| The selected topic of this thesis originates from the National Crisis Mine Replacement-resourse Prospecting Project "Replacement-resourse Prospecting in Xiao he-Shimenkan Ore Section of Liuju deposit,Dayao county,Yunnan province",it deep analysis geochemical characters and the spatial distribution pattern of the study area,aims at recognating the metalloginic geological characters and regularities more clearly and providing technical support for concealed deposit location prediction,also lay a foundation for later informatization of production and management to the mine.At first,the reginal metalloginic background and geological characters of Xiaohe-Shimenkan ore section is analysised by summarizing the geological data,then the metalloginic geological regularities is summarized.Though analyzing the geochemistry data of each hosted strata and the whole section with mathematical geology methods and obtaining mineralizd element association in each group data,it show that there were multi-stage hydrothermal activities and the ore body was controlled by tectonics,and Cu,Ag is the best element association in orebody location.Based on analyzing the data of boreholes and geological sections in this ore section, building the 3D strata and orebody model between 140 and 164 exploration lines which can visual display the spreading regularity of the strata and orebody.Detail describing the method and steps of building block model and 3D geochemistry model,it can be easily queried the distribution of elements value and abnormality.After select Cu,Ag,Hg and a value of factor analysis F3 as research object,cut the profiles of 150,156,and 164 exploration line from the 3D geochemistry model and abnormal contour maps were be provided.Through the further analyzing,it is show that Cu,Ag association and F3(-Cu,-Hg,-Ag)are the best orebody location marks,and the orebody pitching to southwest along the stratum.At the most,it is no evidence which can show the orebody's direction will change. |
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