论文部分内容阅读
一、前言本作者曾采用激光散斑法对首都圈现今断层活动特征进行均质平面问题的物理模拟实验。实验结果给出不同区域应力场作用下61条断层上221个测点的水平活动特征,通过与本区63个跨断层观测台,点观测曲线的对比,不仅证明本区唐山7.8级地震前后和大同阳高6.1级地震前后至今的区域应力作用方式已由N65°～70°W变为N30°～50°E,而且较好地反映出断层活动量与地震活动的频率及强度相关、断层活动的分区性、分
I. Preface The author has used laser speckle method to simulate the present-day fault movement features in the capital circle for homogeneous planar problems. The experimental results show the horizontal movement characteristics of 221 measuring points on 61 faults under the stress field of different regions. By comparing with 63 cross-fault observational stations and point observation curves in this area, it is not only proven that before and after the Tangshan M8.8 earthquake The regional stress action mode before and after the Datong-Yangxi M (subscript S) 6.1 Earthquake has been changed from N65 ° ~ 70 ° W to N30 ° ~50 ° E, and well reflects that the fault activity is related to the frequency and intensity of seismic activity. The fault activity Division, points