Stability Prediction of Surrounding Rocks and Optimum Design of Roof-Bolt Parameters in Deep Roadway

Abstract:

In order to forecast the stability of deep roadway and optimize the parameters of bolts, the complex stress environment and the multivariate surrounding rocks characteristics of deep roadway were analyzed. Then the classification prediction method and the numerical simulation method were simultaneously used to analysis the stability of surrounding rocks. Furthermore, the supporting parameters of bolts were also designed optimally. It was shown that the characteristics of stress distribution, deformation and failure zone of surrounding rocks are not ideal. So it is necessary to optimize the supporting parameters of deep roadway. All these research findings will provide the theory basis for bolts of deep roadway and will ensure the optimization of bolts and the stability of deep roadway in the long run.

• Periodical: Applied Mechanics and Materials (Volumes 353-356)
• Pages: 436-439
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.353-356.436
• Online since: August 2013
• Authors: De Sen Kong, Yong Po Chen
• Keywords: Deep Roadway, Optimum Design, Stability Prediction, Surrounding Rock

References

[1] C.J. Hou, L.S. Guo, P.F. GOU, Stability analysis and mechanism of two-side anchorage body in deep mine gateway, Geotechnique. 30 (1980) 548-552.

[2] H.P. Kang, T.M. Jiang, F.Q. Gao, Development and application of pre-stress anchored bolt supporting technology in coal mine, Journal of China Coal Society. 32 (2007) 673-677.

[3] O.C. Zienkiewicz, C. Humpheson, R.W. Lewis, Analysis on mechanical performance and supporting function of rock bolt plates, Geotechnique. 25 (1975) 617-621.

[4] K. Ugai, Study on structural stress of fold zone affected to mine roadway support, Soils and Foundations. 29 (1989) 190-193.

[5] H.M. Peng, W.H. Chang, X.Y. Peng, Study on deformation and failure of roadway of rock bolting under impact loading, Rock and Soil Mechanics. 26 (2005) 1132-1135.

[6] A.S. Osman, M.D. Bolton, Analysis on mechanism and effect of rock bolts and cables in gateroad with coal seam as roof, Journal of Geotechnical and Geoenvironmental Engineering. 132 (2006) 465-468.

[7] H. Faheem, F. Cai, K. Ugai, Study and applications of roadway support techniques for coal mines, Computers and Geotechnics. 31 (2004) 67-70.

[8] H. Faheem, F. Cai, K. Ugai, The loss of stability and supporting method for the soft and dynamic tunnels, Computers and Geotechnics. 30 (2003) 141-145.

[9] R.P. Chen, W.Y. Zhou, Y.M. Chen, Analysis and application on bolt support characteristic of roadway, Computers and Geotechnics. 36 (2009) 1265-1270.