Study On The Prediction Of Surface Rupture Zone And Strong Deformation Zone Caused By Active Fault In Urban Areas

With the rapid economic development, the size of the city is expanding gradually, and the population of urban areas is more and more intensive.As a highly centralized place of human economic and cultural, natural disasters and secondary disasters of earthquake hazards in the city is more and more huge. China is an earthquake-prone countries, and half the city is located in the areas which the basic earthquake intensity is seven degrees and above. Earthquakes and active faults have close contact on the causes. Therefore, the seismic active faults exploration and seismic hazard assessment within the city areas is particularly important. Through the exploration of city active fault and seismic risk assessment, investigate the distribution and characteristics of active faults, and advance to the relevant seismic fortification measures, can greatly reduce the disasters that may arise by active faults in the future.Based on previous site investigations, lessons learned, and scientific research, systematically carried out in different fault mechanism for typical soil layers overlying role when the basic failure process and phenomenon research. Combined with "the urban active fault detection and seismic risk evaluation " project, establish three-dimensional active fault model of the target cities, using the dynamic finite element method to analysis the numerical simulation, predict the surface rupture zone and strong deformation zone caused by active fault in urban areas. Through the study of this project, to provide fundamental basis for the seismic fortification and disaster prevention and mitigation of urban areas, and also provide a reference for similar scientific research in the future.