Tehri Hydro Development Corporation Ltd.
Tehri dam is a 260.5m high earth & rockfill dam constructed across the mythical river Bhagirathi in the lower Himalayas region of India. Location of the dam falls in a region of high seismicity. In such region, site for the dam was selected in a narrow gorge on various considerations. In order to monitor the behaviour of the dam both during construction and operation period, and to verify the assumptions made during the design of its structure, an elaborate scheme instrumentation has been provided in the body of the dam & its foundation. Two inspection galleries have also been provided through the body of dam core to visually inspect the body of dam during the operation period of the project. In addition to the above, seismic instrumentation for studying the strong motion and micro seismic events of the Tehri region has also been provided.
This paper presents an overview of the instrumentation scheme for Tehri dam.
