分形理论在富钴结壳圈矿中的应用  

The application of fractal theory on outlining the ore block of Co-rich crust

作　　者：周林立[1] 胡光道[1] 

机构地区：[1]中国地质大学数学地质遥感地质研究所,武汉430074

出　　处：《矿产勘查》2010年第2期173-177,共5页Mineral Exploration

基　　金：大洋"十五"课题(编号:DY105-01-01-12)资助

摘　　要：在大洋富钴结壳资源量计算方案中待估块段的圈定是影响资源量可靠性的最主要因素。因为结壳资源勘查网度比较稀,根据勘查网度确定的待估块段的面积是比较大的,即使是对少数待估块段的误判,其引起的资源量的增加或减少也十分可观。选取了中太平洋海山调查区中3个有代表性的海山,利用海山地形等值线的分形参数,探寻了海山富钴结壳分布、富集与海山地形分形特征的关系。研究结果表明:海山地形等值线的盒子维数值可以用来判断结壳空间分布的状况,通过分形阀值或阀值区间对海山待估块段进行圈定具备理论和方法依据。Outlining the block to be estimated is the most important factor to influence the reliability of resource amount in estimating resource of cobalt - rich crust. The area of estimated block determined by the large exploration net space is relatively large, so even a small misjudgment on only a few blocks could result that the increase or decrease in the resource amount is considerable. This paper, taking three typical seamount in the study area in the Pacific Ocean as examples, uses fractal parameters of seamount topographical contour to seek the relationship between the distribution and accumulation of cobalt - rich crust and the seamount topography fractal characteristic, and provides quantitative basis for block estimation. Therefore, we conclude that FBD values of seamount topography contour can be used to judge the spatial distribution of cobalt - rich crust, and delineating estimated blocks through threshold value or valve range is reasonable in the fields of theory and methodology.

关 键 词：富钴结壳 分形理论 待估块段 分形阈值 

分 类 号：P628[天文地球—地质矿产勘探] P744.3[天文地球—地质学]