Comprehensive geophysical exploration methods of hidden active faults——an example of Qingchuan country district hidden active faults

Wenchuan 8.0M large earthquake makes Qingchuan city suffer severe damage,and the increased abnormal destruction with banded forms occurred.Post-disaster restoration and reconstruction work has been restricted by buried fault,deformation of the mountain,a series of occurred strong aftershock activities and other factors,in particularly,through buried active faults of the city,the geophysical positioning method to identify the location of fault distribution is imperative.Geophysical exploration methods are used to positioning the locations of Qingchuan active faults,the distribution case of buried faults of the flat NE Pingwu-Qingchuan in the city is identified,the excavating and verifying work of exploratory trench are carried out according to the geophysical interpretation,the locations of the main fault and its branches are identified,and the scientific basis for the post-disaster restoration and reconstruction work is provided.