Various applications of international RCC dam construction

By: Ted Warren USA

Al Wehdah RCC dam Jordan/Syria

• Medium paste RCC 60C/60A

103 Al Wehdah RCC dam nearing completion of RCC

• 6th fastest RCC dam constructed worldwide when completed

Conveyor layout Al Wehdah RCC Dam Jordan/Syria

Al Wehdah under construction 2005-2006

• Simple installation process• Less capital costs = Alliance asset and can be sold for

various uses in the mining and quarrying industry

Conveyor Configuration

C5C4

C3

C2

C1

Conveyor sections removed as the dam rises

C1

C2 Swinger

RCC delivery system• 350 m overland conveyor with integrated stepped sectional conveyor tranfers with swinger discharge conveyor for loading haul trucks on the fill

• Simple system used worldwide successfully for RCC dam construction

• This system was used on 8 of the top 10 fasted constructed RCC dams in the world (MDA database) with placement rates ranging from 52,000 m3 per month to 125,000 m3 per month

• Al Wehdah Dam was the 6th fastest RCC Dam constructed with an average monthly rate of 75,000 m3/ month of the 360 RCC dams completed world wide. (MDA database)

• Access walkways for safety, continuous maintenance ,and inspection purposes without an interruption to the RCC operation while in production

• Simply mechanical system = Less down time

• Wider conveyor = less speed = less segregation and less maintenance

• Less up front Capital = better value for money

Al Wehdah complete

155 m tal Ralco RCC dam Chile

All conveyor RCC delivery system

155 m Ralco Dam Chile

RCC placement 24 hrs5 th fastest RCC dam constructed worldwide when completed

• I.6 million m3 RCC

• Main conveyor with transfer to feed link conveyor combined with a tripper conveyor and Crawler Placer system on the fill

• Trucks were loaded on the fill directly from main conveyor when the complex system used for placement on the dam was being installed and during down time.

• This system is very effective for large and extremely complicated RCC dams generally over 1 million m3.

•

Ralco nearing completion

GERCC application

Mc Alpine RCC/CVC Navigation lock USA

Yeywa Hydropower project Myanmar/Burma

• 134 m tall• 2.34 million m3 RCC• 790 MW hydropower scheme• Non Gated OGEE spillway• Converging spillway chute with “ski jump”

and plunge pool discharge

Yeywa RCC Dam Myanmar ?Burma

Yeywa dam nearing completion

• Powerhouse under construction• Headrace penstocks for powerhouse

intake

Dong Nai 4 Vietnam

• 130 m tall• Hydropower project• 1.3 million m3 RCC

Dong Nai 4 RCC startup

Don Nai 3 Vietnam

• 103 m tall• 1.01 million m3 RCC

Prepared by: Ted Warren RCC consultant USA partial listing of RCC projects

• Contact information: damted2000@yahoo.com• Phone: USA + 001 210 845 7648• International consulting worldwide• 20 years RCC dam construction experience in 8

countries on 5 continents• International research and feasibility studies• Estimating services