CAJ | 학술논문

根据川东北构造的区域演化历史分析,黄龙场构造是多期构造运动相互叠加、相互影响的结果,对其形成影响最大的是晚喜山运动北东—南西向作用力。该文采用有限元数值模拟方法,并结合Mohr-Coulomb准则对黄龙场构造飞仙关组四段底部裂缝进行了预测,裂缝主要分布在靠近黄龙场构造高点附近、断裂两侧和断裂交汇处。在2期构造应力场作用下,黄龙场构造形成了2期共6组裂缝,裂缝延伸方向主要为北西向、北东向、近东西向和近南北向。
근거천동북구조적구역연화역사분석,황룡장구조시다기구조운동상호첩가、상호영향적결과,대기형성영향최대적시만희산운동북동—남서향작용력。해문채용유한원수치모의방법,병결합Mohr-Coulomb준칙대황룡장구조비선관조사단저부렬봉진행료예측,렬봉주요분포재고근황룡장구조고점부근、단렬량측화단렬교회처。재2기구조응력장작용하,황룡장구조형성료2기공6조렬봉,렬봉연신방향주요위북서향、북동향、근동서향화근남북향。
According to the regional tectonic evolution in northeastern Sichuan Basin,Huanglongchang structure is the result of multiphase tectonic movements,and it is mostly affected by the force from NE to SW during the late Himalayan movement.The finite element method and Mohr-Coulomb criterion are used to predict the fractures at the bottom of T1 f 4 in Huanglongchang structure.The result shows that the fractures are well developed in structural high and nearby,two sides of fault,as well as the intersections of faults.Underwent two periods of tectonic stress,six groups of fractures are formed in Huanglongchang structure,and the main trends of these fractures are NW,NE,NNE and NNW.