Study on the Deformation and Fracture of Bolted Roadway with Infrared Characteristics

Abstract:

The thermal infrared (TIR) radiation in the deformation and progressive failure of coal roadway and the mechanism of thermo-mechanical coupling were investigated. The experimental achievement showed that the surface TIR temperature (TIRT) rose non-uniformly with the load increase before the stress peak and TIR radiation caused by stress concentration, shear band and bolted area, was much stronger and higher than that caused by stress relaxation, week friction and tensile fracturing. The bolted ranges were determined from the change ratios of TIR temperature of the different areas of the bolted surrounding rocks. The infrared thermal image anomaly appeared with the macro-cracks development in the progressive failure of bolted roadways, which reflected the spatial and temporal features of infrared precursor respectively. The infrared thermal image precursors were classified as TIRT increment region and TIRT constant region to disclosure the damage evolution and localization behaviors of bolted roadways.

• Periodical: Advanced Materials Research (Volume 499)
• Pages: 317-321
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.499.317
• Online since: April 2012
• Authors: Ru Ling Yan, Yong Jun Zhang, Li Qian An, Ling Tao Mao
• Keywords: Infrared Precursor, Infrared Radiation, Stress Concentration, Stress Relaxation, Surrounding Rock, Thermo-Mechanical Coupling

References

[1] H. Kang and J. Wang: Rock bolting theory and complete technology for coal roadways. (China Coal Industry Publishing House, China, 2007).

[2] M.G. Qian: Key Strata Theory of Rock Control (CUMT Press, China, 2000).

[3] B.T Brady, G.A Rowell: Nature, Vol.321 (1986) No.29, p.488.

[4] Gorny VI et al. Proc Acad Sci USSR 1998; 301, p.67.

[5] C.Y. Cui, M.D. Deng, N.G. Geng: Chinese Science Bulletin, Vol.38 (1993) No.6, p.538. (In Chinese)

[6] L.X. Wu, J.Z. Wang: Int J Rock Mech Min Sci, Vol.35 (1998) No.7, p.969.

[7] M.P. Luong:, Oxford:Pergamon; vol.4(1993) p.715.

[8] Y.J. Zhang, L.Q. An, R.H. Ren, et al: Journal of CUMT(English Edition),Vol.15(2005) No.4, p.329.

[9] Y.J. Zhang: Study on IR radiation regular pattern of photoelastic material under loading and correlative studies (Ph.D., China University of Mining and Technology, Beijing, 2003).

[10] Z.Y. Deng, D.S. Zhang, L.Q. An: Journal of CUMT,Vol.35(2006) No.5, p.623.

[11] Z.H. Tan, C.A. Tang, W.C. Zhu, et al: CJRME,Vol.24(2005) No.16, p.2977.