基于GIS的矿体形态三维可视化定位研究——以喇嘛苏外围中段隐伏铜矿体为例

发布时间：2018-04-24 04:18

本文选题：GIS + 喇嘛苏外围　；参考：《地质论评》2017年06期

【摘要】：隐伏矿体的勘查一直是当下矿产勘查的热点,尤其是对矿体形态复杂的金属矿进行定位、定量、定概率研究。喇嘛苏外围隐伏铜矿体产于华力西早—中期斜长花岗斑岩与中元古界蓟县系库松木契克群下亚群泥化微晶灰岩的接触带部位,属于典型的接触交代矽卡岩型矿床,矿体形态复杂多变,给矿山企业的资源量估算带来很大不确定性。采用"桌面GIS+移动GIS数据集成+数据处理"的方法,克服了传统勘查方法单一与延时的缺点,解决地学测量数据"离散化"的状态,将研究区地质—物探—化探—遥感数据与图件集成,对综合异常区进行快速的圈定;建立集成研究区多源信息矢量化空间数据库,利用医学上的Marching Cubes方法,对侵入体与赋矿层进行三维可视化模拟,结合钻孔见矿位置佐证矿体形态展布变化以及预测东南向隐伏矿体,为矿山企业降低勘探采矿风险、缩短勘查周期提供数据支持。
[Abstract]:The exploration of concealed orebodies has always been a hot spot in mineral exploration at present, especially the localization, quantitative and definite probability study of metal deposits with complex ore bodies. The concealed copper deposit in the periphery of Lamasu occurs in the contact zone between the early to middle Hualixi plagiocline granitic porphyry and the mudded microcrystalline limestone of the lower subgroup of Kusong Muqie group of the Middle Proterozoic Jixian system, and belongs to a typical contact metasomatic skarn deposit. The complex and changeable shape of ore bodies brings great uncertainty to the estimation of the resources of mining enterprises. The method of "Desktop GIS Mobile GIS data Integration data processing" is adopted, which overcomes the shortcomings of traditional exploration methods such as singleness and delay, and solves the state of "discretization" of geoscience survey data. The geological, geophysical, geochemical and remote sensing data of the study area are integrated with the map, and the synthetic abnormal area is quickly delineated, and the multi-source information vectorization spatial database of the integrated research area is established, and the medical Marching Cubes method is used. The 3D visualization simulation of intrusive bodies and ore-bearing beds, combined with the location of boreholes to prove the distribution of ore bodies and predict the southeast concealed orebodies, provides data support for mining enterprises to reduce the risk of exploration and to shorten the exploration period.
【作者单位】：新疆大学地质与矿业工程学院;中亚造山带大陆动力学与成矿预测重点实验室;
【基金】：国家“十二五”科技支撑计划专题“南疆三地州地质矿产数据库建设及应用项目”(编号:2015BAB05B01) 新疆维吾尔自治区自然科学基金资助项目(编号:2016D01C067)的成果~~
【分类号】：P618.41

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