Skip to main content

Investigation and Design for Harbor Area Treatment Scheme Stage 2A - Sewage Conveyance System, Hong Kong Special Administrative Region

The full text article is not available for purchase.

The publisher only permits individual articles to be downloaded by subscribers.

or click here to sign up for a free trial

Abstract:

Harbor Area Treatment Scheme is one of the most important sewerage projects undertaken by the Government of the Hong Kong Special Administrative Region to clean up the Victoria Harbour. This paper will describe the sewage conveyance system of Stage 2A of the Scheme. The Stage 2A system consists of 21 km of tunnels at a maximum depth of 160m below sea level. The sewage tunnels will collect sewage from preliminary treatment works located in various districts on the northern and western sides of Hong Kong Island, and convey the collected sewage to the Stonecutters Island Sewage Treatment Work for treatment and disposal. Sewage flows via the deep tunnels under an inverted siphon system. The Stage 2A sewage conveyance system will go through some of the most densely populated and busiest trafficked areas on Hong Kong Island, as well as through difficult geological features.

This paper will present the considerations in the hydraulic design of the conveyance system, methods of ground investigation along the proposed tunnel alignments together with the selection of construction method to deal with the anticipated geological conditions. One of the major challenges of the project is to control ground water drawdown during tunnel construction. The paper will describe the design and monitoring approach to address the issue of ground water control. Another major consideration is the maintenance aspect. This paper will discuss some of the design considerations to ensure that the efficiency of the sewage tunnels can be monitored continuously during operation.

Keywords: Harbor area treatment; hydrogeological assessment; sewage conveyance system; sewer hydraulics; sewer tunnel

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864709793847032

Publication date: January 1, 2009

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Ingenta Connect is not responsible for the content or availability of external websites
wef/wefproc/2009/00002009/00000002/art00056
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more