| The doctoral dissertation, The Digital Mine and Comprehensive Information Minerogenetic Prognosis of Dachang Changpo-Gaofeng Area, is based on the scientific research requirements for the project, The Resources Exploration in Tongkeng Tin Deposit of Guangxi Nadan(Serial number:200545022), a sub-project of The Resources Exploration of The Crisis Mine in 2005 sponsored the Ministry of Land and Resources, P.R.C.With the rapid economic development since the reform and opening up in China, We are demanding for increasing mineral resources. But at present our country's major mineral resources to guarantee is in a very low level, which is very serious. Mineral resources serious throated to the country's economic security and social stability. In order to change this situation, we must rely on scientific and technological progress, and actively explore new, more effective modern metallogenic prediction theory and high-tech combination of mineral resources, projections system and enhancing the overall level of exploration and evaluation of mineral resources, and scientific prediction capabilities, search for and discovery of new varieties and types of mineral resources to increase the reserves of mineral resources for China's economic security, efficient and provide resources to ensure sustainable development.In the paper, connecting with the thesis research, targeting China's forefront mining and geological exploration development, we research and analysis of geological features based on the recent lava-sub lava discovery in Tongkeng deposit. Secondly, in view of domestic and international mining digital information system software, based on the own development "mathematical deposits-Economic Model" package, Surpac, Micrmine and Mapgis, we have created a Digital Mine Information System for the comprehensive information miner genetic prognosis and achieved three-dimensional digital geo-information model which gave anomaly bodies. Thirdly, under the guidance of the metallogenic theory, we established the information prospecting model, that can launch a comprehensive information metallogenic prediction by spatial analysis between mining geological characteristics and metallogenic information.In previous research results and to draw on the full context, we have carried out extensive field and mine geological survey and comprehensive study of indoor work, mainly including deposits geological characteristics of macro and micro studies, the typical anatomy of deposits, geochemical the determination of characteristics and deposit types and causes of patterns to explore mining of digital information systems research, DEPOSIT Physical characteristics of multi-source geo-information analysis and synthesis of information prospecting model studies, ore-controlling factors and prospecting criteria analysis, GIS-based spatial Analysis of integrated information metallogenic prediction, based on the digital deposit ore deposit deep edge prediction and so on, through the above-mentioned study is mainly supported by the following results:1.In Tongkeng area, we investigated through lava-sub lava and mineralization in the preliminary study of the relationship to obtain a new theoretical understanding of deposit mode of origin. Research shows that:In Changpo -Gaofeng diggings, in addition there is the traditional late Yanshan granite mineralization, the existence of at least the early Hercynian mafic submarine volcanic and sedimentary-exhalative mineralization and submarine exhalative hot water-the role of sedimentary mineralization and made a theoretical breakthrough in the area mineralization.2. Through the regional geological background and metallogenic geological characteristics of mining deposits that the district into a multi-source minerals, provide the source material of geological bodies are mainly the ancient pre-Cambrian basement, Cambrian, Devonian Department of carbonate rocks, basalt and mafic magmatic hydrothermal structures such as the late Yanshan. Changpo -Gaofeng diggings of the tin-polymetallic ore deposits in the role of experienced multi-stage multi-period, in order to "polygenetic" deposit.3. The use of system theory point of view, a detailed study of Changpo -Gaofeng diggings geotectonic evolution, occurrence condition and morphologic occurrence, mineral association, ore texture, metallotect, mineralization, metallogenetic epoch and deposit mode of origin. Pointed out that Changpo -Gaofeng diggings mining for volcanic exhalative sedimentary deposit, theoretical research, not only can obtain a theoretical breakthrough in ore genesis, but also for guiding the exploration of deposits of mines has obvious practical significance. This conclusion has been confirmed by the production of exploration.4. According to the study area strata, rocks and deposits of a comprehensive macro and micro data analysis and research that Changpo-Gaofeng diggings and North-South Summit to the synkinematic magmatic belt (east rock wall) evolution closely. In Devonian east rock wall was north-south contemporaneous fault, which controlled the devonian basic volcanic rock metallogenic mineralization and spout-sedimentary metallogenic mineralization.The ore-forming and North-South as a whole to the synkinematic magmatic belt of submarine volcanic-sedimentary hydrothermal sedimentary mineralization, jet stream-hot water deposition and post-structural transformation of magma-related hydrothermal superimposed mineralization is closely related with the rock-forming multi-stage, characterized by the formation of minerals and more. This is thus the establishment of integrated information metallogenic model provides a theoretical basis.5. By the digital mine study on Changpo -Gaofeng diggings mining geological characteristics (topography, stratigraphy, structure, igneous rock, drilling of the original halo and exploration and developing engineering) for full three-dimensional modeling, to achieve three-dimensional digital geo-information model. According to space geology analysis, it gave three anomaly bodies, which can optimize the comprehensive information targets.6. Based on volcanogenic sedimentary hypothesis in Changpo-Gaofeng diggings metalloginic geology, I compared in space between controlling ore factors (basement, strata, magmatic rock and structure) and metallogenic information (deposit, ore spot, mineralized spot, geophysical prospecting, geochemical exploration and remote sensing).I confirmed the affinity and found the comprehensive information prospecting model between controlling ore factors and metallogenic information by space analysis, which gave 10 targets.7. According to information correspondence analysis between three-dimensional target bodies and comprehensive information prospecting model, we gived 3 optimized prospecting targets combined with information of Mine Exploration Project. The south of Changpo-Bali-Deep Gaofeng target (â… -3), The Dachang fracture footwall of Changpo in deep Imbricate belt (â… -2)and The north of number V underground ore body and east of "east rock wall" target (â…¡-2),they provide a guarantee for the mine expansion and evaluation of geological prospecting.
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