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2(1/2)度体组合模型的重力异常与三度体的重力异常非常接近.根据2(1/2)度倾斜板状体的异常表达式导出的2(1/2)度倾斜物质面的重力异常表达式很简单,在一般情况下物质面的异常与板状体的异常是接近的,相对误差不超过15%.引用2(1/2)度倾斜物质面的重力异常计算式建立了三维密度界面迭代反演方法.该方法归结为求解一个以界面深度修改量为未知向量的线性代数方程组,反复对界面深度进行修正,直到获得满意的结果为止.计算了一个控矿构造实例,取得了较为满意的效果.
The gravitational anomalies of 2 (1/2) scale combination models are very similar to the gravity anomalies of tridimensional bodies.According to the 2 (1/2) inclinations derived from the anomalous expressions of 2 The gravity anomaly expression of surface is very simple, under normal circumstances, the anomaly of material plane is close to that of plate-shaped body, and the relative error is less than 15% .Calculating the gravity anomaly of 2 (1/2) An iterative inversion method of three-dimensional density interface is established.The method is attributed to the solution of a linear algebraic equation system whose interface modification quantity is unknown vector, and the interface depth is modified repeatedly until the satisfactory result is obtained.An ore-control structure Examples, made a more satisfactory results.