Using Global Navigation Satellite System (GNSS) Technology to Monitor Settlement at the District Cooling System Pipes in Kai Tak District

I&T Wish Using Global Navigation Satellite System (GNSS) Technology to Monitor Settlement at the District Cooling System Pipes in Kai Tak District
(REF: W-0460)
Matched I&T Solution
Trial Project
Summary and Challenges
  • During the typhoons in late 2021, public attention and concern were brought to the settlement incidents at New Acute Hospital Site in Kai Tak. Internal study reviewed that there is potential for settlement of the District Cooling System pipes in the district in future considering both the New Road T2 and the NAH's works would continue beyond the completion of the DCS works contract.
  • To address the settlement in the long terms, practical means is required to continuously monitor potential settlement of the DCS pipes that may be caused by the NAH contract, New Road T2 contracts and other future construction contracts in this area. The traditional method of settlement monitoring is to fix an adequate numbers of settlement marks distributed properly over the ground or structure or fixture and then observe the locations of these marks over a period of time manually. The traditional manual method is time consuming and extensive resources are involved.
  • It is required to explore the technology offering real time operation, providing detection on sudden movement/ changes with quick alert mechanism to engineers for timely follow up.
Expected Outcome
  • As the DCS pipework distribution in Kai Tak is rather extensive, the traditional method is infeasible. By adopting Global Navigation Satellite System technology, it is possible to monitor an object's movement or the settlement of the District Cooling System pipes in the affected areas of site directly.
  • A series of GNSS DCS settlement check points, together with the antenna and receiver and other supportive accessories shall be set up at the concerned areas of the site to reliably and continuously monitor the levels of settlement of pipes. Through the GNSS cloud server, reporting of the GNSS settlement measurement could be generated for regular and timely follow up on the potentially affected pipework.
  • The technology also shall provide merits of low maintenance and long service life and at the same time provide consistent and accurate monitoring data results on 7/24 basis.
Expected Trial Duration 12-month
Contact Information
I&T Wish Proposer:Electrical and Mechanical Services Department (EMSD)
Contact Person:Ngai Kwok Leung
Position:Senior Engineer/Energy Efficiency C8
Tel:3757 6133
Email: klngai@emsd.gov.hk
Upload Date 2023-06-09
Closing Date 2023-07-07
Propose I&T Solution Closed