人们普遍认为,构造地震常常发生在断裂的拐弯、交叉和端点部位,而大家熟知的鲜水河断裂带,地震十分活跃,却是一条走向比较稳定的以扭性为主的断层。这就不能不引起人们的疑问:这里的地震活动同构造之间究竟存在什么样的关系?有什么样的特征?具什么样的规律? It is generally accepted that tectonic earthquakes often occur at the corners, intersections and endpoints of faults. However, the well-known Xianshuihe fault zone is very active in earthquakes but a relatively stable, torsional-dominated fault. This can not but cause people’s questions: What is the relationship between the seismic activity here and the tectonics? What kind of features? What kind of rules?