In this paper, after a brief description of engineering geological properties of Ghomrood water conveyance tunnel project (lots 3 and 4 with a total length of 18 km), the actual performance of the machine during the excavation of tunnel through sedimentary and low to medium grade metamorphic rocks has been analyzed. Subsequently, using data collected during pre-construction and construction phases of the project, the relationships between rock mass properties and measured machine performance parameters have been investigated and proposed as a prediction model which can be used in future projects in which similar geological conditions are encountered. Results of analyses indicated that there are strong relationships between TBM performance and engineering geological conditions of the tunnel alignment.

本文在简要介绍了Ghomrood输水隧道项目的工程地质特性（3号和4号地段，总长18 km）之后，在通过沉积和中低品位的隧道开挖过程中机器的实际性能已经对变质岩进行了分析。随后，使用在项目的施工前和施工阶段收集的数据，研究了岩体特性与测得的机器性能参数之间的关系，并将其作为预测模型，可用于将来遇到类似地质条件的项目中。分析结果表明，隧道掘进机的掘进性能与工程地质条件之间存在很强的联系。