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List of products by author: D. Sebastiani
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Effectiveness of Foam Injection during Mechanized Excavation of Tunnels with TBM-EPB Technology
Abstract: In the mechanized excavation of tunnels with Tunnel Boring Machines, an ever more frequently used technique worldwide is the Earth Pressure Balance (EPB) technology; during the excavation phases this technology requires continuous injection of chemicals under the form of foam to be mixed with the excavated soil. Since the features of the foam influence significantly the excavation performances...
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Effectiveness of Foam Injection during Mechanized Excavation of Tunnels with TBM-EPB Technology
Abstract: In the mechanized excavation of tunnels with Tunnel Boring Machines, an ever more frequently used technique worldwide is the Earth Pressure Balance (EPB) technology; during the excavation phases this technology requires continuous injection of chemicals under the form of foam to be mixed with the excavated soil.Since the features of the foam influence significantly the excavation performances...
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Soil conditioning process of Pliocene formation for Rome Metro C EPB -TBM
Abstract: The overall project of the Rome Metro C line includes the realization of more than 50 km of tunnels and 30 underground stations. The T3 stretch, in particular, involves the realization of underground operations under the Rome city centre, one of the richest areas of historical and archaeological buildings included in the UNESCO World Heritage. In the central part of section T3 the excavation...
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Study on short and long term effects of chemicals on fine grained soils for mechanized tunnelling conditioning
Abstract: This study presents the preliminary results of research activity focused on the physical and mechanical properties of soil treated with the injection of chemicals, commonly used in tunnelling performed with tunnel boring machines (TBMs) and EPB technology. For fine grained soils, the focus is to enhance the excavation process, optimizing consistency as well as reducing adhesiveness and...
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Study on the environmental impact of chemicals used in mechanized tunneling techniques
Abstract: This paper focuses on the environmental impact of soil conditioning agents used in the mechanized excavation of tunnels. The effects of the chemical composition, dosage and injection mode of the different additives, as well as the effects of soil characteristics and the influence of the aerobic and anoxic environment on chemical biodegradation, through tailored laboratory tests were...
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