Numerical Simulation on Strengthening Supporting Mechanism and Effect of Anchor-Cables in Deep Coal Mine Roadway

Abstract:

Prestressed anchor-cables supporting technology has become the primary measure for reinforcing the roadway of deep coal mine and complex geological conditions. In this paper, fast Lagrangian analysis of continua (FLAC3D) code is used to analyze the laws of stress, deformation and failure of surrounding rock with and without roadway supporting by anchor-cables. The supporting action mechanism and effect of anchor-cables have been investigated into systematically. The results show that the anchor-cables supporting is adopted at reasonable positions of the roadway in good time which can improve the stress states of deep surrounding rock, decrease the range of failure zone around the roadway, control the roadway deformation effectively and maintain the stability of roadway.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 3512-3515
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.3512
• Online since: May 2012
• Authors: Ju Cai Chang, Guang Xiang Xie
• Keywords: Action Mechanism, Anchor-Cables Supporting, Deep Coal Mine, Numerical Simulation, Roadway, Supporting Effect

References

[1] Chang J C, Xie G X: Mechanical characteristics and stability control of rock roadway surrounding rock in deep mine. Journal of China Coal Society, Vol.34 (2009), pp.881-886. (in Chinese)

DOI: 10.4028/www.scientific.net/amr.255-260.3711

[2] Kang H P, Lin J, Wu Y Z: High pretensioned stress and intensive cable bolting technology set in full section and application in entry affected by dynamic pressure. Journal of China Coal Society, Vol.34 (2009), pp.1153-1159. (in Chinese)

[3] SUN Y F: Application of High Strength Cable Bolting Technology in Lu'an Coal Mining Area. Journal of Mining & Safety Engineering, Vol.27 (2010), pp.595-599. (in Chinese)

[4] Xiao Y N, Ma Z G, Zhao G Z: Deformation Law of Surrounding Rock of Gob-Side Entry Supported by 3-D Anchor-Cable Support . Journal of Mining & Safety Engineering, Vol.28 (2011), pp.187-192. (in Chinese)

[5] W. Lawrence: A method for the design of longwall gateroad roof support. International Journal of Rock Mechanics & Mining Sciences, Vol.46 (2009), p.789–795.

DOI: 10.1016/j.ijrmms.2008.11.012

[6] Kang H P, Wang J H, Lin J: High Pretensioned Stress and Intensive Bolting System and Its Application in Deep Roadways. Journal of China Coal Society , Vol.34 (2007), pp.1233-1238. (in Chinese)

[7] Sun X M, Yang J, Cao W F: Research on space-time action rule of bolt-net-anchor coupling support for deep gateway. Chinese Journal of Rock Mechanics and Engineering, Vol.26 (2007), pp.895-900.

[8] Yuan L: Control of Surrounding Strata in Deep Mine Roadway and Practice in Huainan Area. (China Coal Industry Publishing House, Beijing, 2006) (in Chinese)