TUNNELS IN CAUSEYWAY BAY TYPHOON SHELTER
The tunnel section in Causeway Bay Typhoon Shelter (CBTS) will start from the southern end of the immersed tube tunnel (IMT) running through the existing CBTS breakwater and the CBTS and then approach to the proposed South Ventilation Shaft, Plant Building and Emergency Access (SOV). Temporary reclamation will be required for the construction of the Cut-and-Cover tunnel inside the CBTS to connect with the IMT tunnel.
Owing to the significant interfacing of SCL tunnel with the Central-Wan Chai Bypass (CWB) project, which involves the construction of cut-and-cover tunnel from temporary reclamation inside the CBTS, the tunnel protection works for SCL is proposed to be undertaken by Highways Department together with the main CWB works to minimise the extent and duration of temporary reclamation. The potential environmental impacts associated with SCL Protection Works at CBTS has been assessed and presented in the standalone EIA, which was approved in February 2011 under the Environmental Impact Assessment Ordinance (EIAO).
Whereas the temporary reclamation will be removed by the Project after the tunnel section at CBTS is completed, no environmental impacts would be anticipated during the operation phase of the Project.