The decrease gradient of the peak displacement at the center of plate increases as the foam thickness, fuel-air concentration(i. e. explosion load size) increases to some extent.

Results of displacement, stress and strain of the shaft under the common loads of bend and torsion are obtained by Pre-condition conjugate gradient method.

Soil translocation was related closely to slope gradient, with a significant linear correlation between mean displacement distance and slope gradient (P<0.01).