Effective 3D data visualization in deep shaft construction

大深度立坑掘削における3次元可視化技術の有効性の検討

稲垣 大介*; 津坂 仁和*; 青柳 和平  ; 名合 牧人*; 井尻 裕二*; 重廣 道子*

Inagaki, Daisuke*; Tsusaka, Kimikazu*; Aoyagi, Kazuhei; Nago, Makito*; Ijiri, Yuji*; Shigehiro, Michiko*

In the Horonobe Underground Research Laboratory located in Hokkaido, Japan, "3D geological structure/construction data visualization system" has been employed to facilitate observational construction. Using this system, geological data, measurement data, construction data and prediction analysis results are visualized and integrated comprehensively as the construction proceeds. The planned support pattern was, for instance, examined according to the visualized data. Integrating the data of seismic reflection survey and the grouting results into the system, the estimated distribution of faults were revised and the potential area of support instability was determined; this approach has been proven to be effective, completing the shaft construction without any troubles. In addition, the 3D visualization system allows to share clear and common understanding about geological condition and deformation behavior of rock mass among the construction team members. Thus, the system will contribute to more successful implementation of observational construction in understanding rock mass behavior and ensuring optimal structural support and construction safety.