine in Japan [J]. PAGEOPH, 1989, 129(3/4), pp.325-343.

DOI: 10.1007/bf00874513

[8] Litwiniszyn, J. A model for the initiation of coal-gas outbursts [J]. Int. J. Rock Mech. Min. Sci. Geomech. Abstr. 1985, 22, pp.39-46.

[9] R.D. Lama, J. Bodziony. Management of outburst in underground coal mines. International Journal of Coal Geology, 1998, 35, pp.83-115.

DOI: 10.1016/s0166-5162(97)00037-2