Characterization of the Interactions between Cutting Tools and Rock during Tunneling from a Metallurgical and Rock Physical Point of View (C05)

子项目C5的目的是在岩石，粘性土和混合地面条件下隧道掘进过程中的工具-地面相互作用的基本理解。将通过高分辨率的实验技术研究这些材料中的地面开挖，其特征在于裂纹萌生和裂纹扩展，以及隧道工具的摩擦学响应（表面剥落、疲劳、磨损）。这导致了用声学测量方法确定岩石中裂纹的扩展，并用电子显微镜表征材料的微观结构。技术指南和优化工具的概念将来自实验和分析的结果。

Subproject C5 aims at a fundamental understanding of the tool-ground interactions during tunneling in rock, cohesive soil and mixed-ground condition. Ground excavation in those materials, as char-acterized by crack initiation and crack propagation, as well as the tribological response of the tun-neling tools (surface spalling, fatigue, abrasion) will be investigated by experimental techniques with a high resolution. This results in determining the crack propagation in rock by acoustic measur-ing methods and characterizing the material’s microstructure by electron microscopy. Technical guidelines and optimized tool concepts will be derived from the experimental and analytical find-ings.