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Topic : WATER RETAINING STRUCTURES
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Mullaperiyar Dam issue. On what idea will you support.?

Created by : Muhammed jabir rifai, Graduate in Mechanical Engineering  | 10 26 2011 09:10:03 +0000
Keywords : mullaperiyar dam issue. on what idea will you support.?
Activity:  1430 views;  last activity : 12 14 2011 12:10:21 +0000

 

  
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Construct a new reservoir Vs Retaining the existing dam
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The dam’s reservoir level is the bone of contention between the Kerala and Tamil Nadu governments. Since 1970, Kerala has argued that the dam having outlived its life of 50 years is unsafe to maintain water at 46.3 metres—the full reservoir level—and it should be restricted to 41.45 metres. In 1979, the Central Water Commission (cwc)— the premier government agency dealing with dam safety—was asked to look into the matter; it suggested reduction of water level to 41.45 metres as an emergency measure along with other measures to strengthen the dam. Tamil Nadu agreed to this limit. Another committee headed by the then cwc chairperson B K Mittal was appointed in 2001 to look into the matter. It stated that the reservoir level be raised to 43.28 metres, after the strengthening measures were implemented. This was to be on an interim basis, and later reservoir levels could go up to the original level of 46.3 metres.

The government of Tamil Nadu has proposed an increase in the storage level of the dam from the currently maintained 136 feet to 142 feet. The Kerala government has opposed this move, citing safety concerns for the more than hundred year old bridge and especially for the thickly populated districts downstream.

Kerala claims that the agreement was forced on the then princely State of Travancore presently, part of Kerala, but the pact was validated yet again in 1970 by Kerala and Tamil Nadu.

Kerala and Tamil Nadu have been arguing about the Mullaperiyar dam built under a co-signed agreement in 1886 between the Maharaja of Travancore and the British authorities. The dam, which is located in the Idukki district of Kerala , serves the districts of Tamil Nadu which  in recent years, has  made demands  that the storage capacity of the dam be increased from 136 feet (41.5 m) to 142 feet (43 m) to meet the rising demand of water needed for irrigation. However, Kerala is asking for the construction of a new dam saying that the existing structure had outlived its safety and longevity. Tamil Nadu, insists that raising water levels in Mullaperiyar’s reservoir is necessary to irrigate large tracts in the state.

A structural stability study report of IIT, Roorkee on the 113-year-old Mullaperiyar Reservoir had found that the structure would not be safe in the event of an earthquake.

The report said the dam was likely to face damage if an earthquake of the magnitude of 6.5 on the Richter scale struck its vicinity when the water level is at 136 feet. It also noted that the dam would have undergone considerable deterioration in the intervening period, because of ageing and weathering.
By Muhammed jabir rifai, Graduate in Mechanical Engineering  12 06 2011 12:48:43 +0000
 
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Retain the dam for the timebeing...and reduce the water level to 120. That is the immediate thing to be done. If the Kerala Governments can keep their promise of building another dam in one year, then it is perfect. May be the dam can survive for another 5 or 10 years, even then we we should not take a chance putting the life of 25 - 40 lakh people in dilemma. All we have to take care is, it should not become a political issue. It is a social issue and have to be dealt that way only. Regards, Shruth & Smith Foundation (NGO), Banshankari, Bangalore. http://www.shruthandsmithfoundation.org/
By Shruth & Smith Group, Owner, Shruth & Smith Foundation  12 08 2011 05:03:44 +0000
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Latest update is that the water level should be retained to 136 or should be raised to 141. Tamilnadu Government is very stubborn dealing with this issue. If the people of Kerala stand together and face this issue, something positive may happen. Let's hope for the best. Regards, Anna George. Web Analyst. Nichepro Technologies Pvt Ltd, Bangalore. http://www.nichesuite.com
By Anna George, Web Analyst, NichePro Consulting LLC  | 12 14 2011 12:10:19 +0000
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It looks like nobody is clear about the actual problem with the dam.There are claims and counter claims. But nobody is coming out with the exact nature of the problem. The politicians are making it even more problematic. It is in the good of everybody to conduct review of the dam's exact problem by an independent and competent authority and if necessary construct a new dam any way it is a very old structure.
By Shashi Kumar U, Manager accounts & commercial, Mazda Concrete Products Pvt Ltd  | 12 14 2011 07:50:46 +0000
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Nobody can support the other side, because the existing dam outlived more than double of its life span. Its not wise to continue to store 15+ tmcs in such a dam. Tamilnadu's point of argument here is not tenable. At the same time Kerala acting generously on the issue. For any state, it is its duty to uphold the interests of its people. Tamilnadu should not prolong the issue any more. If something untoward happens who will be held responsible for that.
By Srinivas suravajhala, Asst. Manager.  | 11 30 2011 11:48:03 +0000
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The Kerala Government promised Tamil Nadu, that same quantity of water will be let down the new dam, the question is not giving /preventing water but the safety of the Dam itself and the people living down the streams in 3 districts inside Kerala. Not only that people of Tamil Nadu should consider the sentiments of the people of Kerala and apply co-existence on both the sides of the border. Let us not play politics at this hour and look the future...
By Vineeth D Menon, MBA/PGDM student, Wigan & Leigh College, India  | 11 28 2011 17:45:51 +0000
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The dam’s pathetic condition is a warning at any movement it will surely burst like a water bomb. I have seen the pathetic condition of the people, when river floods but this condition is even more dangerous than that. The site view strongly says we need the new one. One cannot be so negligent to kill the people, as well as wild animals.

