Table 2.5              Summary of Project Elements

Works Programme

Mid 2006 to Mid 2009

Major Elements in Pak Ngan Heung River and Ling Tsui Tau U-Channel

(a) Open Trapezoidal Channel

Length = 80m

Depth = 2.5m – 3.5m

Bed width = 8m

 

Gabion walls with rip-rap bases and natural substrates.

(b) Rectangular Channel

Length = 100m

Depth = 3m – 3.5m

 

Rip-rap bedding and concrete vertical walls of rip-rap bedding

(c) Diversion Box Culvert

Length = 180m

3 cells 3m(W) x 2m(H)

(d) U-Channel (Ling Tsui Tau)

Length = 200m

750mm U-channel

 

 

 

 

Major Elements in Luk Tei Tong By-pass Channel

(a) Rectangular Shape

Length = 350m

Depth = 0.8m

Bed width = 14m – 18m

 

A minimum of 200mm high embankment will be constructed at most of the section of the channel to avoid surface runoff from existing marsh flowing to the proposed by-pass channel. In order to match with the downstream Luk Tei Tong river, the height of the embankment would be gradually increased to about 1500mm at only the non-sensitive areas.

(b) Reprovision of crossings

2 numbers (1 vehicular crossing and 1 pedestrian crossing)

 

 

 

 

Major Elements in Luk Tei Tong River

(a) Open Trapezoidal Channel

Length = 240m

Depth = 3m

Bed Width = 3m

 

Gabion walls with rip-rap bases and natural substrates.

 

Major Elements in Tai Tei Tong

(a) River Widening

3 bottlenecks only

 

 

 

Existing river bed will be untouched and the bank will be reinstated by gabion blocks.