长江上游沿岸地区地质构造与灾害及其对城镇发展的影响

长江上游（巫山——攀枝花段）沿岸地区具特定的地质条件和地理环境。复杂的区域构造在不同的地域引起的地震、泥石流、滑坡等地质灾害，影响着城镇的建设与发展。本文通过所收集的大量资料对这一地区进行了地质条件分析以及不同地质灾害危险性的区域划分，论述了地质灾害对城镇发展的影响，指出在城镇建设中应采取的避免地质灾害发生的措施。

Geologic Tectonic and Disasters in Alongshore Area at the Upper Reaches of the Yantgze River and the Influences on Urban Development

There are speclfic geologic condition and geographic environment in alongshore area at the upperreaches of the Yantgze River. The complex struture resulted in many geologic disasters in the area.such as earthquake catastrophe, mud-rock flows and landslide. These disaters affected the constructionand development of cities and towns. In this paper,the regioual geologic conditions were analysed witha great amount of information. The dangerous regionalization were defined according to the degree ofvarious geologic disaters.The factors affectirg the devlopment of cities and towns were expounded.andthe measures that could avoide geoloyic disasters in abvance during development were suggested too.