Numerical investigations of the tunnel environment effect on the performance of energy tunnels

Ma, Chunjing; Donna, Alice Di; Dias, Daniel; Zhang, Jiamin

doi:10.1016/j.renene.2021.03.104

Cited by 30 publications

(2 citation statements)

References 33 publications

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“…Finally, one of the peculiarities of energy tunnels that can significantly affect their performance is the air temperature inside the tunnel, as shown in several studies (Bourne-Webb et al 2016;Insana and Barla 2020;Ma et al, 2021). A wide range of chemicals are used for tunnel excavation, both in the case of mechanized excavation with full section cutters (TBM) and in the case of excavation with traditional methods.…”

Section: Thermo-hydraulic Numerical Modelingmentioning

confidence: 99%

Guidelines for sustainable management of groundwater inflows and geothermal heat in tunnels

group¹

2022

AS-ITJGW

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The Guidelines for sustainable management of groundwater inflows and geothermal heat in tunnels were developed by members of the Italian Committee of the International Association of Hydrogeologists (IAH) GESTAG working group. The GESTAG working group was set up by the Italian chapter of the IAH (https://www.iahitaly.it). This guideline was approved by the Board of the Italian Chapter of the IAH on 20/09/2022. IAH Italian Committee: Sergio Rusi (President), Stefania Da Pelo (Secretary), Manuela Lasagna, Vincenzo Piscopo, Luca Alberti, Giovanna De Filippis, Diego Di Curzio, Giovanni Forte, Marco Petitta, Elisabetta Preziosi, Marco Rotiroti, Glenda Taddia, Alberto Tazioli, Riccardo Torri, Daniela Valigi, Valentina Vincenzi. Coordinator of the GESTAG working group: Antonio Dematteis. Contributing authors: Antonio Dematteis (Chap. 1), Riccardo Torri, (Chap. 2), Fabrizio Grosso and Paolo Perello (Chap. 3), Alessandro Gargini and Valentina Vincenzi (Chap. 4), Antonio Dematteis, (Chap. 5), Marco Barla, Alessandra Insana, Francesco Cecinato, Daniela Blessent, Daniele Pedretti, Paolo Cerutti (Chap. 6), Alessandro Boscaro (Chap. 7), Maria Elena Parisi (Chap. 8), Guido Ruffinatto, Sergio Vazzoler, Antonio Dematteis (Chap. 9), Maria Governa, Luca Ranfagni (Chap. 10) and Valentina Vincenzi (Chap. 11). Editors: Paolo Cerutti, Alessandro Gargini, and Antonio Dematteis.

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Section: Thermo-hydraulic Numerical Modelingmentioning

confidence: 99%

Guidelines for sustainable management of groundwater inflows and geothermal heat in tunnels

group¹

2022

AS-ITJGW

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“…At present, the construction of large-section special-shaped tunnels has become an important part of energy and transportation infrastructure construction. Special-shaped tunnels used as heat exchangers in the form of energy tunnels can sustainably meet the thermal energy needs of buildings across city districts [1][2][3]. Compared with circular tunnels, special-shaped tunnels can provide a larger available space and energy utilization rate for energy equipment.…”

Section: Introductionmentioning

confidence: 99%

A Study of the Segment Assembly Error and Quality Control Standard of Special-Shaped Shield Tunnels

Dai

et al. 2022

Energies

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Large-section special-shaped shield tunnels feature many advantages, such as versatility and a large space utilization rate in energy transmission and public transport; however, guaranteeing the quality of segments’ assembly is difficult. Based on the quasi-rectangular shield tunnel project of Hangzhou Line 9 in China, this study investigated the formation mechanism and control measures of lining segment assembly defects. By quantifying the manufacturing error and positioning error, a simulation program for segment assembly is developed to calculate the error. Furthermore, considering the relative accumulative error between the upper and lower T blocks, the finite element model of key blocks (T-LZ block) is established to perform mechanical analysis, based on which the relative error control standard of the key block under the corresponding working conditions is proposed. The results show that the assembly quality can be effectively improved by assembling the LZ block first and applying corresponding error control measures, and the displacement of the segment along the rZ direction should be carefully controlled during the construction. The error caused by normal assembly will not damage the LZ block, and the corresponding control standard under the action of multi-degree-of-freedom error (extreme case) is 9.8 mm. Using this method to predict the assembly quality of segments can provide a basis for actual construction control of segment assembly.

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Thermal Conductivity of Cement–Based Grouts for Energy Micropiles: Preliminary Experimental Investigation

Ciardi

Oliynyk

Madiai

et al. 2023

Springer Series in Geomechanics and Geoengineering

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Numerical investigations of the tunnel environment effect on the performance of energy tunnels

Cited by 30 publications

References 33 publications

Guidelines for sustainable management of groundwater inflows and geothermal heat in tunnels

Guidelines for sustainable management of groundwater inflows and geothermal heat in tunnels

A Study of the Segment Assembly Error and Quality Control Standard of Special-Shaped Shield Tunnels

Thermal Conductivity of Cement–Based Grouts for Energy Micropiles: Preliminary Experimental Investigation

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