Fracture Interaction And Earthquake Prediction Methods

In the article, firstly,from phenomenon to theory, we have studied the characteristics of strong group seismogenic earthquakes and group activities and tried setting up 3D finite element model and studied the mechanism of strong earthquakes group activities, particularly, aiming at Sichuan-Yunnan special region, applying the latest research result of geologic structure and deep physical geography. It is only the original intention to set up a theoretical basal platform for earthquake analysis and prediction and to search for some ways for physical prediction.We have set up a mathematic modeling platform of 3D finite element for earthquake analysis and prediction. Although it is not very perfect, the research direction is meaningful. It will have some edificatory significant in theory for applying mathematic modeling research on practical earthquake prediction, and have some use for reference for development of earthquake prediction from experiential prediction to physical prediction.Secondly, at"gravity and geomagnetism structure inversion research", we collected a great deal of new and precious gravity and geomagnetism data in Tianjin and neighborhood. After digitalizing these data, using a lot of new inversion methods, we carried out structure inversion overall Tianjin and neighborhood. Through the contrast research of gravity and geomagnetism, we gave out the structure descriptions at different depth according to different methods. At last, by comprehensive analysis of the inversion results, we gave out the characteristic explanations of structures at different depths. We discussed the deep characteristics of Cangdong fault and Tianjin fault. The seismogenic of Cangdong fault and Tianjin fault features was given out .Finally, at earthquake prediction in Tianjin, we built up"Tianjin basic prediction database", including geographic information databases, the geologic structure databases, dangerous area databases, the station information databases, the early sign data database of physics...