四川地区强震与发震构造几何结构特征关系的探讨

Research on the Relations of Strong Earthguakes and Geometric Features of Seismic Fracture in Sichuan Provence

本文通过近些年来对四川活动断裂与强震关系的研究，初步总结了四川地区强震与发震构造几何结构特征的关系。作者认为：走滑断层的斜列状结构，断层的交叉，大断裂带的末端，断裂上的枢纽、弯曲、转折部位以及断裂带上的横向隆起、拗陷及其交替部位都可能是发震构造的结构特征，亦是强震易于发生的部位。这对地震危险区或潜在震源区的划分及其地震预报、地震区划和工程区地震安全性评价具有重要的意义。

In this paper, the relations of strong earthquakes and geometric features of seismic fracture is initially sumarized based on the studies on the relations of active fault and strong earthguake in Sichuan province in recent years. The authors agreed that the parts of echelon, crosse, end, pivot, arc, turning point of faults, and horizontal upheaval, depression or the part of their cross may be the seismic generating structures where strong earthquakes frequently occur. Therefore, this researsh is important for marking seismic risk areas and earthquake engineering.