12 of the Polavaram spillway radial gates fully operational

PHOTOS by Ch Vijaya Bhaskar, former Chief Photographer of The Hindu, Vijayawada

G Venkataramana Rao

Amaravati, April 17:

Twelve of the 48 radial gates of the Polavaram Project spillway are fully functional.Work to fix the gates, concrete and earth excavation work in the spill channel and approach channel associated with the spillway are in full swing.

The contractors, the Megha Engineering and Infrastructures Limited (MEIL) have done 2,75,111 cubic metres of concrete work on the Spillway and completed 1,128 metres of the spillway bridge.

MEIL engineers have already erected 40 of the 48 radial gates and fixed 76 of the 96 hydraulic cylinders of the gate hoisting mechanism. 

The engineers have also put in place six out of the 24 power packs needed for hoisting the gate. Each power pack operates two radial gates and therefore 12 of the spillway gates are ready for operation, the Irrigation Authorities said.

All ten of the sluice gates and the fish ladder have been completed. 

Spill and approach channels

The concrete and excavation in the Spill Channel and Approach Channel are going on at a good pace. MEIL after taking over has completed 1,99,000 cubic metres of concrete work and 24,35,361 cubic metres of earth excavation work on the Spill Channel. It also removed 4,37,575 cubic metres of rock and earth from the hill (no.901) in the spill channel. 

As much as 15,16,878 cubic metres of concrete work has been completed in the Approach Channel by MEIL. A hundred excavators and 300 tippers are working round the clock to maintain the excavation schedule. 

There is considerable progress even in the construction of the cofferdams. The contractors have deposited 3,72,296 cubic metres of rock filling in the upper cofferdam.

Excavation is also going on briskly at the site of the power house. As much as 14,16,558 cubic metres of earth has been excavated till now, the Irrigation authorities said.

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