岩体随机结构面三维网络的生成和可视化技术

GENERATION AND VISUALIZATION TECHNOLOGIES OF THREE-DIMENSIONAL NETWORK OF ROCKMASS STOCHASTIC STRUCTURAL PLANE

在总结随机结构面网络模拟研究关于结构面三维网络生成和可视化成果的基础上,假定结构面为Baecher圆盘形,考虑结构面大小、位置、产状、隙宽等要素,采用泊松随机过程生成随机结构面网络的样本单元。其中较为详细地介绍了利用结构面的空间几何关系获得结构面网络的交会信息方法,利用FORTRAN90编程语言编制生成三维结构面(渗流)网络的专用程序FRCGEN-3D,该程序也适用于三维结构面网络模拟研究岩体楔形体稳定和连通率求解问题。为使复杂的三维结构面空间几何关系得到展示,进一步借用OPENGL强大的图形处理编程功能,在此基础上完善了一套完整的三维结构面网络模拟专用的可视化系统V-FNW。该可视化系统具有交互界面和三维图形渲染、旋转、交切等功能,为结构面网络模拟研究岩石力学和裂隙网络水力学提供了一个可视化平台,具有相对广泛的应用价值和研究价值。

Based on the research work on generation and visualization of three-dimensional stochastic fracture network simulation, a new three-dimensional stochastic fracture network model is established. It is assumed that the fracture shape of the model is a Baecher disc, the distribution is stochastic, and the correlativity of dimension, location, orientation and aperture of all fractures is independent. Based on these, a sample element of a three-dimensional structural plane network is generated separately by Poisson stochastic process. The spatial geometrical intersection information of the fractures and the boundary sides is discussed in detail. As a result, a program named FRCGEN-3D for three-dimensional stochastic fracture network of flow is developed by the FORTRAN90. To visualize the three-dimensional network model and check the data conveniently, a new specialized visualization system called V-FNW is developed with OPEN GL tools in Visual C＋＋, which is powerful and famous for graph process. The system V-FNW shows interactive interface with three-dimensional graph rendering, rotation and intersection. Finally, an example of a stochastic model with a set of specific data is given; and the result is reasonable. It provides a visual platform of fracture network simulation for rock mechanics and rock hydromechanics, which is very important and valuable in the further research.