论文部分内容阅读
本文用粘性牛顿流体有限元数值方法模拟郯庐断裂带主要构造演化阶段的应力场、形变场和运动速率,探讨各构造期的动力来源、边界力的作用方式及岩石物性的影响作用。旨在进一步说明郯庐断裂带多期、多次和性质各异的构造活动与华北陆块、下扬子陆块、西太平洋板块、菲律宾板块等构造单元的运动密切相关。除了东亚大陆周边板块运动造成的推力,与此相伴的地热异常也是构成郯庐断裂带各期应力场,特别是拉张期应力场特征的重要动力条件之一。
In this paper, the viscous Newton fluid finite element numerical method is used to simulate the stress field, deformation field and movement velocity in the main tectonic evolution stage of the Tan-Lu fault zone, and to discuss the influence of dynamic sources, boundary forces and petrophysical properties during various tectonic periods. The purpose of this study is to further illustrate that the tectonic activities of the Tancheng-Lujiang fault zone with multiple, multiple and diverse features are closely related to the tectonic units in the North China Block, the Lower Yangtze Block, the Western Pacific Plate and the Philippine Plate. Except for the thrust caused by plate movement around the East Asian continent, the accompanying geothermal anomalies are also one of the important dynamic conditions that make up the stress fields in the Tan-Lu fault zone, especially the tensile stress field.