OVERTURNING refers to the tipping over of the retaining wall as it rotates about the toe of the structure.The overturning force is the sum of each destabilizing force times its moment arm.

• 倾覆指挡土墙倾倒,相对于挡土墙沿它的结构支撑点旋转，倾覆作用是各个不稳定因素与力臂乘积的总和。