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泾阳县北部地区是地裂缝灾害发育的地区,地裂缝主要分布在山前冲洪积扇区,发育在全新世地层中,平面形态上为直线型、雁列型、锯齿型和弯曲形,在分布上有方向性和群集性,在范围上从北到南呈逐渐扩大的趋势。本文在对区内地质环境论述的基础上,总结了区内地裂缝的发育特征和分布特征,分析了该区地裂缝的形成条件。作者认为其主要影响因素为土体结构、地质构造、地震、降雨和灌溉入渗。
The northern part of Jingyang County is an area where ground fissure disasters develop. The fissures are mainly distributed in the piedmont alluvial fan sector and are developed in the Holocene. The plane shapes are linear, geese, zigzag and curved. The distribution of directional and clustering, in the range from north to south gradually expanding trend. Based on the exposition of geological environment in this area, this paper summarizes the development characteristics and distribution characteristics of the regional fissures and analyzes the formation conditions of the fissures in this area. The author believes that the main influencing factors are soil structure, geological structure, earthquake, rainfall and irrigation infiltration.