【作者】 李有才； 曹树恒；

【Author】 LI Youcai CAO Shuyuan (Sichuan Earthquake Administration,Chengdu 610041)

【机构】 四川省地震局；

【摘要】 本文通过该区地震地质、新构造、深部地球物理、历史地震,古建筑及现今地震活动等最新资料的深入研究,结果表明,坝区及其附近地区具有发生7.5级左右大地震地质构造背景,该区历史上曾经发生过7.5级左右大地震,近期该区有发生7级以上大地震中长期趋势背景;坝区的地震基本烈度是Ⅸ度以上;坝区的地壳属基本不稳定区。更多还原

【Abstract】 According to many deep researches and to the latest information of this area about its geology,its earth structure;by using the physique of the deep earth,the history of the earthquake and the study of the tradition architectures, we obtain the result that this area is very instable.It happened here and areas nearby some big earthquakes around 7.5 degree.There is a threat that an earthquake more than 7 degrees would take place recently. What’s more,the Intensity of earthquake here is more than 9degree which raises even more the danger.更多还原