Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
312166 | Tunnelling and Underground Space Technology | 2006 | 16 Pages |
Abstract
This paper is intended to describe an Italian case study of a microtunnelling project where the boring machine got stuck during jacking of a 760 mm pipe in a limestone formation. Reference is made to rock mass characterisation, including site investigations and laboratory tests. The machine’s performance is compared to prediction. To allow for a better understanding of the conditions which led to the unexpectedly high jacking forces, continuum and discontinuum numerical analyses have been used. These analyses are shown to be essential at the design stage, when dealing with microtunnelling in a rock mass, in order to obtain a good prediction of the jacking forces.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geotechnical Engineering and Engineering Geology
Authors
Marco Barla, Marco Camusso, Santina Aiassa,