The foundation rocks of umlam dam in the north-eastern part of tndia have been affected by tJ.10 faults. eme located at the central. part and another at the upstream end of the dam, Innumerable fractures and joint cut through the entire foundation consisting of quartzite and phyllite. The central fault Which runs little askew to the dam, axis containing clay gouge and crushed rocks was treated by a concrete plug followed by grouting down to 10 m extended below the plug. The upstream, fault at the contact of the two rock formations was treated by high pressure grouting down to 45 m. The foundation was strengthened by consolidation grouting of average 10 m depth. The grouting pattern was evolved with strict conformity with the natur disposition and frequency of fractures
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Treatment of Faults and Fractures in the Foundation of Umiam Dam in India
Paper presented at the ISRM International Symposium, Rio de Janeiro, Brazil, September 1978.
Paper Number: ISRM-IS-1978-030
Published: September 27 1978
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Gangopadhvav, S. "Treatment of Faults and Fractures in the Foundation of Umiam Dam in India." Paper presented at the ISRM International Symposium, Rio de Janeiro, Brazil, September 1978.
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