CAJ | 학술논문

泥河铁矿床位于长江中下游成矿带内庐枞盆地的西北部，属玢岩型铁矿床，前人对该矿床的基础地质研究已有一定成果，积累了大量的数据资料，表明泥河铁矿床的形成与辉石闪长玢岩顶面形态关系密切。本文选择泥河铁矿床闪长玢岩为研究对象，以钻孔资料为依据，采用离散光滑插值法建立成矿岩体的精细三维模型，重现了闪长玢岩体的形态特征，将三维模型离散化后提取岩体顶面并通过三维形态分析方法进行数值分析，提取了岩体表面的隆起、凹陷形态，并与已知矿体进行对比，验证了该矿床成矿岩体隆起形态与矿体位置的对应关系。本文通过多次实验确定最佳表达的滑动窗口尺寸和与成矿岩体形态有关的找矿指标，结果证明利用10×10个单元的滑动窗口可以识别80％以上矿体。本文对三维成矿预测中三维空间分析方法进行探索，证明成矿岩体三维形态分析方法的有效性，这一方法可直接应用于与泥河铁矿床类似的玢岩型铁矿床三维成矿预测中。
니하철광상위우장강중하유성광대내려종분지적서북부，속분암형철광상，전인대해광상적기출지질연구이유일정성과，적루료대량적수거자료，표명니하철광상적형성여휘석섬장분암정면형태관계밀절。본문선택니하철광상섬장분암위연구대상，이찬공자료위의거，채용리산광활삽치법건립성광암체적정세삼유모형，중현료섬장분암체적형태특정，장삼유모형리산화후제취암체정면병통과삼유형태분석방법진행수치분석，제취료암체표면적륭기、요함형태，병여이지광체진행대비，험증료해광상성광암체륭기형태여광체위치적대응관계。본문통과다차실험학정최가표체적활동창구척촌화여성광암체형태유관적조광지표，결과증명이용10×10개단원적활동창구가이식별80％이상광체。본문대삼유성광예측중삼유공간분석방법진행탐색，증명성광암체삼유형태분석방법적유효성，저일방법가직접응용우여니하철광상유사적분암형철광상삼유성광예측중。
Nihe iron deposit,belonging to the porphyrite-type iron deposit,is located in the northwest of Luzong basin,a distict in the metallogenic belt of the Middle and Lower Reaches of the Yangtze River area.A lot of materials and data have been accumulated during long time basic geological study,showing that the Nihe iron deposit is closely associated with the top surface morphology of the pyroxenediorite porphyrite.Taking the intrusion (diorite porphyrite)as the study object,we establish the detailed 3D geological model based on the borehole data,using the discrete smooth interpolation method. Through three-dimensional morphological analysis method on the surface of the intrusion we reproduce the morphology of diorite porphyrite body and extract the uplift and depression area on the surface of the intrusion after discreting the 3D model.Compared with the existing orebody,the relationship between the metallogenic rock uplift shape and the position of ore body have been verified.After multiple processing tests,we determine the best local window size and prospecting indicators related to the mineralization,proving that it can recognize more than 80% ore by using sliding window of 10 × 10 unit.Considering the explorion in the 3D space analysis method for 3D metallogenic prediction,which demonstrates the effectiveness of metallogenic 3D morphological analysis method of rock mass,this conclusion can be directly applied to the porphyrite iron ore deposit 3D metallogenic prediction.