Did any Responsible officer has completed his  inspection,The expert in dam construction can only able to give his expert input whether this can be restored by repairing or this needs a new construction. Today’s video clips are somewhat challenging. One can make anything using graphics.
By parimala.c.wagh , Tech Architect, Rites.Ltd/GC/BMRCL  | 11 28 2011 09:01:49 +0000
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Arguments by Tamil Nadu and Counter Arguments

1. ARGUMENT: 37 dams exits in India, which are more than 100 years old and still in service and hence it is not prudent to conclude that Mullaperiyar is unsafe based only citing the age of the structure.

 

COUNTER ARGUMENT: It is true that there are more than 37 dams exists in India which are more than 100 years old (Source: National Register of Large Dams, 2002). But a close look into the above data shows that out of the above 37 dams, 30 dams are of earthen dams having around 20 m height and more over having only an average gross storage capacity of less than 1 TMC! Hence these earthen dams are only can be qualified to be as ‘earthen bunds’ and does not pose much threat. 
If we consider the remaining seven masonry gravity dams, the Mullaperiyar dam surpasses all others with its height of 53.64m and its huge storage capacity of 15.66 TMC. The second one on the above list, Khadakwasla dam, which had already overtopped in 1961 due to the failure of the Panchet dam in the upstream (Maharastra - Pune District).  The third one on the list is having a height of only 16.77m. Hence such comparisons have no meaning.
Mullaperiyar dam is a composite gravity dam which lost of much of its strength due to continuous leaching of lime from its core. This dam is situated in an active fault zone, which makes the dam vulnerable to failure in an earthquake of moderate intensity with an epicenter close to the dam. Also the high hazard this dam poses a direct threat to the lives and property of 35 lakhs people living downstream and also a threat to the mega storage Idukki reservoir. Hence Mullaperiyar dam has no parallels and considering its age, deterioration and high hazard nature, must be decommissioned and a new dam must be built.
By Muhammed jabir rifai, Graduate in Mechanical Engineering  | 11 28 2011 08:01:25 +0000
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TN government banned DAM999 movie. Why do they afraid of the movie. TN CM Jayalalitha says the 105 year old DAM is still safe like a new one...!!! Then what the hell made them to Bann the movie. Whether the movie released or not, 3 Million lives are still @ stake.
By Muhammed jabir rifai, Graduate in Mechanical Engineering  | 11 24 2011 08:00:27 +0000
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The existing reservoir needs to be demolished after de-watering. The river can take its natural course & Tamil Nadu can have their due share of water.
By K.R. Manish, Mechanical Engineer [Mainetenance], NTPC  | 11 01 2011 16:12:29 +0000
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Jabir i agree with your practical view point.
By Rathin Deb, Freelance Retail Consultant  | 10 28 2011 05:58:45 +0000
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From being gods own country, Kerala is fast turning to be "fools own country"keralites seem to believe everything wch their POLITICOS say.Though the dam was not built using cutting edge technology, it was certainly built to last for a long long time to come..The intentions of the kerala govt is suspicious ! Why are they so hellbent on building a new dam destroying the existing one, the reasons that they QUOTE is laughable . They are simply misleading their people and whipping up passions ! The dam is strong, alive and kicking and the kerala politicos and their dumb people shld stop making noises and respect the Supreme Court " verdict on the same !
By Vijeesh G Krishnan, B.Tech/B.E. student, BHEL Matriculation Higher Secondary School  | 12 13 2011 14:20:49 +0000
Argue for "Construct a new reservoir"
Argue for "Retaining the existing dam"
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