中文摘要：

基于非均质应变软化模型,在拉张和挤压雁列构造雁列区贯通过程中,采用FLAC-3D模拟了一条断层内侧节点的水平位移的演变规律及标本全场内的水平、垂直位移反向区的分布规律。研究发现,两类雁列构造在雁列区贯通过程中都发生了位移反向现象,但位移反向区的面积与分布位置差别较大：拉张雁列构造的位移反向区面积大,且基本上都位于雁列区之外;挤压雁列构造位移反向区仅局限于雁列区及附近的断层上。

英文摘要：

Evolution of horizontal displacement of nodes at the internal side of a fault is modeled numerically by use of FLAC-3D,and distribution and evolution of regions where the sign of horizontal or vertical displacement of monitored nodes changes are also presented,based on the proposed heterogeneous and strain softening constitutive model. Result indicates that the reverse displacement phenomenon occurs during the jog failure for both echelon faults. However,the reverse displacement regions differ greatly for different echelon faults. For extensional echelon faults,the regions are large,and basically distribute outside the jog. For compressive echelon faults,the regions only locate in the jog and its adjacent faults.