Exploration on Construction of Geothermalutilized Shield Tunnels：a Case Study of Fabrication and Installation of Tunnel Energy Segments in Qinghuayuan Tunnel

doi:10.3973/j.issn.2096-4498.2019.04.019

Tunnel Construction ›› 2019, Vol. 39 ›› Issue (4): 677-683.DOI: 10.3973/j.issn.2096-4498.2019.04.019

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Exploration on Construction of Geothermalutilized Shield Tunnels：a Case Study of Fabrication and Installation of Tunnel Energy Segments in Qinghuayuan Tunnel

ZHU Zhennan¹， GUO Hongxian^{1, 2}

Exploration on Construction of Geothermalutilized Shield Tunnels：a Case Study of Fabrication and Installation of Tunnel Energy Segments in Qinghuayuan Tunnel

Received:2019-01-02 Revised:2019-03-29 Online:2019-04-20 Published:2019-05-01

Abstract

Abstract:

Tunnel structures in civil engineering used as heat exchange components for shallow geothermal are named "energy tunnel". In shield tunnels, heat exchange tubes are installed in the prefabricated segments to form "tunnel energy segment" (TES), TESs are connected to form a circuit in site. This type of tunnel is called "energy shield tunnel". Based on two examples of energy shield tunnels abroad, construction methods of geothermalutilized shield tunnels such as the prefabrication of energy segments and the onsite installation of segments have been summarized combined with the design, fabrication and installation of 27 TES of Qinghuayuan Tunnel in BeijingZhangjiakou Railway. According to the specific problems encountered in the construction, possible solutions are given for the problems faced by largescale construction of TESs from the perspectives of tube production and onsite construction.

Key words: shield tunnel, energy segment, geothermal utilization, segment fabrication, segment installation, Qinghuayuan Tunnel

CLC Number:

U 455

ZHU Zhennan， GUO Hongxian. Exploration on Construction of Geothermalutilized Shield Tunnels：a Case Study of Fabrication and Installation of Tunnel Energy Segments in Qinghuayuan Tunnel[J]. Tunnel Construction, 2019, 39(4): 677-683.

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Exploration on Construction of Geothermalutilized Shield Tunnels：a Case Study of Fabrication and Installation of Tunnel Energy Segments in Qinghuayuan Tunnel

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