Influence of Underground Mining on Failure Mode and Stability of Counter-Tilt Slope in Surface Mines

Abstract:

How to demonstrate the deformation and failure mode of the slope under combine surface and underground mining and evaluate its stability scientifically is one of the problems that need urgent solutions in mining engineering. First, the deformation and failure mode of the slope under simple surface mining, the deformation and failure mechanism of the overlying strata affected by underground mining and deformation mechanism of the slope under combined surface and underground mining were analyzed, then the failure mode and the stability calculation method of the slope under combined surface and underground mining was studied. The results show that the failure modes of the slope under combined surface and underground mining involve three patterns: slipping failure, subsiding failure and slipping-subsiding combined failure, that the failure modes and the stability of the slope under combined surface and underground mining be significantly affected by the underground mining positions and the influence be mainly controlled by the length of the latent slide plane of the slope and the weakening degree of the rock masses in the subsidence range. Finally, a limit equilibrium method to calculate the slope stability under combined surface and underground mining was put forward.

• Periodical: Advanced Materials Research (Volumes 594-597)
• Pages: 80-85
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.594-597.80
• Online since: November 2012
• Authors: Dong Wang, Lan Zhu Cao, Chun De Piao, Run Cai Bai
• Keywords: Combined Surface and Underground Mining, Counter-Tilt Slope, Failure Mode, Limit Equilibrium Method (LEM), Slope Stability

References

[1] Zhixing Zuo. Study on Evaluation for Stability and Control Technique of High-steep Slope during Turning Open Pit into Underground Mining. Hunan: Central South University, 2009 (in Chinese).

[2] Liwei Xing. Slope Stability Analysis of Open-pit with Underground Mining. Hubei: Wuhan University of Technology, 2007 (in Chinese).

[3] Dong Wang, Lanzhu Cao, Ziling Song. Journal of Hefei University of Technology, Vol. 32(2009), p.1562 (in Chinese).

[4] Pinglu Huang, Congxin Chen. Chinese Journal of Rock Mechanics and Engineering, Vol. 26(2007), p.4037 (in Chinese).

[5] Fang Han, Fang Xie, Jinan Wang. Journal of University of Science and Technology Beijing, Vol. 28(2006), p.510 (in Chinese).

[6] Youyi Zheng. Journal of Liaoning Technical University, Vol. 28(2009), p.533 (in Chinese).

[7] Shiguo Sun, Hengzhong Cui, Qifa Ran, et al. Earth and Environment, Vol. 33(2005), p.107 (in Chinese).

[8] Hang Lan. Journal of China University of Mining & Technology, Vol. 37(2008), pp.570-574 (in Chinese).

[9] Yizhong Luo, Aixiang Wu, J. Cent. South Univ. Technol, Vol. 11(2004), p.434.

[10] Jianping Wu, Jianming Zhu, Xinyuan Cheng. China Mining Magazine, Vol. 17(2008), p.79 (in Chinese).

[11] Jianming Zhu, Xianquan Liu, Jianping Wu. Journal of Engineering Geology, Vol. 28(2006), p.206 (in Chinese).

[12] Shiguo Sun, Meifeng Cai, Sijing Wang. Chinese Journal of Geotechnical Engineering, Vol. 22(2000), p.136 (in Chinese).

[13] Xianping Chen. Resources Environment & Engineering, Vol. 20(2006), p.709 (in Chinese).

[14] Jiehong Shi, Jinan Wang, Fang Xie. Journal of Safety Science and Technology, Vol. 3(2007), p.76 (in Chinese).

[15] Shiguo Sun. Rock Movement Laws of Slope under Combined Surface Mining and Underground Mining. Beijing: Seismological Press, 2000 (in Chinese).

[16] Shiguo Sun. Study of Deformation and Stability of Rock Slope under Combined Mining. Beijing: University of Science and Technology Beijing, 1998 (in Chinese).