The High Speed/High Capacity (HS/HC) railway line between Naples and Bari is currently under construction in Southern Italy. The Napoli-Cancello stretch, at the beginning of the line, includes the Casalnuovo artificial tunnel, excavated through coarse-grained uncemented pyroclastic soil, mostly under the ground water level. The excavation will be carried out using a top-down approach, with the aid of compressed air to counterbalance the pore water pressure. This technique was chosen as an alternative to dewatering or execution of jet-grouting columns due to its reliability, flexibility and negligible impact on the pre-existing pore pressure regime. The design of the Casalnuovo tunnel excavation using compressed air is presented in this paper.

Excavation of an artificial tunnel using compressed air / Losacco, N.; Cafaro, M.; Marazzita, R.. - STAMPA. - (2021), pp. 325-329. (Intervento presentato al convegno 10th International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, IS-CAMBRIDGE 2022 tenutosi a Cambridge, UK nel June 27-29, 2022) [10.1201/9780429321559-41].

Excavation of an artificial tunnel using compressed air

Losacco N.;
2021-01-01

Abstract

The High Speed/High Capacity (HS/HC) railway line between Naples and Bari is currently under construction in Southern Italy. The Napoli-Cancello stretch, at the beginning of the line, includes the Casalnuovo artificial tunnel, excavated through coarse-grained uncemented pyroclastic soil, mostly under the ground water level. The excavation will be carried out using a top-down approach, with the aid of compressed air to counterbalance the pore water pressure. This technique was chosen as an alternative to dewatering or execution of jet-grouting columns due to its reliability, flexibility and negligible impact on the pre-existing pore pressure regime. The design of the Casalnuovo tunnel excavation using compressed air is presented in this paper.
2021
10th International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, IS-CAMBRIDGE 2022
9780367337339
Excavation of an artificial tunnel using compressed air / Losacco, N.; Cafaro, M.; Marazzita, R.. - STAMPA. - (2021), pp. 325-329. (Intervento presentato al convegno 10th International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, IS-CAMBRIDGE 2022 tenutosi a Cambridge, UK nel June 27-29, 2022) [10.1201/9780429321559-41].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/234703
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