Polavaram Dam

Polavaram Project is a multi-purpose irrigation project built on the Godavari River in West Godavari district and East Godavari district in Andhra Pradesh. This project has been designed to address the country's water scarcity. Dam construction involves the construction of a 1.5 m thick concrete diaphragm wall to a depth of 40 to 120 m below the river bed under an earthen dam, which is the first of its kind in India.

The project is an earth-cum-rock fill capable of discharging 3,600,000 cu ft/s (100,000 m/s) with 44 vents with a spillway of 2,310 m (7,580 ft) in length, 907 m (2,976 ft). Build a dam. Water. The project reservoir has live storage of 75.2 tmcft at the full supply level of canal 41.15 m (135 ft) MSL and gross storage of 194 tmcft to enable irrigation of 23,20,000 acres (including stabilization of existing irrigated land) in Krishna, West Godavari, East can be done. Godavari, Visakhapatnam, Vizianagaram, and Srikakulam districts of Andhra Pradesh.

Project Details Polavaram Dam Location Polavaram, West Godavari district, Andhra Pradesh Client AP Irrigation / CWPRS Contractor Navyuga Engineering Limited Year 2016-Under construction

Encardio-rite was awarded the sub-contract for supply and the installation of safety monitoring instrumentation for the project. The instrumentation included:

Spillway

Piezometers Uplift pressure meters Total pressure cells Strain meters – rosette with no stress-strain meter Joint meters Automatic water level monitoring system Borehole extensometers – multi-point Temperature meters Seepage measurement systems Plumb line – normal and inverted Topographical markers Portable readout units Automatic data acquisition system Automatic weather station Strong motion accelerometer (3 no triaxial sensors)

Earth dam

Piezometers - foundation and embankment Total pressure cells Automatic water level monitoring system Inclinometer cum magnetic extensometer. Magnetic extensometer – vertical movement Magnetic extensometer – horizontal movement Seepage measurement systems Surface settlement points- parapet wall and embankment Portable readout units Dataloggers