从模拟实验的结果看底辟发育的力学机制

底辟构造在我国东部沉积盆地中有广泛的分布,并蕴藏有丰富的油气资源。作者模拟了隐刺穿构造的发育过程及其变形特征,从而分析底辟发育的力学机制。实验结果表明,底辟的形成时间和底辟核的形态对底辟变形有重大影响。绝大多数隐刺穿构造。在其顶部都发育一个地堑断裂系,这是底辟构造的共同特征。

MECHANICAL ANALYSIS OF DIAPIRISM AND RESULT BASED ON SIMULATION EXPERIMENTS

Diapiric structure, which is rich in oil and gas and has a vast distribution in sedimentary basin in Eastern China, is a principal type of traps. In this paper, the simulating experiments of the evolution of the blind piercoment structure and its deformational features and mechanical analysis are given. The. result of the experiment shows that the time of the formation of diapir and the shapes of the diapir-corcs have a substantial effect on the deformation of diapir. For the most of the blind piercomend structures, there is a graben fault system developed on the top of the anticline, and this is just the common characteristics of diapiric structure.