Study On Deposit Simulation And Mining Visualization Design Technology Of Sedimentary Bauxite

In China, the technical level of mining industry can't keep up with the need of the practical production due to the straitjacket of traditional mining model for a long time.After entering the WTO, Chinese old mining industry faces the opportunities and challenges at the turn of the century when information technology develops so rapidly. As long as the mining enterprise take the lead to innovate, treat the information resource as one of important strategic resources of mine and carry out the overall planning development and the comprehensive utilization, it will win in the modern competition and step into the sustainable development gradually.According to the resource conditions and the characteristics of mining technology of Nanchuan bauxite, this thesis integrates the digital mine concepts into its mining design, production management, investment decision-making and so on, and has obtained the following research results:1) Advanced digital mine software DIMINE was used to establish three-dimensional solid model of several mining areas of Chongqing Branch of CHALCO, which reflected the space form of various mine project entities accurately, intuitively and vividly. At the same time, it laid a solid foundation for conducting the following exploration, mining design and engineering construction.2) Based on the drilling database of Huihe Mining District in Nanchuan bauxite, statistical analysis of sample and space variation functional analysis of spatial data were made to elaborate the selection principle of estimation methods. Meanwhile, distance power inverse ratio methods and traditional methods were adopted respectively for grade estimation of useful chemical components of the orebody. Then the estimated block mode was displayed according to respective grade level of A/S, A12O3 and reserve statistics were completed in the light of height of sublevel. The author conducted comparative analysis for reserve calculation results based on different estimation methods, and pointed out the advantage of traditional methods (block method particularly). An actual dynamic reserves estimation was carried out by using this method, and the spatial distribution characteristic of ore grade and the resources reserves distribution of Hui-he Mining District were clarified basically. The accuracy and validity of geological database and ore-body models were further verified, which can provide references of resource aspects for the follow-up production exploration design and mining design.3) Based on the fuzzy preferential relation comparison method, lots of dynamic and static, fix and non-fix quantified influence factors working on the mining method were taken into account. Membership degrees of the three alternative schemes were calculated and their priority orders were determined, which provided the reliable basis for the mining visualization design.4) Man-machine interactive three-dimensional mining optimization design technology was proposed, and the general ideas of the technology and the optimization of objectives and methods were described. with the aid of this technology, based on the established three-dimensional solid model of the mine, the extraction units were divided according to the resources distribution of the mining area and the metal market prices, and then combining the occurrence regularity of ore-body, the extension trends of rock mass and the outcrop feature of faults, in line with the maximization of resource utilization and the minimization of exploitation cost, the production exploration design and mining single design were completed based on the space constraints constructed by existing projects.5) With the design method which combined parallel holes and fan-pattern holes, the shallow hole blasting visualization design was carried out in the No.3 loading ore tunnel of Hui-he mining district. The design parameters were modified and edited interactively to generate the blasting entity and two-dimensional blast-hole construction cards, which can be used to guide the field construction.6) By analyzing the basic characteristics of the production of Huihe Mining District and referring to the requirements of production plan scheduling, the key technologies of 3D visualization plan formulation were used tentatively and the initial plan arrangement results were formed.This study sufficiently indicates that the digital mine technology is important to improve labor efficiency of the mining industry, change safety production situation, and promote the green coordinated exploitation.