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中文摘要：
以某露天矿边坡为工程背景,基于统一强度理论,通过对两个本构参数b和α的调试和反演,实现对不同强度准则的逼近,构建适合实际工况的自定义本构模型,并编制改进的强度折减法则,通过对相关强度参数进行折减求解边坡安全系数.与基于Mohr-Coulomb强度准则的传统强度折减法相比,它克服了由于Mohr-Coulomb强度准则未考虑中间主应力等造成计算结果偏于保守的缺陷,得到的边坡安全系数更贴近实际工况.
英文摘要：
Taken an open pit mine＇s slope as the engineering background, based on the unified strength theory, different strength criterions were approximated by adjusting the two constitutive parameters of b and a, and a user- defined constitutive model was constructed, which was suitable for actual working conditions. After drawing up the improved strength reduction rule, the slope safety factor was computed by reducing the related strength parameters. Compared with the traditional strength reduction method based on the Mohr-Coulomb strength criterion, which ignoring the effect of intermediate principal stress, this improved strength reduction method overcomes the defect of calculated results being too conservative.
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