Analysis of controlled deformation in rocks and soils information
Drilling of the tunnel face anchors, Val di Sambro Tunnel, Italy
The Analysis of Controlled Deformation in Rocks and Soils, translated from Italian Analisi delle Deformazioni Controllate nelle Rocce e nei Suoli (ADECO-RS), also known as The New Italian Tunneling Method (NITM),[1] is a modern tunnel design and construction approach. ADECO-RS was proposed by Pietro Lunardi in the 1980s on the basis of long in-depth research into the stress-strain behavior of more than 1,000 km of tunnel and more than 9,000 faces.[2] In the past few decades, ADECO-RS has been widely used in Italian railway, highway and large underground construction projects and has been incorporated into Italian tunnel design and construction specifications.
ADECO- RS is a systematic and full-face mechanized excavation tunneling technology that can be used under various surrounding rock conditions, especially in shallow buried soft formation. Paying attention to the role of advance core is the core philosophy of ADECO-RS.[3] The strength, stability, and sensibility to the deformation of the core medium before tunnel face (same concept as advance core) are playing a vital role during construction of the tunnel. There is a distinct boundary between the design stage and construction stage in the procedure of ADECO-RS, making the possibility of forecasting of the budget and duration of the construction accurate.
ADECO-RS believes the problem of the excavation of tunnels as a three dimensional problem, with attention focused on the three types of deformation: tunnel face (extrusion, pre-convergence) and cavity (convergence).[4]
^Frederic, Pellet (2007). Time dependent behavior of rock and practical implications to tunnel design.
^Lunardi, Pietro. (2008). Design and construction of tunnels : analysis of controlled deformation in rocks and soils (ADECO-RS). Berlin: Springer. ISBN 9783540738756. OCLC 233973362.
^Sui dao gong cheng. Zhu yong quan, (1960.3- ), Song yu xiang., 朱永全, (1960.3- ), 宋玉香. (2ban ed.). Bei jing: Zhong guo tie dao chu ban she. 2007. ISBN 9787113082260. OCLC 289038431.{{cite book}}: CS1 maint: others (link)
^Lunardi, Pietro (2014). The underground as a resource and reserve for new spaces: ADECO-RS as an effective tool to be able to realize them. Proceedings of the World Tunnel Congress 2014.
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