Begin typing your search above and press return to search.

Reduce dam height to prevent disaster: Expert

By Subansiri project

RAJAHMUNDRY (AP), Nov 1 � A noted enviromentalist and expert from Andhra Pradesh has demanded redesign and reduction in height of the 115-metre Subansiri dam in Assam to minimise its adverse environmental impacts.

�This 115-metre-high concrete dam over Subansiri river, a tributary of Brahmaputra, is highly under-designed as the spillway is designed for peak flood of 12,000 cumecs even though the historical maximum flood of 21200 cumecs occurred in July 1971,� Professor T Shivaji Rao, Director, Centre for Environment Studies, GITAM University and Expert, Cloudseeding project in Andhra Pradesh, said in a release here.

Also, the 2000-MW hydel project is fraught with danger because of its location in a highly seismic zone, he said.

As per international standards, the spillway design flood must be at least 2-3 times this historical flood amounting to at least 50,000 cumecs. Even then the dam remains under- designed from the structural safety angle because the seismic coefficient used for the design of the dam is 0.4 as against the anticipated peak value of 1.0, Rao said.

Next Story
Similar Posts
Reduce dam height to prevent disaster: Expert

RAJAHMUNDRY (AP), Nov 1 � A noted enviromentalist and expert from Andhra Pradesh has demanded redesign and reduction in height of the 115-metre Subansiri dam in Assam to minimise its adverse environmental impacts.

�This 115-metre-high concrete dam over Subansiri river, a tributary of Brahmaputra, is highly under-designed as the spillway is designed for peak flood of 12,000 cumecs even though the historical maximum flood of 21200 cumecs occurred in July 1971,� Professor T Shivaji Rao, Director, Centre for Environment Studies, GITAM University and Expert, Cloudseeding project in Andhra Pradesh, said in a release here.

Also, the 2000-MW hydel project is fraught with danger because of its location in a highly seismic zone, he said.

As per international standards, the spillway design flood must be at least 2-3 times this historical flood amounting to at least 50,000 cumecs. Even then the dam remains under- designed from the structural safety angle because the seismic coefficient used for the design of the dam is 0.4 as against the anticipated peak value of 1.0, Rao said.