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各原型盆地的地层顶面高程趋势面剩余分析，与相应的沉积基底形态分析结果证实，鄂尔多斯盆地中部加里东期侵蚀面附近存在大型平缓隆起。将盆地基底的同沉积构造变形史分析和区域大地构造运动史分析结合起来，拟定了早、晚燕山期的盆地构造应力作用方式和方向；然后利用有限单元法分别模拟了盆地这两个演化阶段的古构造应力场和应变场特征，进而探讨它们与盆地中部大型平缓隆起及大气田的成因联系。可能是下古生界的泥岩和膏盐层在挤压应力场中的垂向膨胀，促成盆地中部的加里东期侵蚀面附近出现大型平缓构造圈闭；低挤压应力与其他因素的叠合，导致低压、负压环境的出现，使中部隆起区既成为天然气运移指向区也成为天然气藏封存箱。
Residual analysis of the top elevation trend surface of each prototype basin and the corresponding sedimentary basement morphology analysis confirm that there are large and gentle uplift near the Caledonian erosion surface in the middle Ordos Basin. Based on the analysis of the synsedimentary structural deformation history of the basement of the basin and the analysis of the tectonic movement history in the region, the pattern and direction of the tectonic stress of the Yanshanian basin in the early and late stages were formulated. Then the finite element method was used to simulate the two evolution stages Paleo-tectonic stress field and strain field, and then discuss their genetic relationship with the large-scale gentle uplift in the central basin and the gas field. Which may be caused by the vertical expansion of the mudstone and gypsum salt layer in the Lower Paleozoic in the compressive stress field, resulting in large and gentle structural traps near the Caledonian erosion surface in the central part of the basin. The combination of low compressive stress and other factors , Resulting in the emergence of low pressure and negative pressure environment, making the central uplift not only become a natural gas migration point area but also become a natural gas storage tank.