工程岩体开挖过程全空间块体搜索及其系统研制

在现场结构面非接触摄影技术采集的基础上,探讨岩体扰动区内所有块体的全空间切割与搜索问题,给出了包括三维结构面网络模拟、结构面与边界面的交线分析、封闭块体搜索等切割搜索过程,提出一种新的块体识别新方法.并将该搜索技术接入用自行开发研制的三维数值分析系统GeoSMA-3D,进行岩体开挖过程全空间块体搜索研究.工程算例表明:该系统具有可以动态添加结构面,适合建立开挖过程复杂几何模型等优点,系统通过人机交互界面或文件形式进行数据输入,计算结果图形化显示,并与AutoCAD等通用图形软件接口,可方便实现软件操作使用.

Quickly Spatial Identification Process of Blocks During Rock Excavation and Its System Modeling

Based on the digital photogrammetry, the spatial searching for all blocks in a disturbed zone of rock mass was discussed, and a new searching technique was proposed for the identification of blocks. With the searching technique introduced into the 3D digital analysis system-the three-dimensional geotechnique structural modeling and analysis system (GeoSMA-3D) developed by ourselves, the spatial searching for all blocks is available to rock excavation. A numerical example showed that the system has the advantages of adding structural planes dynamically and modeling the geometrically complex excavation process. Moreover, the system is easy to implement the operation of software via data input through man-machine interface or documental representation, graphical representation of computed results and interfacing with general-purpose graphical software, such as AutoCAD. Therefore this method shows its strong commonality and reliability, and it can also be used for rock tunnel excavation process advanced prediction and reinforcing scheme optimization.