3-D GRAVITY INVERSION METHOD OF UNDERGROUND CAVITIES USING EULER DECONVOLUTION AND 3-D IMAGING METHOD USING IT

摘要

A method for calculating 3D(Dimensional) gravity inversely in an underground cavity by using Euler deconvolution and a 3D imaging method using the same are provided to reduce non-uniqueness of a solution of a 3D gravity inversion operation and resolution with the reduced number of model parameters by performing the 3D gravity operation of a restricted space based on the solution of the Euler deconvolution. A measurement value such as gravity and magnetic power is received(S1). Location information of an ideal body is found by finding a solution of the Euler deconvolution with an algorithm for finding the location information and a structure index(S2). An inverse operation area is restricted within a predetermined radius around a found Euler solution(S3). A 3D Euler inverse operation is performed in the restricted inverse operation area(S4). The location information of the ideal body is found by setting a window of a predetermined size over three points, finding the measurement value and a horizontal/vertical differential value in the window, and forming a simultaneous equation in the window, which is selected by inputting the obtained measurement value, horizontal/vertical differential value, and structure index into a predetermined formula.