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高速公路建设中经常存在层状结构的岩体边坡。层状岩体的最显著力学特性是各向异性。通过层状岩体的各向异性抗剪强度参数的表述方法,提出岩体的抗剪强度参数与滑动面夹角关系的表达式,并将层状岩体的各向异性特性引入到极限平衡分析方法。实例研究表明:考虑层状岩体各向异性的分析方法是一种更为安全可靠的边坡稳定性分析方法,有助于准确评价层状岩体边坡的实际稳定性,可为工程决策提供更加合理的依据。
There are often stratified rock mass slopes in highway construction. The most significant mechanical property of layered rock mass is anisotropy. Based on the method of describing the anisotropic shear strength parameters of layered rock mass, the expression of the relationship between the shear strength parameters of rock mass and the included angle of the sliding surface is proposed, and the anisotropy of the layered rock mass is introduced into the limit equilibrium Analytical method. The case study shows that the analysis method considering the anisotropy of layered rock mass is a safer and more reliable slope stability analysis method, which can help to accurately evaluate the actual stability of layered rock slope and can be used for engineering decision-making Provide a more reasonable basis.