The Control Technology on Continuing Displacement of Tunnel in Coal Seam with High Stress Surrounding Rocks

Abstract:

The measurement data indicates that the main reason for tunnel damage is continuing level displacement with the characteristic of Pie Form. The experiment shows that, compared with uniaxial compressing, the residual stress in triaxiality compressing is greater, this can result that the level support can increase the stress of the surrounding rocks and decrease or stop the level displacement, at same time, control the pie form displacement of the coal. Based on the situation of tunnel displacement, semi-closing support with I bar or support structure with anchor cable are designed, which can control the continuing displacement of tunnel effectively.

• Periodical: Advanced Materials Research (Volumes 250-253)
• Pages: 1552-1555
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.250-253.1552
• Online since: May 2011
• Authors: Ming Xin Lu, Zhen Guo Li, Yin Tong Tian, Ping Song, Yan Sen Huai, Tian Ye Lin, Chun Yu Liu, De Zheng Tong, Shu Pei Qiao
• Keywords: Pie-Form Displacement, Support Structure with Anchor Cable, Tunnel in Coal Seam

References

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[3] Fangting Dong, "The Theory for Relaxation Zone Support of Surrounding Rocks of Tunnel," in Chinese, Journal of China Coal Society, 1994(1)

[4] Mingxin Lu, "The Analysis and Simulation Research on Level Displacement mechanism of Tunnel in Soft Rock," in Chinese, Journal of China Coal Society, 2005(Sup.): 591~595

[5] Mingxin Lu, "The Research on Continual Displacement of Tunnel in Soft Rock in Fengyeng Colliery," in Chinese, Journal of Coal Science and Technology, 2005(5): 65~66 Author introduction Lu Mingxin(1966.2--),Ph.D, associate professor, Mining Engineering Department, Resource and Safety Engineering College, China University of Mining and Technology (Beijing). Address: Resource and Safety Engineering College China University of Mining and Technology (Beijing) D11, Xueyuan Road,Beijing,100083,P.R. China Tel: [phone] Email:[e-mail]

DOI: 10.25103/jestr.085.09