Date, time & venue 
2012-03-31;8:30 am to 12:30 pm;Assembly place to be confirmed

Programme Highlights

Tai Tam Scheme was started early in 1872 and completed in 1889 and started to supply water in 1917. Tai Tam Reservoir is a group of reservoirs located in the Tai Tam Country Park. The reservoirs consist of Tai Tam Upper Reservoir, Tai Tam Byewash Reservoir, Tai Tam Intermediate Reservoir and Tai Tam Tuk Reservoir.

The visit enlightens our young engineers on the construction of Tai Tam Reservoir with briefing the planning, design, construction and maintenance for reservoir safety.

Fee:

Free of charge

Registration & Enquiries

Seats are limited to 25. 

As of 3 March 2012 6:00pm, too many registrations have been received. The registration procedures are closed. 

For enquiries, please contact Ir. C.S. Lam at 91527659.

The successful registrants will be confirmed on or before 20 March 2012.

Report
 

By Ir Carmen Kong

A technical visit to Tai Tam Reservoir was held on 31 March 2012. Ir Brian To of the Water Supplies Department led the participants to a site tour and introduced the history, construction and maintenance of the Reservoir.

Tai Tam Reservoir comprises Tai Tam Upper Reservoir, Tai Tam Byewash Reservoir, Tai Tam Intermediate Reservoir, Tai Tam Tuk Reservoir built between 1883 and 1917.  The historic waterworks facilities in Tai Tam Reservoir have been declared as monuments under the Antiquities and Monuments Ordinance (Cap. 53).  The Reservoir has been providing fresh water supply to residents of Hong Kong Island and witnessed the development of Hong Kong throughout the 20th century.   

Tai Tam Upper Reservoir is the oldest reservoir in the group of Tai Tam Reservoir.  It is a masonry faced concrete gravity dam with a height of 40m above the river bed at the downstream toe.  The dam is straight on plan and has a crest length of 151m.  The dam foundation is situated on medium grained granite at the left abutment, and fine to medium grained granite at the bottom of the valley and at the right abutment.

Ir To briefed the participants that to ensure reservoir safety, monitoring, inspection, maintenance and repair works were required.  For monitoring purpose, survey points, V-notches, standpipe piezometers, tell-tales have been installed to check the dam movements, seepage flow, water pressure and cracks found on the dam. 

Over the past years, there have been modifications and remedial works for Tai Tam Upper Reservoir.  Form example, in 1991 to 1993, borehole investigation and grouting of the foundation and the dam body was carried out.  Separately, in 2004 to 2005, grouting of the foundation at the right abutment was conducted in view of leakage problem of Tai Tam Upper Reservoir.

During the technical visit, the participants visited various waterworks facilities in Tai Tam Reservoir.  There were also discussion on the construction and maintenance of the safety of the dam.  It was particularly interesting to learn about how the Reservoir was built over 100 years ago and to appreciate how it continued to serve the people of Hong Kong today. 

Finally, on behalf of the HKIE and the participants, we would like to express our sincere thanks to Ir To and colleagues of the Water Supplies Department for arranging the technical visit.

Photos of the Event

Please visit Photo Album 20120331 Tai Tam Reservoir