The Hong Kong-Zhuhai-Macao Bridge was officially opened to traffic on Oct. 24th.
The bridge was crossed the China White Dolphin National Nature Reserve in the
Pearl River Estuary in Guangdong. The surrounding marine environment is extremely
sensitive, and the impact of the project on the environment has received much
attention. When the Hong Kong-Zhuhai-Macao Bridge Administration introduced
the situation, it always emphasized the concept of “environmental protection first”,
which will run the whole process of the bridge construction and promote ecological
restoration during the operation period.
Yu Lie, deputy director of the Hong Kong-Zhuhai-Macao Bridge Administration, said
in an interview with reporters that the bridge project was adhered to the concept
of “environmental protection first” and took “source control” as the starting point.
The environmental impact assessment and sea area use, Chinese white dolphins’
protection, flood control evaluation and other environmental protection research
have been carried out in the feasibility study stage of the project.
The engineering team also innovated the construction process and incorporated
environmental elements into the construction. Yu Lie pointed out that the
engineering team adopted the design concept of “large-scale, standardization,
factorization and assembly” to realize the prefabrication, it will realize offshore
assembly and assembly installation of immersed tunnels, bridge caps, piers and
steel box girder shores, improve work efficiency and shorten construction time
at sea.
At the same time, by increasing the non-navigable bridge span and the optimal
design of the buried cap, the occupied sea area is reduced, the water blocking
rate is reduced, the construction noise is reduced, and the impact of offshore
construction on the marine environment and the Chinese white dolphins is reduced.
According to reports, the bridge management bureau will try to avoid large-scale
dredging, excavation and other operations that are prone to large quantities
of suspended solids during the peak season of Chinese white dolphins from April
to August, and use large equipment to reduce the number of construction
equipment, avoid concentrated and high-strength construction with relatively
balanced work arrangements, and reduce adverse impacts on the construction
area and surrounding organisms. Zhejiang Jianzhong Maritime Equipment Co., Ltd
was participated in the dredging work. They products silt curtains were used for
controlling the suspended solid.
For the main environmental protection work plan during the operation period,
the Hong Kong-Zhuhai-Macao Bridge Administration provided information from
the reporters that the management personnel will cover the entire bridge
by video surveillance, 24-hour continuous environmental monitoring in the
tunnel, and specially established Chinese White Dolphin Observatory and the
tide check station on two artificial islands. They will continuously monitor the
water, gas, and acoustic environment and Chinese white dolphins in the main
project of the bridge and nearby areas.
The Hong Kong-Zhuhai-Macao Bridge Administration said that it will also plan to
gradually carry out ecological restoration work during the operation period; they
will improve the ecological environment of artificial islands and provide habitats
for seabirds; and jointly carry out research projects to improve the Pearl River
Estuary ecosystem and protect Chinese white dolphins with scientific research
institutions.