About
Visit Fee
Free
Highlights
The Relocation of Sha Tin Sewage Treatment Works to Caverns project stands as the largest cavern initiative in Hong Kong. Launched by the Drainage Services Department in 2014, this groundbreaking undertaking aims to relocate the aging Sha Tin Sewage Treatment Works into underground caverns by 2031. Upon completion, an impressive 28 hectares of land will be reclaimed, paving the way for diverse and meaningful uses while addressing longstanding challenges related to landscape, odor, and outdated facilities at the current site.
This visit will take place at the Community Liaison Centre, offering participants valuable insights into the innovative solutions employed in relocating sewage treatment facilities into caverns. Attendees will have the chance to explore cutting-edge construction technologies and learn how this strategic relocation unlocks precious land in land-scarce Hong Kong. By transforming these spaces, the project creates new opportunities for sustainable development, setting a benchmark for future urban planning initiatives.
Registration
The number of participants is strictly limited. Priority will be given to members of the AGS (HK). The number of attendees will be limited to 25 and the applications will be accepted on a first-come, first-served basis.
Successful applicants will be informed about 1 week before the event. CPD certificates will be provided. If you have any queries, please call Martin Yip at 6012 0019.
Book Prize
Professionals under 35 years of age are encouraged to submit a Book Prize Report (max. 500 words) on webinars and site visits arranged by AGS (HK).
Contributors to successful Book Prize Reports will be awarded a Book Prize that comprises of a book "Geology of Site Investigation Boreholes in Hong Kong" written by Chris Fletcher, and a coupon of HK$500 for Eslite Spectrum (誠品生活). The successful Book Prize Report will also be published on the AGS (HK) website to showcase your accomplishment.
Prior to report submission, please refer to the “The AGS Book Prize Reports – Assessment Framework”* on the AGS (HK) website. You may submit your Book Prize Report to our assessors by uploading the report file through the AGS (HK) website at https://www.ags-hk.org/book-prize. Should you have any questions, please contact us at agshk@meinhardt.com.hk.
*Link to the AGS Book Prize Reports – Assessment Framework:
https://www.ags-hk.org/_files/ugd/521a4c_b94496034732484687441cf4ed4d0bf9.pdf
Keywords: Cavern
Recap of the day
On May 24, 2025, AGS organized a technical visit to the Sha Tin Sewage Cavern Project, supported by the Drainage Service Department (DSD) and AECOM. This project, the largest cavern initiative in Hong Kong, involves relocating the Sha Tin Sewage Treatment Works (STSTW) into caverns.
The scope of the project includes site preparation and access tunnel construction, main caverns construction and modification and construction of upstream sewerage and pumping stations, installation of sewage treatment facilities, and the decommissioning and demolition of existing STSTW.
During the visit, participants gained valuable insights into the ongoing site works for the cavern project. The hosts provided an overview of the project, highlighting the arrangement of the cavern and sewage treatment facilities, the geology of caverns, and the construction methods and strategic techniques employed for the cavern works. Additionally, innovative technologies adopted for the project were discussed as part of the orientation.
Following the presentation, participants had the opportunity to ask questions about the project methodology and took part in a 4D immersive virtual environment guided tour, which simulated the cavern site and showcased the ongoing works.
Overall, the site visit and discussion offered participants invaluable insights into the complex construction methods and innovative solutions utilized in relocating sewage treatment facilities into caverns. Thie experience will undoubtedly enhance engineers’ understanding of cavern construction techniques implemented in Hong Kong.
Watch again
Reference materials
Download the presentation slides and other reference materials below.
