Foundation On Geology And Mining Database And Research On Concealed Ore Body Three-dimensional Quantitative Prediction

This thesis has taken the research program of "Foundation and development on geology and mining database of Dachang ore field" as a basis.Focusing on the issue of assessing and prospecting replaceable resource of crisis mines, the author has dived into the research on the basic theories and implementing methods of the3D digital modeling and characterization of mineral deposit and the stereo quantitative prediction of concealed ore body by taking Dachang tin polymetallic ore deposit as the experimental platform. This research assimilates modern theories and methods of quantitative appraisal of mineral resources,3D geoscience modeling,3D GIS, etc. Following the data-center construction model, the central database for geology and mineral resource is devised and the management system is developed with the geological exploration raw data of Dachang tin polymetallic mine and Xitieshan Pb-Zn mine. This paper proposes and explores the theory of3D digital deposit oriented to the objective characterization of mineral deposit, studies and implements the spatial data model and spatial database of digital deposit, the geometric and discrete models of geological body, the digital modeling of geological field and the spatial analysis of geological ore-controlling factors. And then, the stereo quantitative prediction theory and method of concealed ore body suited for prospecting replaceable resource of crisis mine is set up.The stereo quantitative prediction theory and method of concealed ore body based on digital deposit established in this research can be summed up as follows. Based on the practical mineral exploration raw data, guided by geological knowledge and models such as qualitative analysis of ore-controlling conditions, directed by the quantization of geological conditions’ ore-controlling effects, with the methodology of3D digital deposit theory, the mineralization mathematical models defining the mapping relations from the geological ore-controlling indexes to the mineralization distribution indexes can be built and then the quantitative inference and prediction can be made from the models, by means of building the3D digital models of geological objects and geological fields and extracting the quantitative indexes of the geological ore-controlling effects.This thesis mainly discusses the foundation on geology and mining database of concealed ore body by applying the modern technologies of large-scale relational database and internet technology ect, in order to informationise the management of a large quantity of geology information in Dachang ore field. Meanwhile, regard geology mine database as a resource platform, try-prospecting research on concealed deposit is carried out for the prediction of quality, location and quantity to substantially speed up the exploration procedures for concealed deposits, advance the precision of mine exploration and reduce the risk of mine exploration and its cost.This thesis mainly focuses on the following research aspects:1. From the description of mineral exploration and deposit the perspective of research on the theory of digital deposit is constructed of digital spatial data model that deposits Geological Spatial Object Model;2. Geology situation analysis of Dachang ore field deposits and its mine formation mode;3. Design and foundation of special database on concealed ore body prospect;4. Deal with special database of prospect in advance;5. Quantitative analysis on deposit geology characters6. Foundation of geometric modeling of geologic body7. Quantitative analysis of ore controlling geologic situations and modeling of ore controlling effects quantitative model8. Foundation of three-dimensional Mathematical model9. Three-dimensional quantitative prospect of concealed depositThe research program has aimed at setting up giant-scale central information database of geology mining in Dachang ore field, the development of its management system, the foundation of Mathematical model of polymetallic tin deposit, realization of three-dimensional location and quantitative prospect of concealed ore body in deep and boundary areas. Meanwhile, the following research achievements have been accomplished. 1. Geology mining materials were calssfied scientical.2. Foundation on geology and mining database of concealed ore body in Dachang ore field, realization of the digitalization of geology deposit information and electronification storage, offering cohesive and standardized data resources platform of sharing geology mining materials, future research, mine exploration, production and informationization development.3. Digitalized the information on geology body, geologic effects and deposit objects; created three-dimensional unit Rasterizing Technique in geologic space, discretization theory and methods on continuous Geological body and continuous geologic effects.4. Foundation of geometric modeling of geologic body; realization of the quantification of geological controlling mine effects; foundation of higher curved surface equation and usual solution of nonlinear optimized matter.5. Summarized regulations and scales of mine formulation, foundation of3D deposit digital model of quantitative revealing of mining formation rules, including deposit objects, deposit structures and mineralization Functional model; first suggested deposit objects, deposit structures and new theory of mineralization functional model;6. Based on quantitative prospect model, concealed mine body prospects in deep and boundary areas have been carried out, suggested3D prospect result on location, quality and quantity, chart of achievements’prospects, offer references for mine exploration ranges; put forward the concept of extrapolated boundary conditions of deposit digital model, created automatic extrapolated theory and ways of controlling mining space3D variable in geological space.This research program has cherished reality significance, theory value and benefited the social economy as well:1. Foundation on geology and mining database of concealed ore body management realized of the informationization of geology mining information and formed its storage version which could be reserved permanently. Offer a cohesive and standardized data resources platform of mining exploration, production and informationization for future subject research. 2. Found quantitative model of geology controlling effects and deposit3D mathematical model, which has offered quantitative descriptions on geology controlling mine rules in Dachang polymetallic tin deposits and mining formation mode and revealed the rules of concealed geology controlling mining. From the quantitative perspective, we have gained a good knowledge and deepened our understanding of the rules of mine formation in Dachang tin ore field, which has laid a theory foundation for the quantitative comparison for mine exploration and the advance of mine formation theory.3. Compared with traditional ways of mine exploration,3D quantitative prospect has the advantage of relatively higher data precision and deeper exploration levels which would be able to instruct mining exploration point accurately advance its accuracy and reduce its risks and cost.4. Digitalize geology mining information, material management, geology body, geology effects and deposit objects; accomplished the research achievements and practice experiences on digitalization and informationization; provided practical references for the realization of digitalized mine body and groups in mine enterprises and limited groups.5. This research has played a national leading role in geology mining database field; accomplished great theory achievements on geometric modeling of ore body and digitalization, deposit3D mathematical model and3D quantitative prospect of concealed mine body, which has ranked top around the world.6. According to the chart, finding the area on concealed mine body. And later some mine bodies about40millions RMB were found. So the research program won the Second Place Winner of the nonferrous metals industry Science&Technology.