Abstract Andra performs a wide range of in-situ experiments at its Meuse/Haute-Marne Underground Research Laboratory (MHM URL). The purpose of these experiments is to study the feasibility of a radioactive waste repository in the Callovo-Oxfordian claystone formation (COx). An important research program has been conducted by Andra since 2005 to investigate THM response of the COx to a thermal load through laboratory and in situ experimentations. A step-by-step approach is followed, which starts with small scale heating boreholes (TED experiment) and extends to full-scale (ALC experiment). Modelling and interpretation of the TED and ALC experiments are conducted in the context of the Task E within the DECOVALEX-2019 framework. DECOVALEX-2019 is a multidisciplinary, co-operative international research effort focused on modelling coupled Thermal-Hydraulic-Mechanical-Chemical (THMC) processes. Based on the TED experiment measurements, the THM parameters of the COx are calibrated through a fully-coupled THM model using COMSOL. Then, the ALC experiment is successfully blind predicted and interpretatively modelled using the calibrated THM parameters of the COx and the proposed coupled THM model.

中文翻译：

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Callovo-Oxfordian 粘土岩的热-水-力学参数的校准和 ALC 实验的建模

摘要 Andra 在其默兹/上马恩地下研究实验室 (MHM URL) 进行了广泛的原位实验。这些实验的目的是研究在 Callovo-Oxfordian 粘土岩地层 (COx) 中建立放射性废物储存库的可行性。自 2005 年以来，Andra 开展了一项重要的研究计划，以通过实验室和原位实验研究 COx 对热负荷的 THM 响应。遵循循序渐进的方法，从小规模加热钻孔（TED 实验）开始，扩展到全规模（ALC 实验）。TED 和 ALC 实验的建模和解释是在 DECOVALEX-2019 框架内的任务 E 的背景下进行的。DECOVALEX-2019 是一个多学科、国际合作研究工作的重点是模拟热-水-机械-化学 (THMC) 耦合过程。基于 TED 实验测量，COx 的 THM 参数通过使用 COMSOL 的全耦合 THM 模型进行校准。然后，使用 COx 的校准 THM 参数和建议的耦合 THM 模型成功地对 ALC 实验进行了盲预测和解释建模。