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针对施工期的中国锦屏地下实验室二期工程,利用三维激光扫描技术对各个实验室进行持续观测,得到开挖面原始点云数据,并通过一系列数据处理获取实验室轮廓变形、岩体结构及岩体破坏定量化表征信息。实践表明,利用CYCLONE软件处理原始点云数据,能够准确地获取实验室开挖后轮廓随时间的变化,精度满足工程要求,经现场围岩变形破坏特征证实数据处理结果符合实际规律;利用CYCLONE及基于结构面单位法向量的产状算法亦可准确快速地获取结构面产状,测量结果与传统方法结果相符。此外,利用CYCLONE、Geomagic Studio、3DMAX处理原始数据亦为统计实验室围岩破坏程度提供了简便高效的方法,获取的破坏区深度及体积与其他手段测量值基本一致。与点式监测技术相比,基于三维激光扫描的深埋硬岩隧洞监测与数据处理具备同时获取全场变形且快速、安全、高效的优势,对于研究深埋硬岩隧洞岩体力学行为是一种十分有效的技术手段。
For the second phase of Jinping Underground Laboratory in China, three-dimensional laser scanning technology was used to continuously observe the various laboratories to obtain the original point cloud data of the excavation face and to obtain the laboratory contour deformation through a series of data processing. The rock mass Structure and Quantitative Characterization of Rock Failure. Practice shows that using CYCLONE software to process the original point cloud data can accurately obtain the contour of the laboratory after excavation time changes with the accuracy to meet the engineering requirements of the deformation characteristics of the surrounding rock deformation confirmed that the data processing results in line with the actual laws of the use of CYCLONE and The production algorithm based on the normal vector of structure plane unit can also obtain the structure surface shape accurately and quickly, and the measurement results are consistent with those of the traditional method. In addition, using CYCLONE, Geomagic Studio and 3DMAX to process the raw data also provides a simple and efficient method for statistics of the degree of damage to the surrounding rock in the laboratory. The obtained depth and volume of the damaged area are basically the same as those measured by other means. Compared with point monitoring technology, the monitoring and data processing of deep-buried hard rock tunnel based on 3D laser scanning has the advantages of obtaining full-field deformation and being fast, safe and efficient. The mechanical behavior of rock mass in deep-buried hard rock tunnel is a Very effective technical means.