Thrust and torque components on mixed-face EPB drives

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hdl:2117/106052
Document typeArticle
Defense date2016-08
Rights accessOpen Access
Abstract
In this communication we propose a method to estimate net thrust and torque applied at the excavation front by cutting tools from EPB machines when they are working in mixed faces constituted by soils and soft rock. The method is inspired by similar simplifications used for the analysis of TBM drives in rock. The proposal is validated using a database of EPB registers which were gathered from more than 35 km of tunnel drives excavated in soils, soft rock and heterogeneous media. The results allow us to assess the influence of the type of ground excavated and its geotechnical properties on the net thrust and torque applied.
CitationGonzález, C., Arroyo, M., Gens, A. Thrust and torque components on mixed-face EPB drives. "Tunnelling and underground space technology", Agost 2016, vol. 57, p. 47-54.
ISSN0886-7798
Publisher versionhttp://www.sciencedirect.com/science/article/pii/S0886779815301814
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