锚杆支护对边坡稳定性影响分析

以某地铁车站交通疏解道路路基边坡工程为依托，运用FLAC3D建立模型，研究锚杆对边坡稳定性的影响。结果表明:锚杆可有效增加边坡安全系数；锚杆长度不变时，安全系数随锚杆倾角增大先增加后线性关系减小；锚杆间距不变时，安全系数随长度增加先增加后近似线性关系减小；锚杆长度不超过7 m时，安全系数随锚杆间距增加近似线性关系减小，大于7 m时安全系数随锚杆间距增加近似呈抛物线关系减小；单排锚杆位置不变时，安全系数随锚杆长度增加先增加后减小，中下部锚杆可有效提升边坡稳定性。

Analysis on Influence of Anchor Support on Slope Stability

Based on a traffic relief road subgrade slope engineering of the subway station, the influence of anchor bolt on slope stability was studied by established FLAC3D model. The results show that the anchor can effectively increase the safety factor of the slope; when the length of anchor is constant, the safety factor increases first and then decreases with linearity with increase of inclination of anchor; when the anchor spacing is constant, the safety factor increases first and then decreases with approximate linearity with increase of anchor length; when the length of anchor does not exceed 7 m, the safety factor decreases with approximate linearity with increase of anchor space, when the length exceeds 7 m, the safety factor decreases with approximate parabolic relationship with increase of anchor space; when the position of a single row of anchors is unchanged, the safety factor increases first and decreases with increases of length of anchor, anchors in middle and lower sides of slope can effectively improve the stability of slope.