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4 计算结果 为了模拟山字型构造随时间演变规律,以位于鄂、豫、皖、苏省相邻地区的淮阳山字型构造为例。考虑到山字型构造为地壳上部构造形迹,在0～22km深度范围内弹性模量E采用0.86×10~(11)(Pa)泊桑比v为0.3,在Ross模型中粘性系数η为10~(22)～10~(23)(poise)E_1=0.35E、E_2=0.45E。由于中国境内几十个山字型构造绝大部分弧顶向南凸出,中小型山字型构造往往是在纬向构造带内发育而成的,大型或巨型山字型构造大部分在两条纬向带及经向带之间,这种空间展布在某种程度上反映出山字型构造与纬向带及经向带
4 Calculation Results In order to simulate the evolution of the mountain font structure with time, Huaiyang Mountain font structure located in the adjacent areas of Hubei, Henan, Anhui and Jiangsu provinces is taken as an example. Considering that the Yamagishi structure is the top crustal structure, the elastic modulus E in the depth of 0 ~ 22km is 0.86 × 10 ~ (11) Pa, the Poisson’s ratio v is 0.3, and the viscosity coefficient η in the Ross model is 10 ~ (22) ~ 10 ~ (23) (poise) E_1 = 0.35E, E_2 = 0.45E. Due to the fact that most of the arc-shaped domes of dozens of mountain-shaped structures in China protrude southwards, the small and medium-sized mountain-shaped structures are often developed in the zonal structural belt. Most of the large or large mountain-shaped structures are in two Between the zonal and meridional bands, this spatial distribution reflects to some extent the mountain-shaped structure and the zonal and meridional bands