Characteristics Analysis Of Shallow-focus Earthquake And Relativity Research Of Mine- Earthquake

Mine-earthquake is one of the leading mine dynamic phenomena in the course of the mine production. Just now, it is not solved entirely in the theory and the practice. Along with the increasing of the coalmine depth, the frequency and intensity of the mine earthquake are increasing in the mine containing the mine earthquake, which brings the huge stress to safe productivity. Meanwhile, the earthquake often takes place in our country, one third of the earthquakes happen here, and many mining areas locate in the earthquake zone. The nature earthquake distributions of the space-time reflect the condition about the distribution of the region structure, the activity of the structure and its changes about the stress field. Thus, analyzing characteristics of region earthquake is useful to verify the distributions of the region structure, characteristics of structure and the changes of stress field. Simultaneously analyzing the relativity between earthquake and nature earthquake in the time and space is useful to master its effect factors, the characteristic, and the mechanism. It plays a guiding role in macro for the prediction, the detection and the prevention of the mine dynamic phenomena, such as the earthquake.The Wulong coalmine is regarded as the research object in the thesis, systematic analysis the phenomena that the modern structure and its stress field affect the nature earthquake and mine-earthquake, the characteristics of the mine-earthquake and shallow-focus earthquake and their distributions in space, finally ascertain the relativity between them in the time and space, by comprehensively using the disaster prevention science, seismology, statistics, geophysics and other principles and research methods.