Carbon Emission Intensity Analysis of Railway Tunnel Drilling and Blasting Method and Shield Tunneling Method Construction
Using the full lifecycle theory,a carbon emission accounting model for the materialization and operation and maintenance stages of railway tunnel engineering is established.By collecting data and organizing inventory throughout the entire lifecycle of tunnels,carbon emission accounting can be achieved.A comparison was made between the carbon emission intensity of shield tunneling method and drilling and blasting method.The results showed that the carbon emission intensity of the life cycle of drilling and blasting method construction is 16785 tCO2e/km,and that of the shield tunneling method construction is 9184 tCO2e/km,which is only 54.7%of the drilling and blasting method construction.Further analysis shows that the amount of cement,steel and other materials used in shield tunneling construction,as well as the consumption of fossil energy,are much lower than those used in drilling and blasting construction.Direct carbon emissions and other indirect implicit carbon emissions are relatively low.This study has important reference value for reducing carbon emissions from railway tunnel engineering and promoting low-carbon development.
Railway tunnelCarbon emission intensityShield tunneling methodDrilling and blasting construction methodFull lifecycle
NETL
NSTL
万方数据
