Deformation law and correlation of soil nailing wall based on measured data

Based on the measured data of soil nailing wall,the ratio of lateral displacement to vertical displacement is discussed.The correlation between lateral and vertical displacements is developed by using statistical method.Some key factors about deformation of soil nailing wall and the effective way to control the deformation of soil nailing wall strictly are pointed out.The analysis shows that space effect on deformation of soil nailing wall is obvious;excavating slope and slope top unloading can control the deformation of soil nailing wall effectively;prestressed anchor on the upper of foundation pit can largely restrain the foundation pit deformation;the increment of vertical displacement of slope top is nonlinear with that of its lateral displacement;the increment of the ratio of vertical displacement to lateral displacement is linear with that of its lateral displacement,the alarm value of lateral displacement on the upper of soil nailing foundation pit is 0.8-1.0 percent of the excavation depth when slope instability happens.