太佳高速公路岩体边坡稳定性处理技术

摘要

Taking the Tai-Jia highway rock slope as an example, and on the basis of geological exploration, rock mass structure and rock mechanics analysis, this paper used stereographic projection method to judge the slope＇ s instability model initially, then use numerical analysis software ABAQUS to identify the range of sliding surface and tensional fracture＇ s location. Finally, limit equilibrium theory is used to calculate their safety factors. By plotting the curve of safety factors with respect to different final slope angles, we can determine the optimal value of final slope angle under the conditions of security and stability. The system optimization analysis indicated that, original design final slope angle 53.5°is in favor of conservatively, can be raised to 55.4°.%以太佳高速公路岩质边坡为例,在系统的地质勘查、岩体结构分析和岩石力学分析的基础上,利用赤平极射投影法初步判断出边坡潜在的失稳模式,再利用数值分析软件ABAQUS找出潜在滑动面和张裂缝的位置,最后以极限平衡理论计算出各种可能条件下的安全系数,通过绘制安全系数随最终边坡角的变化曲线,即可得出安全稳定条件下的最终边坡角优化结果,系统的分析优化表明,原设计53.5°的最终边坡角偏于保守,可提高至55.4°。