Monitoring Dams in India

23 Dec

In providing instrumentation and expertise in designing seismic sensors, Gaiacode is part of the biggest rehabilitation project of dams in the world. Under the acronym DRIP (Dam Rehabilitation and Improvement Project), the government of India is spending the equivalent of more than US$500 million to rehabilitate and improve about 250 of the approximately 5300 dams in the country. The goal of this ambitious project is to ensure the long term stability and functionality of these vital components of water security on the subcontinent (see http://damsafety.in).

Teaming up with Encardio-Rite


To participate in this project, Gaiacode teamed up with its Indian partner Encardio-rite, a global leader in real time safety monitoring solutions for risk assessment of mega construction projects and existing infrastructure. Together they delivered and installed a total of 36 three component forced-feedback digital accelerometers (Sigma) in several dams in the southern India.

Eleven Dams Instrumented

Sigma on top of Neyyar Dam
Each of the dams is equipped with three accelerometers (photo above), one on the on crown of the dam, one inside the gallery and one as a free-field installation at least 50 meters away from the dam structure. Besides the digital sensors the installation includes sheet metal housings, power supplies with battery backup as well as a data communication unit based on 4G VPN modems. The approximate locations of the dams equipped with similar Gaiacode/Encardio-rite instrumentation are shown in accompanying Google Earth Map.

 

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References

  • Ref 1 USHER, M.J., BURCH, R.F. and GURALP, C.M., “Wide-band Feedback Seismometers”, 1979. Physics of the Earth and Planetary Interiors, 18: 38-50.
  • Ref 2 M,J, USHER and C.M. Guralp, “The design of miniature wideband seismometer” Geophys. J.R. ast. Soc. (1978)-55 (605-613) ,
  • Ref 3 GURALP, C.M., “The Design of a Three-component Borehole Seismometer”, 1980. Ph.D. Thesis, Univ of Reading.
  • Ref 4 GURALP C.M. Patent Application, No: 7909579 Filed: 19th March 1979 (declaration priority from Appln No: 10279/78 Filed: 15th March 1978) “Vertical Seismometer”.
  • Ref 5 GURALP C.M. United States Patent Application Number: 4,280.206 March 1979. SEISMOMETERS.
  • Ref 6 GURALP C.M. UK Patent Application GB 2-144-287-A. July 1983 Analog-to-digital converters for Seismometers. The National Research Development Corporation (UK)
  • Ref 7 GURALP C.M. UK Patent Application No. 1900719.4; Title: Infrasound Detector [M&S-IRN.FID4315516]