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结合某边坡工程实例,利用有限差分软件FLAC,建立平面应变二维数值模型,基于抗剪强度折减法原理,分别对该边坡在锚杆加固前后的稳定性进行了数值计算分析。结果表明,在天然状态下,该边坡处于稳定状态,但在强降雨条件下(饱和状态),则存在失稳的可能;而在锚杆加固后,两种状态下的边坡安全系数均能大于工程设计要求值1.25,且潜在的滑动面也基本消除。
Combined with a slope engineering example, two-dimensional numerical model of plane strain is established by using finite difference software FLAC. Based on the principle of shear strength reduction method, the stability of the slope before and after reinforcement is numerically calculated and analyzed. The results show that under natural conditions, the slope is in a stable condition, but under heavy rainfall (saturated condition), there is a possibility of instability. However, both sides of the slope safety factor Can be greater than the engineering design value of 1.25, and the potential sliding surface is basically eliminated.