Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Different from ground engineering, tunnel is highly influenced by surrounding rock. However, surrounding rock has never been mentioned in previous published studies on carbon emissions in tunnels. In order to evaluate the effect of surrounding rock conditions on carbon emissions, this study expounded the relationship between tunnel designs and rock mass classifications. Besides, five different surrounding rock conditions and tunnel lining designs of a real tunnel in China were introduced in detail. LCA was used to analyze the carbon emissions in five tunnels with different surrounding rock. The tunnels with worse rock conditions generate more carbon emissions in construction, while the emissions are between 6,220 t–17,010 t CO2 eq. More than 60% of the carbon emissions are from materials. The importance of surrounding rock conditions to carbon emissions in tunnels was clarified in this study. Emissions increased sharply in many cases after comparing the same construction for different surrounding rock conditions. Based on the defined relative contribution indexes, transition paths of carbon emission were ascertained.
Different from ground engineering, tunnel is highly influenced by surrounding rock. However, surrounding rock has never been mentioned in previous published studies on carbon emissions in tunnels. In order to evaluate the effect of surrounding rock conditions on carbon emissions, this study expounded the relationship between tunnel designs and rock mass classifications. Besides, five different surrounding rock conditions and tunnel lining designs of a real tunnel in China were introduced in detail. LCA was used to analyze the carbon emissions in five tunnels with different surrounding rock. The tunnels with worse rock conditions generate more carbon emissions in construction, while the emissions are between 6,220 t–17,010 t CO2 eq. More than 60% of the carbon emissions are from materials. The importance of surrounding rock conditions to carbon emissions in tunnels was clarified in this study. Emissions increased sharply in many cases after comparing the same construction for different surrounding rock conditions. Based on the defined relative contribution indexes, transition paths of carbon emission were ascertained.
Carbon Emission Transition of Highway Tunnel Construction
Guo, Chun (Autor:in)
Carbon Emission Calculation Methods for Highway Tunnel Construction ; Kapitel: 6 ; 165-184
02.09.2021
20 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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