Numerical Analysis of Roof Pre-Splitting Roadway Effect in Incline Coal Seam

Abstract:

Roof pre-splitting roadway is a new technology in roof induced rock burst prevention and control of incline coal seam. With the purpose of increasing rock burst prevention and control effective, FLAC^3D numerical simulation software was used to analyze stress distribution characteristics and roof pre-splitting effect and the layout of the roof pre-splitting roadway parameters. The results showed that the roof pre-splitting roadway changed roof and floor stress distribution, the stress concentration degree is high in the zone of roof and floor around pre-splitting roadway and the two ribs of pre-splitting roadway, which made the roof strength weakened and easy to break, avoiding a large overhang in the process of mining and rock-burst; The roof pre-splitting roadway led to stress concentration in the range of 5 ~ 10 m, roof effective weakening range 12 m, so the distance of two roof pre-splitting roadway should be more than 20m. The research provided the reference basis for rock burst prevention by roof pre-splitting roadway in the incline coal seam group mining.

• Periodical: Applied Mechanics and Materials (Volumes 644-650)
• Pages: 1899-1902
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.644-650.1899
• Online since: September 2014
• Authors: Hua Jin*, Tao Ning, Bo Yin
• Keywords: Incline Coal Seam, Numerical Analysis, Rock Burst, Roof Pre-Splitting Roadway

References

[1] Nishiwaki K, Kagami S. High Frequency Walking Pattern Generation based on Preview Control of ZMP, IEEE International Conference on Robotics and Automation. (2006).

DOI: 10.1109/robot.2006.1642104

[2] Chen Nan and so on. For the field of industrial and highly interconnected, TI launched a new Sitara ARM9 microprocessor. [J]. Global Electronics, 2010 (5) 86-87.

[3] Vision Heading Navigation Based on Navigation Curve [A]. Proceedings 2010 International Conference on Intelligent Computing and Integrated Systems[C]. (2010).

DOI: 10.1109/iciss.2010.5657096

[4] Chen Nan and so on. For the field of industrial and highly interconnected, TI launched a new Sitara ARM9 microprocessor. [J]. Global Electronics, 2010 (5) 86-87.

[5] Jonghoon ZMP Park, Youngil Youm. General ZMP Control for Bipedal Walking. IEEE International Conference on Robotics and Automation. (2007).

DOI: 10.1109/robot.2007.363870

[6] ZHANG Jing, WANG Wanliang, XU Xinli, et al. Hybrid particle-swarm optimization for multi-objective flexible job-shop scheduling problem. Control Theory &Applications, vol. 29, no. 6, pp.30-37, (2012).

[7] NING Tao. Study on Application of Hybrid Quantum Algorithm in Vehicle Routing Problem. Dalian: Dalian Maritime University, (2013).

[8] Tran Quang Tuan, Phan Xuan Minh. Adaptive Fuzzy Model Predictive Control for non-minimum phase and uncertain dynamical nonlinear systems, Journal of Computers, vol. 7, no. 4, pp.1014-1024, (2012).

DOI: 10.4304/jcp.7.4.1014-1024