中文摘要：

中生代渤海湾盆地的形成与演化是古亚洲洋构造域、太平洋构造域和特提斯洋构造域先后或者共同作用的结果。已有构造解析揭示，挤出构造模式是渤海湾盆地形成的重要模式，但难以区分其动力学成因机制与周边板块边界作用的动力关系。为此，运用FLAC软件对该盆地的动力学进行数值模拟，模拟结果显示华北克拉通在三大构造域作用下胶辽地块东北角向北东方向逃逸，西北角向东逃逸；而渤鲁地块则向南西方向挤出，最终导致渤海湾盆地中生代构造格局的形成。结果表明，太平洋构造域在渤海湾盆地地区中生代的演化中起着最为重要的作用。同时，在燕山期的板块边界应力条件变化过程中，华北克拉通整体发生了逆时针的旋转，这一模拟结果与研究区的燕山期构造格局相吻合。

英文摘要：

The formation and evolution of the Meso-Cenozoic Bohai Bay Basin is closely related with the Pa- leo-Asian Ocean Tectonic Domain, the Pacific Tectonic Domain and the Tethys Tectonics Domain. Previ- ous structural analysis revealed that extrusion tectonics is one of the significant regimes to the formation of the Bohai Bay Basin. However, its geodynamics is difficult to be separated from the dynamics of plate boundaries. Therefore, this paper focused on their relation between its geodynamics and the regional stress fields by simulation based on FLAC2D. The calculated result indicates that the northeast part of the Jiaoliao Block escaped northeastward and the southwest part eastward during Mesozoic while the Bolu Block es- caped southwestward, and all these processes contribute to the last configuration of the Bohai Bay Basin. The results also reveal that the Pacific Tectonic Domain plays the most important role for the basin. Simul- taneously, the North China Craton rotated anticlockwise with the variation in regional stress fields during different structural evolutionary stages. This result is in accordance with the Yanshanian tectonic outline of the study area.