东川矿区1∶5万重力资料地改及地质效果  

HIGH PRECISE GRAVITY TERRAIN CORRECTION AND THE GEOLOGY EFFECTS IN DONGCHUAN ORE OF YUNNAN

作　　者：张新兵[1] 朱自强[1] 

机构地区：[1]中南工业大学资源环境与建筑工程学院

出　　处：《中南工业大学学报》1998年第5期413-415,共3页Journal of Central South University of Technology(Natural Science)

基　　金：国家自然科学基金;中国有色金属工业总公司重点资助

摘　　要：在某一特定的重力勘探区，用统一的校正密度来作地改是不合理的．作者将新兴的几何学——分形分析理论引入重力勘探领域，把布格异常分形维最小的校正密度作为最佳校正密度．在此基础上，对东川矿区重力数据进行了处理，获得了本区的分区布格校正密度，并对其进行了三角面高精度的地形改正，得到了该区较为可靠的重力异常，使其地质意义更加明确．In a gravity prospecting area, it is unreasonable to use the same density value in the whole area to calculate Bouger correction value. In this paper, the writer applys a new geometry theory fractal analysis to gravimetric field. According to the minimum fractal dimension of anomaly, we can get the optimum Bouger correction density. Based on the new method, the gravity data in Dongchuan ore have been processed. We get the optimum Bouger correction density in different subregions, and furthermore we use triangular element model to calculate the terrain correction value, so we have got the better gravity anomaly which is less correlate with the terrain. By the new gravity anomaly, the mineralization belts are prognosticated.

关 键 词：分形分析 地形测量 地质效果 重力资料 地形改正 

分 类 号：P631.14[天文地球—地质矿产勘探] P217[天文地球—地质学]