地下近似2D构造的重力梯度部面包含有关于深度、规模以及构造(几何形态)的确定性信息。梯度空间图(即水平梯度与垂直梯度图)提供了理想的振幅和相位信息。以往大量的工作说明了根据梯度空间图对截断板模型进行理想的构造解释的可行性。然而,梯度空间图中包含了定性和定量确定性信息具有普遍性,。对梯度空间图的特性检验可见,2D构造可分成延展型和局部型。例如,截断板模型是一种延展模 Gravity Gradient Surfaces for Underground Approximate 2D Structures Contain certainty information about depth, scale and structure (geometry). Gradient space maps (ie, horizontal and vertical gradients) provide ideal amplitude and phase information. A great deal of work in the past illustrates the feasibility of an ideal structural interpretation of a truncated slab model based on a gradient space map. However, the inclusion of qualitative and quantitative deterministic information in a gradient space map is universal. The examination of the characteristics of the gradient space graph shows that the 2D structure can be divided into extended type and partial type. For example, the truncated plate model is an extension model