鉴于施工顺序对防渗墙应力变形影响很大,以折线型防渗墙为例,运用有限元模拟了两种防渗墙的施工顺序,对比分析了竣工期和蓄水期的防渗墙应力变形规律。结果表明,防渗墙在转折处存在一定的拉应力;推迟防渗墙施工能够有效减小防渗墙大主应力、竣工期顺河向位移量,但将增大蓄水后防渗墙的顺河向位移量。 In view of the construction sequence has a great influence on the stress and deformation of the impervious wall, taking the broken-line impervious wall as an example, the construction sequence of the two kinds of impervious walls is simulated by finite element method. The impervious wall stress Deformation law. The results show that there is a certain tensile stress at the turning point of the cut-off wall. If the construction of the cut-off cutoff wall is delayed, the main stress of the cut-off wall and the displacement along the river can be effectively reduced. However, Shun to the displacement.