基于Surpac的三维地质建模及可视化研究
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摘要
目前,三维地质建模技术和三维可视化技术在我国矿业界逐步得到广泛的应用,“数字矿山”是未来矿业发展的必然趋势,为了加快南京栖霞山铅锌矿实现“数字矿山”的步伐,本文借助三维矿业软件Surpac,以南京栖霞山铅锌矿的地质资料为基础,深入研究了构建地质数据库、三维地质体模型、品位模型的基本原理和具体方法,探讨了地质数据库、采场实体模型、硫矿品位模型的三维可视化显示及其在矿山中的应用。主要工作及研究成果如下:
     ①深入学习了三维矿业软件Surpac,分析了国内外三维矿业软件的研发及应用现状,研究了Surpac在国内的应用研究现状,探讨了建立“数字矿山”的必要性。
     ②收集整理南京栖霞山铅锌矿地质资料,如工程概况、地质条件、构造特征、岩石特征、矿体特征、采矿方法等,对采场各个分层的CAD图进行数据筛选,创建其矢量图,为构建采场的实体模型做准备。
     ③建立了南京栖霞山铅锌矿的生产勘探地质数据库,探讨了地质数据库的结构和数据的描述形式,并且对地质数据库进行了三维空间显示,对铅锌元素的品位空间分布、内在属性特征及其变化规律进行了分析研究。
     ④对实体模型的构建原理进行了深入的分析研究,总结出了构建实体模型的具体方法,构建了-425中段每个采场各个分层实体模型及-375中段、-425中段巷道模型,最终形成-425中段采场实体模型,可以全方位的精确显示每个采场各个分层的空间分布形态,可以进行任意方向上的剖切、体积计算、漫游等,对矿山的设计与生产管理有一定的指导意义。
     ⑤在南京栖霞山矿体模型的基础上,对块体模型的构建原理进行了深入的分析研究,总结出了构建块体模型的具体方法,本文采用距离幂次反比法对块体模型赋值,构建矿体的品位模型,并对其在矿山中的应用进行了探讨。
Currently, 3D geological modeling and visualization technology have been widely used in China's mining industry, and "Digital Mine" is the inevitable future trend of the mining industry. In order to quicken "Digital Mine" step of Nan Jing Qi Xiashan Lead-Zinc Mine, this paper has studied the basic principles and specific methods to build geological database, 3D geological model and Grade model with the help of 3D mining software Surpac, based on the geological data of Nanjing Qixiashan Lead-Zinc Mine, and explored 3D Visual Graphic Display Method of the geologic database, stope solid model and Sulfur body grade model and the application of this technology in the mine. The main work and research results are as follows:
     ①The present development situation of 3D mining software at home and abroad have been analyzed, and 3D mining software Surpac has been especially researched. Besides, it has discussed the necessity of establishing "digital mine".
     ②In preparation for construction of stope solid model, the geological data of Nanjing Qixiashan Lead-Zinc Mine such as the engineering general situation, geological conditions, character of the rocks and ore bodies and mining methods have been collected, and the data of CAD map in each layer has been selected and then the vector has been created.
     ③Geological database for exploration and production of Nanjing Qixiashan Lead-Zinc Mine has been established, and description form of its structure and data have been explored, and its 3D Visualization has been displayed, and the spatial distribution of lead and zinc, their qualities or characteristics inherent and variation law have been analyzed.
     ④After researching solid model of architectonic principles, this paper has summarized specific techniques of constructing solid model, building solid model of various layers of each stope in the middle section of -425 and tunnel model in the middle section of -375 and -425, eventually forming solid model of stope in the middle section of -425, which could accurately display the spatial distribution pattern of various layers of each stope in all directions and cutting in an arbitrary direction, volume calculations, roaming, etc. So it is very important to the design and production management of ore mine.
     ⑤Based on the ore bodies model of Nan Jing Qixiashan, this paper has thoroughly analyzed construction principles of block model and evolved the specific approach of constructing block model. Besides, This paper has also adopted the Inverse method from the power law to assign a value to block model, and explored its application in mining.
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