title page


The Mullaperiyar dam was constructed and completed in 1895 across the river Periyar in the then Travancore State to meet the requirements of irrigation in Madras Presidency. The Periyar dam is the first composite gravity dam of its kind in the country and also perhaps one of the earliest projects of inter-basin water transfer. Due to occurrence of some recent earthquake in the area, concern about the safety of this 114 years old composite gravity dam was raised. As a result, the seismic safety analysis of Mullaperiyar dam foundation system was referred to the Department of Earthquake Engineering, lIT Roorkee by the Chief Engineer, I & A and ISW, Government of Kerala vide letter No. GO (RT) No. 1087/2007 /WRD dated August 08, 2008.

 The structural stability of Mullaperiyar dam has been carried out in two parts. Part-I deals with deals with the seismic hazard assessment whereas, Part-II deals with the seismic stability analysis. This study deals with Part-II i.e., the 2D Plain Stress Linear Dynamic Finite Element Model (FEM) Analyses of Main dam as well as Baby dam. In this connection various reports on the study on Mullaperiyar dam conducted by Government of Tamil Nadu, Central Water Commission (CWC) and Government of Kerala were provided.

 The useful suggestions provided by Er. M.K. Parameswaran Nair, Chairman, Mullaperiyar Special Cell, Dr. Arun Bapat, Chairman, Expert Committee, Er. P. Lathika, Chief Engineer, I&A and ISW, Er. N. Sasi, Chief Engineer, I&A& ISW, Er. M. Sasidharan, Chief Engineer (Rtd.), KSEB, and Er. James Wilson, Assistant Executive Engineer, KSEB are greatly acknowledged.

The investigations have been carried out by Dr. D. K. Paul Professor and Dr. Pankaj Agarwal, Associate Professor in the Department of Earthquake Engineering, IIT Roorkee. Mr. Brijesh Singh, M. Tech student and Mr. Rajib Sarkar, PhD. Scholar, Department of Earthquake Engineering provided help in conducting the finite element analysis of the Main dam as well as Baby dam in addition to preparation of the technical report.

Dated: October 8, 2009                                                                                                                                                              (Signed)

                                                                                                                                                                          &nbs p;             D.K. Paul, Professor

Executive Summary

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