Numerical Simulation of Roadway Deformation of Different Cutting Aperture

Abstract:

Using ANSYS finite element analysis software, the crushing effect and wall rock deformation of a small high-pressure jet impacting coal were given numerical simulation analysis. It verified that impacting increased exposed area of coal in punch, providing conditions for pressure relief of internal coal seam and gas seepage. through comprehensive analysis of the rock stress and coal displacement of different roadway models after undercutting, it was determined that aperture size was 4/15 or so of roadway floor length, thus roadway fissures developed full, and maintained rock integrity, in favor of speeding up the face driving.

• Periodical: Applied Mechanics and Materials (Volume 340)
• Pages: 892-895
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.340.892
• Online since: July 2013
• Authors: Xue Min Gong, Jia Yong Zhang, Li Wen Guo
• Keywords: Cutting, Numerical Simulation, Roadway

References

[1] Qin Chao, Guo Liwen, Zhang Jiayong: Numerical Simulation and Analysis of High Pressure Water Jet Coal and Gas Outburst Prevention and Control. Coal. 10, 3-7 (2011)

[2] Zhang Jianguo: Research on primary parameters of high pressure water jet during rock cross-cut coal uncovering. Journal of Chongqing University. 34(11), 117-121 (2011)

[3] Wan Jiwei, Niu Zhengming, Niu Zhunong: Research of water cushion increased resistance effect of jet impact area during the process of high-speed water jet crushing. Chemical, Idustry And Engineering Progrfss. 31(1), 30-34 (2012)

[4] Li Gensheng, Liao Hualin, Huang Zhongwei, et al: Rock damage mechanisms under ultra-high pressure water jet impact. Journal of mechanical engineering. 45(10), 284-294 (2009)

DOI: 10.3901/jme.2009.10.284

[5] Liu Ximing, Zhou Jing, et al: Study on the mechanism of preventing coal and gas outburst by hydraulic cutting. Mining R & D. 24(4), 72-74 (2009)

[6] Lu Yiyu, Ge Zhaolong, Li Xiaohong, et al: Study on main factors of rock breakage with high-pressure cavitating water jets. Journal of Sichuan university (engineering science edition). 41(6), 1-5 (2009)

[7] Lu Yiyu, Zhang Sai, Liu Yong, et al: Analysis on stress wave effect during the process of rock breaking by pulsed jet. Journal of Chongqing University. 35(1), 117-123 (2012)

[8] Zhou Dongping, Lu Yiyu, Kang Yong, et al: Mechanism and application of protection against outburst for abrasive water jet slotting technology. Journal of Chongqing University. 33(7), 86-91 (2010)

[9] Liu Mingju, Zhao Wenwu, Liu Yanwei, et al: Research and application of hydraulic flushing Borehole to quick1y Elim inate outburst. Coal Science and Technology. 38(3), 58-62 (2010)

[10] Wei Jianping, Li Bo, Liu Ming-ju, et al: Maturation on effective influence radius of hydraulic flushing borehole to elim inate outburst and borehole parameters optimization. Coal Science and Technology. 38(5), 39-43 (2010)