从极限平衡分析法推导的稳定性安全系数公式出发,就土钉倾角对边坡稳定性的影响进行了研究。理论分析和数值计算结果表明:在土钉足够长的条件下,最佳土钉入射角为仰角或水平;在土钉比较短时,最佳土钉入射角为倾斜向下,而且应该是从上到下逐层减少向下倾角,这与通常认为土钉设置的倾斜度应逐层增加向下倾角的看法相反。 Based on the formula of stability safety factor deduced by limit equilibrium analysis, the influence of soil nailing angle on slope stability was studied. The theoretical analysis and numerical results show that the optimum angle of incidence of soil nail is elevation or horizontal under the condition that soil nail is long enough and the angle of incidence of optimum soil nail is inclined downward when the soil nail is relatively short, Downwardly and downwardly descending layer by layer, as opposed to the common belief that the inclination of soil nailing should be increased step-by-layer downward.