Experiment and Analysis of Surface Soil Rupture Pattern
With the increasing frequency of earthquakes in recent years,studying soil rupture patterns in fault zones has become essen-tial for understanding the damage mechanisms of earthquake faults.This research investigates the impact of different fault types on sur-face morphology through model tests and numerical simulations.Surface soil deformation patterns were examined for tensile faults,compressional faults,and strike-slip faults,and numerical simulations were conducted for strike-slip faults to compare with experiment-al results.The results from the tests reveal that for tensile faults,longitudinal tensile deformation of the ground surface decreases as soil layer thickness increases.In compressional faults,the longitudinal compressive deformation of the surface also decreases with increas-ing soil thickness,but at a slower rate.Additionally,the width and height of the surface uplift area increase with greater soil thickness.For strike-slip faults,surface dislocation decreases as soil thickness increases.Interestingly,the area affected by surface deformation ini-tially expands and then decreases with increasing soil thickness.The numerical simulations of strike-slip faults align closely with the ex-perimental findings,supporting the accuracy of the model tests.
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