Sustainable Design Approaches for Large Span Rock Caverns in Hong Kong
DOI:
https://doi.org/10.21467/proceedings.8.2.16Abstract
It is essential to create new land for the sustainable development of Hong Kong, and cavern development is one of the viable options to provide valuable land for multiple functions such as accommodation of various facilities, provision for service reservoirs, etc. To ensure the constructability of such large caverns, the location of these caverns would be carefully chosen based on their geological compatibility; however, obstacles remain in their design and construction processes. This paper discusses the various design challenges to overcome unexpected issues encountered during the construction of Hong Kong’s largest rock cavern under the project ‘Joint Cavern Development at Anderson Road Quarry Site’, which four large caverns of up to 36m span were designed with multiple adits connected, forming a complex network of underground openings. Also, the design approach that is adopted to ensure a high level of confidence for construction while maintaining cost-effectiveness of the project.
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