复杂矿区三维地质可视化及数值模型构建

复杂三维地质可视化和数值模型的构建是采矿、岩土及水利水电工程中常常遇到的关键问题。针对数值模拟软件在复杂矿区地质体模型构建及单元网格划分等前处理问题上存在的不直观、工作量大等缺点，结合矿业软件在复杂三维地质体建模的强大优势，在研究线框模型和块体模型差异的基础上，提出了基于线框模型的复杂矿区三维地质可视化及数值模型构建技术。根据线框模型特点不同，以地表和采空区模型为型，分别阐述了基于Surpac的表面模型和实体模型无缝转换成MIDAS/GTS数值模型的有效方法，并将该技术成功应用于冬瓜山铜矿复杂采空区群围岩稳定性研究中。结果表明，该方法是可行、有效的，从而为矿山开采设计、安全分析及复杂地质体结构的岩土工程数值模拟分析提供了一种新的建模方法。

Numerical modeling and geological body visualization for complex mine

The construction of the 3D visualization model and the numerical model of complex geological body is critical in mine, geotechnical, hydraulic and hydropower projects. Aiming at the disadvantages of modeling complex geological body of mine by numerical simulation software, such as the modeling process complex and difficult and mesh generation has great workload, Combined with the advantages of modeling complex geologic body of mine use mine software, on the base of studying the differences between wireframe model and block model, a kind of new method of numerical modeling and geologic body visualization based on complex mine is proposed based on wireframe model. According to the different characteristics of wireframe, taking surface and cavity model as examples, an effective method of converting Surpac surface model and solid model into MIDAS/GTS numerical model exactly is researched; this method has been used to research the cavity stability analysis of Dongguashan Copper Mine successfully. The results show that the new modeling method is feasible and effective, so as to offer a new modeling method for mine design, safety analysis and complex geological body rock soil engineering numerical simulation, etc.