CAJ | 학술논문

　　2006年TheLeadingEdge第一期详细介绍了磁力梯度张量的理论、仪器与野外试验结果，磁力梯度张量技术已成为磁力勘探新的热点之一。笔者介绍了磁力梯度张量的概念及优点；利用频率域与空间域方法把井中三分量磁测资料换算磁力梯度张量；根据联合反演原理与欧拉反褶积方法，推导了磁力梯度张量的联合反演方程，该方程通过权函数矩阵可以灵活对一个或多个分量反演，比文献[14]方法更具普遍性。理论模型结果表明，磁力梯度张量反演方法对井底异常的定位准确，对于3D模型，一口钻井的资料也能较好确定空间位置。将该方法用于湖北大冶铁矿18-2井三分量磁测资料的解释，得出磁力梯度张量的欧拉解集中在100～180m与500～550m两个深度，与钻探结果十分吻合。该结果证实了地质上关于铁矿体分布具两个台阶的推论，对大冶铁矿的深部找矿具有实际意义。
　　2006년TheLeadingEdge제일기상세개소료자력제도장량적이론、의기여야외시험결과，자력제도장량기술이성위자력감탐신적열점지일。필자개소료자력제도장량적개념급우점；이용빈솔역여공간역방법파정중삼분량자측자료환산자력제도장량；근거연합반연원리여구랍반습적방법，추도료자력제도장량적연합반연방정，해방정통과권함수구진가이령활대일개혹다개분량반연，비문헌[14]방법경구보편성。이론모형결과표명，자력제도장량반연방법대정저이상적정위준학，대우3D모형，일구찬정적자료야능교호학정공간위치。장해방법용우호북대야철광18-2정삼분량자측자료적해석，득출자력제도장량적구랍해집중재100～180m여500～550m량개심도，여찬탐결과십분문합。해결과증실료지질상관우철광체분포구량개태계적추론，대대야철광적심부조광구유실제의의。
SincethepaperpublishedinTheLeadingEdge(No.1issueof2006)describedindetailthetheory,equipmentsandout-doortestresultsofmagneticgradienttensor,thistechnologyhasbecomeoneofthehottopicsofmagneticprospectingmethods.This paperdescribestheconceptsandadvantagesofthemagneticgradienttensor.Bothfrequencyandspatialdomainmethodsareusedto transferboreholethree-componentmagneticdatatomagneticgradienttensor.AccordingtothejointinversionprincipleandEulerde-convolution,thejointinversionequationsformagneticgradienttensorarededuced,whichenableustoflexiblyinverseoneormore componentsbasedonaweightedfunctionmatrix,andthetechnologyismorecommonthanthemethodmentionedinReference[14]. Thesimulatedresultsofsyntheticmodelsrevealthatthemagneticgradienttensorinversionmethodcanbeaccuratelyemployedtolocate themagneticbodyaccordingtoboreholebottomanomalies.Concerning3Dmodels,onlyoneboreholemagneticdatacancalculatethe locationsaccurately.Moreover,themethodwasappliedtointerpretingthethree-componentmagneticdataofNo.18-2drillinDayeiron miningarea,Hubeiprovince,andtheresultsindicatethatthedeconvolutionsolutionsofmagneticgradienttensorareconcentratedon the100to180mand500to550melevationsthatareinaccordancewiththedrillingresults.Theresultconfirmsthegeologicalinfer-encethattherearetwostepsofironorebodies,whichhaspracticalsignificanceinsearchfororebodiesatdeeperlocationsinDayeiron miningarea.