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从现有的众多的地震资料研究表明，龙门山地震带（中南段，下同）中强地震具有明显的迁移特征。即本世纪前的中强地震的迁移规律是由北（北东）往南（南西）迁移；本世纪以来的中强地震的迁移规律正好相反，即由南（南西）往北（北东）迁移。龙门山地震带，历史上曾多次发生破坏性大地震，近年来，我国大陆的地震活动又进入了一个新的活跃期，特别是汶、理、茂地区多次被省和地区地震会商会列为重点监视区之一。鉴于此，对龙门山地震带中强地震迁移特征及未来震情进行研究、探索、具有十分重要的现实意义。龙门山地震带的地震活动受到了国内外地震专家学者的关注，并涌现出了一大批科研成果。但本文拟定的思路，研究方法均大相径庭。本文主要对龙门山地震带的中强地震发生的时空分布、能量释放、地震活动与迁移特征等进行分析、研究，探索预报未来地震发生的地点、震级大小、震害范围、破坏程度，为区内各县的经济建设和灾害防御等提供参考依据。
According to the large number of seismic data available, it shows that the moderate-strong earthquakes in the Longmenshan seismic zone (central-southern segment, the same below) have obvious migration characteristics. That is, the migration of the moderate-strong earthquakes before the present century was migrated from North (North East) to South (South West); the law of migration of moderate-strong earthquakes in the 21st century was just the opposite, that is, from South (South West) to North (North East) migrate. In the past few years, there have been many destructive earthquakes in the history of the Longmenshan seismic zone. In recent years, the seismic activities in mainland China have entered a new active phase. In particular, the Wenchuan, As one of the key surveillance area. In view of this, it is of great practical significance to study and explore the characteristics of mid-strong earthquake migration and the future earthquake conditions in the Longmenshan seismic zone. The seismic activity of the Longmenshan seismic zone has drawn the attention of earthquake experts and scholars both at home and abroad, and a large number of scientific research achievements have emerged. However, the ideas and research methods developed in this paper are very different. This paper mainly analyzes the spatiotemporal distribution, energy release, seismic activity and migration characteristics of moderate-strong earthquakes occurring in the Longmen Shan seismic zone, and studies and forecasts the location, magnitude, magnitude and degree of damage caused by earthquakes in the future, Within the county’s economic construction and disaster prevention provide a reference.