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

The Orientation of 3D Visualization Based on GIS——A Case Study of the Concealed Copper Orebody in Central Section of the Lamasu Peripheral Deposit

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。

The exploration of concealed ore bodies has been the hot spot of mineral exploration, especially for the metal ore with complex ore body shape, quantitative and definite probability. Lama’s peripheral concealed copper ore body is produced in the contact zone of Huaxi west early—middle plagioclase granite porphyry and Mesozoic Jixian line Kusong wood Chick subgroup of muddy microcrystalline limestone, which belongs to typical contact. In addition, the ore body is complicated and varied, which brings great uncertainty to the resource estimation of the mining enterprises. The method of “desktop GIS ＋ mobile GIS data integration ＋ data processing” is adopted to overcome the shortcomings of single and delay of traditional exploration methods, to solve the “discretization” of geo survey data, to integrate the data of geophysical and remote data, And the three dimensional visualization of the intrusive and metallogenic layers was carried out by using the Marching Cubes method in the medical field, and the shape of the ore body Changes in the forecast and forecast the southeast to the hidden ore body, mine companies to reduce the risk of exploration and mining, shorten the exploration cycle to provide data support.