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地球物理学进展 2008
The method of borehole three-component magnetic survey and its effective originally exploration
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Abstract:
The data-processing method of the borehole three-component magnetic survey mainly modeled ground magnetic survey method before,the magnetic survey material was not fully used,making the explaination simply,expositors free strongly,and the errors largerer,further more,it could not provide the detailed interpretative result for magnetic ore exploration.At the basic of working practice,this article introduced the method whitch found out blind ore using the borehole three-component magnetic survey,emphasized using magnetism unusual vector chart carring on the theory and the method of half quantitative interpretation,and treatised detailedly the data-processing of the borehole three-component survey and the charts,To prove out the graphic-processing result,we mainly used the vector chart whitch was convergence or radiation to extrapolate "the ore head","the ore tail"of magnetic ore body,It was obvious to discover the nearby and the bottom blind ore of the well,and the conclusion was correct,the course of explanation and the result was direct-viewing and easy to understand,greatly enhanced the working efficiency,However,we only need 1~2 hours to process and explaine for datum a thousand meter deep drilled hole.The explained result whitch was correct has been basiclly confirmed by geology,and the method was feasible.