浅层地震勘探在牛东断裂探测中的应用

Application of Shallow Seismic Exploration in Niudong Fault

牛东断裂是津保交通廊道上一条重要的北东向断裂。研究该断裂的分布、性质、活动状况可以完善和优化城市规划,减小地质灾害的破坏。高分辨率浅层地震反射勘探方法是一种行之有效的地球物理勘探方法,可以获取断裂浅部构造信息。为了查明牛东断裂中北段浅部构造,该文应用浅层地震反射探测剖面,获取了准确的浅部定位及断裂发肓特征。结果表明:牛东断裂为第四纪活动断裂,正断层性质,视倾角较陡,断距由深至浅逐步减小,并具有明显的分段性;浅层地震勘探在探测牛东断裂中收到了较好效果。

The Niudong Fault is an important north-easterly fault in the Jinbao traffic corridor.Studying the distribution,nature and activity of the fault can improve and optimize urban planning and reduce the damage of geological disasters.The high-resolution shallow seismic reflection survey is an effective geophysical survey method,which can obtain the fault information of shallow structure.In order to find out the shallow structure of the middle and northern section of Niudong Fault,in this paper,the accurate location and characteristics of fault occurrence in the shallow part are obtained by reflection detection profile of shallow seismic.The results show that the Niudong Fault is a quaternary active fault and a normal fault.The apparent dip angle is steep,the fault distance decreases gradually from deep to shallow,and it has obvious segmentation;The shallow seismic exploration achieves good results in detecting Niudong Fault.