一、引言井陉—晋城断裂带曾称晋获断裂带,展布于太行山中南段,北端始于灵寿,向南经井陉、和顺县松烟,一直延伸到长治至晋城县的峪口,全长约340km,最宽达25km。它往北与紫荆关断裂呈右行斜列,构成华北地区一条十分醒目、规模宏伟的北北东向断裂带,前人称之太行山深大断裂。井陉—晋城断裂带卫片影象清晰,为太行山重力梯度带和地壳厚度变异带的西界,明显控制了两侧地区的地质发育历史,构成不同构造单元的分界线。该断裂带不同段的活动性和活动时代以及地震活动存在着明显差异,因而潜在的地震危险 I. INTRODUCTION Jingjing - Jincheng fault zone was once called the Jinzhong fault zone and was distributed in the middle and south section of Taihang Mountain. The north end began with Lingshou, southward through Jingjing and loose smoke from Heshun County, extending to Meiyukou from Changzhi to Jincheng County. The total length of about 340km, the widest reach 25km. It is northward with the Bauhinia off the right ramp, forming a very eye-catching, magnificent north-east strike fault zone in northern China, formerly known as the Taihang Mountains deep fault. Jingjing-Jincheng fault belt has a clear image, which is the western boundary of the Taihangshan gravity gradient zone and the crustal thickness variation zone. It clearly controls the geological development history of both sides and constitutes the dividing line between different tectonic units. There is a clear difference between the activities of different stages of the fault zone and the age of the activity and the seismic activity, so the potential earthquake risk