Study On Three - Dimensional Prospecting Model And Ore - Controlling Factors Of Silver - Polymetallic Deposit In Mengbai Cattle In Yunnan Province

Now, China is faced with crisis of resource exhaustion, study of mineral resources that cause more and more people’s attention. Three-dimensional geological modeling analysis and application of geospatial information, Based on the research of the three-dimensional geological model can clear deposit ore-controlling factors, the depth of concealed ore looking for help.This thesis bases on Bainiuchang siver-polymetallic deposit of Mengzi. Through the software, research is done to establish the three-dimensional geological model of this deposit and sum up the regularities of distribution of the orebody and major elements. And finally it can forecast the deposit. The main conclusions are appended below.(1) Bainiuchang silver polymetallic basic geological characteristics, ore is divided into five segments, outcropped the Cambrian, the mining area in lower Cambrian and lower devonian strata; Comparative development zone construction, north west within the mining area is the main structure, there are some other direction structure among them; Magmatic rocks in late yanshanian acid intrusive activities in this area, rock is less development, both show the invasion; Five section contains more than70orebody, including V1is the largest orebody in the mining area.(2) Mine information collected data, the establishment of geological database, basic statistical analysis of the raw data taken, it is concluded that the total number of samples, the maximum, small value, mean, standard deviation, variation coefficient, frequency distribution and so on. Using software dialogue Bainiuchang silver polymetallic mine simulation of three dimensional space form, respectively, set up the surface, tunnels, the3d model of the ore bodies.(3) Bainiuchang silver polymetallic ore controlling factors have been controversial, this study, based on the elements of space changes, tastes change rule, it is concluded that the ore-controlling factors for strata, magmatic rocks, structure.(4) The variation rules of spatial morphology are summarized though3D visualization of orebody. Baiyang-Chunxiandong has better exploration prospect in southwest. While the northwest of the orebody is connected with exploration line No.45. Both Duimenshan and Awei ore blocks tend to extend northward and southward. In conclusion, there is a big space and mineralization enrichment site in the deep north and south areas. Therefore, Ⅰ,Ⅱ, Ⅲ, IV-four targets are predicted.