沧州地裂缝分布特征及影响因素分析

Distribution and the Influencing Factors of the Geofracture in Cangzhou

近年来,沧州地裂缝呈快速发展趋势,给人民的生产和生活造成很大的威胁。在分析了本地区地裂缝的分布规律及发育特征后,从应力来源、基础条件和诱发因素3个方面,对地裂缝的影响因素进行了分析,认为本地区地裂缝的产生多为复合成因,在致裂应力的作用下,浅层水位埋深大、古河道带发育的地区、地层结构条件差异较大的部位最易形成裂缝。

In recent years, the geo-crack in Cangzhou is getting worse and worse rapidly, which is threatening the living and production. The paper has firstly analyzeds the distribution regularities and occurrence characteristics, then three influencing factors, the stress source, basic conditions and inducing agents. It draws a conclusion that the geo-crack is due to composite genesis. Under the impact of the crack-leading stress, the crack easily occurs in the area where the shallow water level is deep and the old stream developed well and it is inclined to occur in the section of great diversity of the strata structure.