Abstract
The technology characteristics of immersed tunnel and shield tunnel were analyzed.Based on the characteristics of Hongkong-Zhuhai-Macao Bridge,scheme design was performed for both immersed tunnel and shield tunnel and comparisons were made in terms of construction difficulty,risk assessment,geological applicability,construction period,engineering cost and environmental impact.The comparison shows that immersed tunnel scheme takes more advantage because it involves lower cost,lower risks and shorter construction period.The shortcoming of immersed tunnel is higher levels of interaction with external environment.However,with proper control measures,this effect can be minimized.As a result of the study,the immersed method was recommended for Hongkong-Zhuhai-Macao Bridge.
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