CAJ | 학술논문

分析龙岗地区主要断裂成因，并结合岩石力学与构造地质学理论，利用数值模拟分析技术预测须六段底部的裂缝发育与分布情况、类型及产状。结果表明，研究区在喜山早期东西向挤压作用下形成了南北向断裂，喜山晚期北东一南西向压扭作用下形成了北西向断裂。裂缝的发育主要受断裂和构造部位的影响，分布极不均匀。裂缝以高角度剪切缝、低角度剪切缝和高角度纵张缝为主。
분석룡강지구주요단렬성인，병결합암석역학여구조지질학이론，이용수치모의분석기술예측수륙단저부적렬봉발육여분포정황、류형급산상。결과표명，연구구재희산조기동서향제압작용하형성료남북향단렬，희산만기북동일남서향압뉴작용하형성료북서향단렬。렬봉적발육주요수단렬화구조부위적영향，분포겁불균균。렬봉이고각도전절봉、저각도전절봉화고각도종장봉위주。
Based on the tectonic movement in central Sichuan, this paper analyzes the core observation, seismic and drilling data.It also studies the genetic model of main fracture in terms of rock mechanics and structural geology. Through numerical analysis, the development, distribution, types and occurrence of the cracks in Xuliu Bottom area are discussed. The results show that North-South trending fracture was formed under east to west compression in early Himalayan and North-East trending fracture formed under NE - SW pressure torsion action in late Himalayan. The development of cracks is mainly affected by the faults and structural positions. The distribution is very uneven; the main cracks are high-angle shear cracks, low-angle shear cracks and vertical high-angle extensional cracks. The results have some significance for the next exploration and development.