基于三维地层模型的岩体质量可视化分级

岩体质量分级是岩石力学学科研究的热点和难点，在水电工程建设中具有重要的实际意义。在对岩级分类方法进行大量研究之后，工程人员对岩级结果的表达有了更高的要求，传统的方式已不能满足人们空间分析的需要，研究岩体质量可视化分级十分必要。首先，利用NURBS工具以一种新的数据结构和方法重建三维地层模型，然后，基于岩体质量分级结果，按照空间图形集合运算算法生成相应的三维岩级模型。将上述理论方法应用到锦屏一级水电工程岩体质量分级评价中，并进行了一系列与工程相关的岩级可视化分析，获得了很好的应用效果。

Visualization of rock mass quality classification based on 3-D strata model

Rock mass quality classification is an interesting and formidable issue in the study of rock mechanics, and it plays a very important role in the hydropower engineering construction. With the study of many classification methods, the engineers desire higher regalements for the expression of rock classification. Traditional ways cannot meet the demand of spatial analysis already, and the visualization of rock mass quality classification will be very necessary. Firstly, with a new data structure, 3-D strata model is reconstructed using NURBS tool. Then, according to the classification results, the corresponding 3-D classification model can be generated by set operation algorithms of space pattern. The theory is applied to rock mass quality evaluation of Jinping first-level hydropower engineering successfully, and a series of visual analyses correlating with engineering design are also operated. This study acquires very good effects in the practical application.