CAJ | 학술논문

依据最新的辽宁及其邻近地区地壳上地幔三维地震波速结构，并考虑地质构造、断裂以及地壳深部的构造环境等因素，建立研究区的三维地质模型；结合震源机制解与原地应力测量资料，分析区域现代地应力场特征，确定了研究区的边界约束和动力边界条件．在以上基础上，采用线弹性介质模型进行研究区三维构造应力场的有限元数值模拟，探讨研究区地壳应力场的基本特征．对比分析表明，本区地壳内应力场的三维有限元数值模拟结果与已发生的地震有着较好的对应关系，并指出了值得注意的有潜在发震可能的地震危险区．
의거최신적료녕급기린근지구지각상지만삼유지진파속결구，병고필지질구조、단렬이급지각심부적구조배경등인소，건립연구구적삼유지질모형；결합진원궤제해여원지응력측량자료，분석구역현대지응력장특정，학정료연구구적변계약속화동력변계조건．재이상기출상，채용선탄성개질모형진행연구구삼유구조응력장적유한원수치모의，탐토연구구지각응력장적기본특정．대비분석표명，본구지각내응력장적삼유유한원수치모의결과여이발생적지진유착교호적대응관계，병지출료치득주의적유잠재발진가능적지진위험구．
Based on the latest result in research on 3D seismic wave velocity structure of crust and uppermost mantle and taking geological setting and fracture zones into consideration, a 3D geological model for the studied region is built up. The boundary constraint and force loading boundary condition for the model are determined according to the characteristics of crustal stress field deduced from earthquake focal mechanism and in-situ stress measurement data. Using linear elastic material model a 3D finite element simulation is conducted to study the characteristics of crustal stress field. A comparison analysis between the simulated stress field and earthquake locations reveals that the moderate and strong earthquakes generally occurred in the zones with high shear stress gradient. Furthermore, the paper notices a few potential earthquake-prone regions.