Deformation zones and fractures are of major importance to engineering and to the characterisation of the mechanical- and hydraulic behaviour of rock. In this paper we demonstrate how structural mapping can provide key information on fracture sets and their properties, and how it can be used to investigate conformity between different working scales. This is shown by the detailed structural mapping related to the experiment “BRIE” - Bentonite Rock Interaction Experiment. “BRIE” was carried out in a tunnel of the Äspö Hard Rock Laboratory, Sweden, in crystalline rock. The implemented approach relied on a multidisciplinary and trans-stadial investigation to compile and interpret all the hydrogeological, structural and rock mechanical constraints as inputs to modelling. To this end, available data from all BRIE construction- and experimental stages were used to characterise natural and induced rock stresses. Results from detailed structural mapping of the tunnel and drill cores recovered from the tunnel floor were key for sound rock mechanical modelling and were successfully integrated with the available hydrogeological observations. Structural mapping was used to define five systematic fracture sets, key fractures and their properties (size, friction angle and normal stiffness) and to establish a simple deformation history. Furthermore, the structural features exposed in the studied tunnel and in the logged BRIE cores were compared with those of an adjacent Äspö HRL tunnel. Both sites structurally fit the sub regional tectonic framework, thus showing conformity between very different observation scales.

变形区和裂缝对工程以及岩石力学和水力特性的表征至关重要。在本文中，我们演示了结构映射如何提供有关裂缝集及其属性的关键信息，以及如何将其用于研究不同工作规模之间的一致性。通过与实验“ BRIE”（膨润土岩石相互作用实验）相关的详细结构图可以看出这一点。“ BRIE”是在瑞典ÄspöHard Rock实验室的隧道中的结晶岩中进行的。实施的方法依赖于多学科和跨台地调查，以汇编和解释所有水文地质，结构和岩石力学约束，作为建模的输入。为此，从BR​​IE所有施工阶段和实验阶段获得的数据均用于表征自然和诱发的岩石应力。隧道和从隧道底板回收的岩心的详细结构图绘制结果是进行可靠的岩石力学建模的关键，并且已成功与现有的水文地质观测相结合。结构映射用​​于定义五个系统性裂缝集，关键裂缝及其性质（大小，摩擦角和法向刚度），并建立简单的变形历史。此外，将研究隧道和测井的BRIE岩心中暴露的结构特征与相邻的ÄspöHRL隧道的特征进行了比较。这两个站点在结构上都适合次区域构造框架，因此显示了非常不同的观测尺度之间的一致性。