Numerical Simulation and Design Optimization Research of Slope Ratio and Platforms Influence on a High Rock Cut Slope Engineering Stability

Abstract:

According to the rock high-cut slope excavation engineering practice of a substation in Jiangxi, with the goals of stable and economic rational slope design, numerical simulation research of the slope ratio and unloading platform and design optimization work was carried out. The slope safety factor, displacement and plastic zone distribution changes of different slope ratio and platform setting programs were obtained. The results show that:(1) the adjustment of the slope ratio and platform can significantly affect the slope displacement and plastic zone distribution, reasonable slope ratio and platform can reduce the horizontal displacement and plastic zone of slope, increase the safety factor and stability;(2) the slope monitoring results show that numerical simulation optimization design is feasible, and the excavation slope maintain security and stability during the construction period, and economic benefit has been obtained. The research conclusions can provide technical support for the engineering design, and reference for design and research of high-cut slope excavation engineering with similar conditions in that region.

• Periodical: Advanced Materials Research (Volumes 1065-1069)
• Pages: 151-158
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1065-1069.151
• Online since: December 2014
• Authors: Lei He*, Yan Ren, Zi Xia Feng, Zhi Wei Han
• Keywords: High Cut Rock Slope, Numerical Simulation, Safety Factor, Slope Monitoring, Unloading Platform

References

[1] GB 50330-2002 Technical Code for Building Slope Engineering[S]. Beijing: China Architecture & Building Press, 2002( in Chinese).

[2] Qiuru Chen, Min Liang. Research of optimum method of excavation slope design[J]. Journal of Chongqing Jiaotong University, 2006, 25(2): 83-86.

[3] Itasca Consulting Group, Inc. FLAC(Fast Lagrangian Analysis of Continua) User's Manuals, Version5. 0[M]. Minneapolis: Itasca Consulting Group, Inc, (2005).

[4] Bo Liu, Yanhui Han. Theory, example and application of FLAC[M]. Beijing: People's taffic Press, (2005).

[5] Wenbin Peng. Practical manuals of FLAC[M]. Mechanic and Industry Press, (2007).

[6] Yumin Chen, Dingping Xu. Basic theory and engineering practice of FLAC/FLAC3D[M]. Beijing: China water conservancy and hydropower Press, (2013).

[7] Shuwei Sun, Hang Lin, Lianwei Ren. The application of FLAC3D in geological engineering[M]. Beijing: China water conservancy and hydropower Press, (2011).

[8] Shangyi Zhao etc. Infinite strength reduction method to solve the safety factor of slope stability[J]. Chinese Journal of Rock Mechanics and Engineering, 2002, 24(3): 343-346.

[9] GB50497-2009 Technical Code for Monitoring of Building Foundation Pit Engineering[S]. Beijing: China Planning Press , 2009. (in Chinese).

[10] Geng Li, Li Liu etc. Rock high slope safety monitoring and stability analysis[J]. Journal of Xihua University·Natural Science, 2007, 26(5): 62-65.

[11] Wentao Shang, Guohe Guo, Zhen Wang. Analysis on Safety Monitoring and Stability of High Soil Slope[J]. Journal of Chongqing Jiao tong University·Natural Science, 2008, 27(Suppl): 956-959.

[12] Junfeng Fu, Li Liu etc. Monitoring and Stability Analysis of High-Steep Slope[J]. Journal of Xihua University·Natural Science, 2010, 29(1): 107-110.