The formula of the maximum lateral deformation has been proposed for tie - back wall when the anchors are embedded in unmoving soils or in rocks . this work has enlarged the application field of the previous deformation formula . examples from engineering practice prove that the values calculated with above formulas can meet the need of the pit engineering 将上面的变形计算公式做了推广，提出了锚撑挡墙最大侧向位移的预测公式(锚杆锚固不可移动的土层或岩石中) ，工程实例表明，利用该式预测的变形值可以满足工程的需要。
