岩石块体系统构建方法及可视化程序开发

The Method of Building Rock Block System and Development of Visual Program

根据临空面与结构面构建岩石块体系统是一项复杂而基础的研究工作。以平面对多面体的空间切割算法为基础,通过单元离散、单元聚合等方法实现复杂岩石块体系统的构建,并对关键算法进行详细说明,利用MFC和OpenGL,开发了可视化程序。结合一露天矿多阶边坡工程,展示了具体实现过程。首先,利用AutoCAD中的四边形单元构建边坡临空面模型。其次,采用投影法实现岩体模型的网格划分,从而将结构面对复杂岩体的切割转化为对柱状单元体的切割。最后,消隐藏网格,聚合单元,实现复杂块体模型的构建。与传统方法的计算结果进行对比,验证了此方法用于复杂岩体模型构建的有效性和优越性,为实际工程提供可靠依据。

It is a complex and fundamental research work to build a rock block system according to free face and discontinues.Based on the plane cutting block algorithm,complex rock block system is built by means of unit discrete and elemental aggregation,and that the key algorithms in detail are explained.The visualization program is developed by using MFC and OpenGL.Combined with an open-pit mine multi-stage slope project,the concrete realization process is demonstrated.First,the quadrilateral element in AutoCAD is used to construct free surface model of the slope.Secondly,the projection method is used to realize the mesh division of the rock mass model,so that the algorithm of plane cutting complex rock mass is transformed into algorithm of the cutting the columnar element.Finally,the hidden mesh is eliminated,the block element is aggregated,and the complex block model is constructed.Compared with the calculation results of traditional methods,the effectiveness and superiority of this method for the construction of complex rock mass models are verified,which provides a reliable basis for practical engineering.