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引言 1975年以来,在运城地区出现多处地裂缝,(图一),除①一⑤号发生在煤矿采空区,库岸、渠旁、河边外,绝大多数发生在地貌为陡坎的断裂构造附近。运城县上王—半坡—五曹地裂缝(以下简称半坡地裂缝)和83年7月发生在万荣县王亚公社薛店村的地裂缝(以下简称薛店地裂缝),规模较大,其破坏程度相当于Ⅶ度地震。这两起地裂缝,在成因上有不同的看法。本文就这两起地裂缝的成因谈一些看法。 一、地裂缝分布区的地质构造背景 运城地区位于祁吕贺“山”字型构造东翼转折部位,是一系列“多”字型展布的新生代断陷盆地与隆起相间展布地带,
Introduction Since 1975, a number of ground fissures have occurred in the Yuncheng area (Figure 1). Except ①①-⑤ occurred outside the coal mined-out area, reservoir banks, canals and rivers, the vast majority occurred in the steep ridge Near the fault structure. Yuncheng Shangwang - Banpo - five caving cracks (hereinafter referred to as the sloping ground cracks) and July 83 occurred in Wanrong County Wang Ya commune Xuedian village fissure (hereinafter referred to Xuedian ground fissures), a larger scale, Its degree of destruction is equivalent to the Ⅶ earthquake. These two cracks have different opinions on the causes. This article talks about the causes of these two cracks. Geological structure of the ground fissure distribution area Yuncheng area is located in the turning point of the eastern ridge of the “Shan” -shaped structure in Qilu He. It is a series of “many” shaped distribution of Cenozoic fault basin and uplifted and white belt,