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3D Laser Modelling of the Onkalo Geological Repository

机译：Onkalo地质库的3D激光建模

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Finland is constructing an underground rock characterisation facility, known as Onkalo at Olkiluoto, Eurajoki. This is the initial phase towards the first geological repository for final disposal of spent nuclear fuel. Underground construction work started in 2004. In July 2007, the length of the access tunnel was 2194m, reaching a depth of 207m. Geological repositories introduce major technical challenges for nuclear safeguards. Both the IAEA and DG-TREN are looking into new methodologies and technologies to assist them in future Safeguards. Within the framework of collaboration between the JRC, European Commission's Research Centre and STUK, Finnish Radiation and Nuclear Safety Authority, it was decided to make a field trial of JRC's 3D Reconstruction and Verification laser technologies to accurately model the Onkalo tunnel. The exercise aimed at sharing information and practices concerning measurement equipment and methodologies including data processing and visualisation software. The 3D model documentation provides an accurate 3D verification of the underground facility. The documentation can be relevant to detect future changes indicating the presence of undeclared rock spaces. The paper presents the details from this field modelling exercise. The exercise showed that (a) 3D laser technologies can be easily deployed to create accurate models of sites "as-is" and (b) it is possible to perform design verification of large underground facilities.
机译：芬兰正在Eurajoki的Olkiluoto建造一个地下岩石表征设施，称为Onkalo。这是通往第一个地质处置库的最终阶段，以最终处理乏核燃料。地下建设工作于2004年开始。2007年7月，通道的长度为2194m，深度为207m。地质资料库为核保障提出了重大技术挑战。 IAEA和DG-TREN都在研究新的方法和技术，以协助他们制定未来的保障措施。在JRC，欧洲委员会研究中心和STUK，芬兰辐射与核安全局之间的合作框架内，决定对JRC的3D重建和验证激光技术进行现场试验，以准确地模拟Onkalo隧道。该练习旨在共享有关测量设备和方法的信息和实践，包括数据处理和可视化软件。 3D模型文档提供了地下设施的准确3D验证。该文档可能与检测将来的变化有关，这些变化表明存在未申报的岩石空间。本文介绍了此现场建模练习的详细信息。演习表明（a）可以轻松部署3D激光技术以按原样创建准确的站点模型，并且（b）可以对大型地下设施进行设计验证。

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