The interaction of machine and rock mass analysed using TBM data and rock mass parameters /

Abstract

Statistical investigations of TBM data and rock parameters have shown that interactions determined theoretically or in the laboratory are often not realistic because the interaction of the machine with the rock mass is considerably influenced by the type of machine in use, the machine driver and the characteristics of the rock mass. Evaluations of excavation data have shown that the maximum net advance rate is not produced by the maximum thrust force, even in the same rock type. Individualised optimisation of the interaction on the basis of continuously recorded machine data and basic information about the rock mass (type of rock, degree of jointing), which can be determined by geological and geophysical investigations during tunnelling, is therefore of particular significance for economical tunnelling. The evaluation of these data should not replace but rather supplement the control of the machine by the driver. IntroductionPublications have described many ways in which the machine interacts with the rock mass, including: -sticking of the machine in squeezing rock [28] The following discourse attempts to analyse the interaction of machine and rock mass using selected machine data and rock mass parameters in relation to thrust force, advance rate and vibration according to the rock mass characteristics.2 Dependency of the advance rate on the structure of the rock mass

Brenner Base Tunnel – a 10.5 km double shield TBM drive in granite / Brenner Basistunnel – 10,5 km Doppelschild‐TBM im Granit

“…in [7], [8], [9], [10], [11], [12]. Comparisons with the RMR, rock mass fracturing parameters and strengths of rock and rock mass have also been dealt with [13], [14], [15], [16], [17], [18], [19], [20], [21] etc. In this article, experience with granite is reported, which could contribute to an improvement of predictions of penetration in igneous rocks.…”

“…B. in [7], [8], [9], [10], [11], [12]. Ebenso wurden Vergleiche mit dem RMR, Parameter der Gebirgszerlegung und Festigkeiten von Gestein und Gebirge behandelt [13], [14], [15], [16], [17], [18], [19], [20], [21] etc. In diesem Beitrag sollen Erfahrungen mit Granit aufgezeigt werden, die zur Verbesserung von Prognosen der Penetration in plutonischen Gesteinen beitragen können.…”