楔形体黄土崩塌的稳定性分析方法

楔形体黄土崩塌主要受两组相向倾斜的结构面控制。根据楔形体崩塌破坏机制,概化出其地质力学模型,结合极限平衡方程,考虑摩尔库仑准则,建立了楔形体总的稳定性系数及各个结构面的稳定性系数计算公式,提出了楔形体黄土崩塌稳定性分析方法。研究结果为定量评价黄土崩塌的稳定性提供了理论依据,对黄土崩塌治理的设计与施工具有参考价值。

Stability analysis for wedge-shaped loess collapse

Wedge-shaped loess collapse is mainly controlled by two opposite structural planes. According to the failure mechanism of wedge-shaped collapses, the geomechanics model was generalized. Formulas were established to calculate the coefficient of stability of wedge and two structural planes by combining the limit equilibrium equation, in consideration of Mohr-Coulomb strength criterion, and stability analysis method of wedge-shaped loess collapse was put forward. The research results provided the theoretical basis for quantitative evaluation of stability of loess collapse, and have important reference value for the design and construction of regulation project for loess collapse.