ALAMATTI DAM BREAK ANALYSIS [CASE-1]
Prof.M.Ramesh and Prof.T.Shivaji Rao
Head of the Department of Civil Engineering and Director,centre for Environmental studies respectively
Gitam University ,Visakhapatnam-530045,INDIA
For morer details see WEB SITE ::http://tshivajirao.blogspot.com/2011/01/almathi-dam-hazardous.html
Head of the Department of Civil Engineering and Director,centre for Environmental studies respectively
Gitam University ,Visakhapatnam-530045,INDIA
For morer details see WEB SITE ::http://tshivajirao.blogspot.com/2011/01/almathi-dam-hazardous.html
Data used as input for US based NWS DAMBRK Model Analysis
FRL–519.6M .,
Storage- 130 TMC.,
Time of Breach- 2hrs
Roughness Coefficient- 0.05
Breach Width- 450m
Storage- 130 TMC.,
Time of Breach- 2hrs
Roughness Coefficient- 0.05
Breach Width- 450m
Height of Breach=Full Dam Height .,
IDF – 50,000 Cumecs
IDF – 50,000 Cumecs
--------------------------------------------------------------
Unprecedented rains in North Karnataka from 29th Sep 2009 onwards flooded several districts and cut off areas like Bijapur, Bagalkot and Bellary, some places receiving over 50 cms of rains in a single day. The floods inundated the Krishna and Tungabhadra rivers. Karnataka released 25 lakhs cusec of water from Almatti and Narayanpur dams in a single day, a record of sorts. http://indianairforce.nic.in/show_page.php?pg_id=115
OUTPUT DATA
Distance from Dam (km) | Max. Water Surface Elevation | Max. Flow (Cumecs) | Time to Max. Elevation (hr.) | Max. Velocity (m/s) |
.000 | 518.04 | 109063 | 3.100 | 4.49 |
10 | 512.45 | 103979 | 3.800 | 4.20 |
20 | 507.67 | 101283 | 4.300 | 3.99 |
30 | 502.93 | 98829 | 4.800 | 3.82 |
40 | 497.37 | 96616 | 5.300 | 3.70 |
50 | 491.95 | 95354 | 5.700 | 3.73 |
60 | 485.06 | 94770 | 6.000 | 4.19 |
70 | 470.89 | 94536 | 6.300 | 5.30 |
80 | 455.56 | 94351 | 6.700 | 5.53 |
90 | 440.40 | 94182 | 7.000 | 5.71 |
100 | 425.34 | 94018 | 7.300 | 5.88 |
110 | 410.35 | 93865 | 7.700 | 6.04 |
120 | 395.43 | 93717 | 8.000 | 6.21 |
130 | 380.67 | 93551 | 8.300 | 6.35 |
140 | 368.29 | 93068 | 8.900 | 5.21 |
150 | 361.67 | 92568 | 9.300 | 4.89 |
160 | 355.34 | 91975 | 9.700 | 4.60 |
170 | 349.52 | 91166 | 10.300 | 4.27 |
180 | 343.84 | 89894 | 10.900 | 3.99 |
190 | 339.49 | 88771 | 11.500 | 4.00 |
200 | 334.73 | 87208 | 12.400 | 3.96 |
210 | 331.45 | 85599 | 13.200 | 3.81 |
220 | 328.56 | 83423 | 14.000 | 3.47 |
230 | 326.86 | 81677 | 14.500 | 3.15 |
240 | 325.15 | 79905 | 15.100 | 3.12 |
245 | 324.29 | 79056 | 15.300 | 3.11 |
ALAMATTI DAM BREAK ANALYSIS (CASE-2)
Data used as input for US based NWS DAMBRK Model Analysis
FRL – 519.6M
Storage- 130 TMC
Time of Breach- 2hrs
Roughness Coefficient- 0.05
Breach Width- 450m
Storage- 130 TMC
Time of Breach- 2hrs
Roughness Coefficient- 0.05
Breach Width- 450m
Height of Breach - Full Dam Height
IDF – 80,000 Cumecs
IDF – 80,000 Cumecs
--------------------------------------------------------------
Unprecedented rains in North Karnataka from 29th Sep 2009 onwards flooded several districts and cut off areas like Bijapur, Bagalkot and Bellary, some places receiving over 50 cms of rains in a single day. The floods inundated the Krishna and Tungabhadra rivers. Karnataka released 25 lakhs cusec of water from Almatti and Narayanpur dams in a single day, a record of sorts. Ref:http://indianairforce.nic.in/show_page.php?pg_id=115
OUTPUT DATA
Distance from Dam (km) | Max. Water Surface Elevation | Max. Flow (Cumecs) | Time to Max. Elevation (hr.) | Max. Velocity (m/s) |
.000 | 518.76 | 111742 | 4.300 | 4.53 |
10.891 | 513.35 | 107278 | 4.900 | 4.24 |
20.421 | 508.65 | 105740 | 5.300 | 4.04 |
29.951 | 503.95 | 104716 | 5.700 | 3.87 |
39.481 | 499.10 | 103836 | 6.100 | 3.77 |
50.372 | 492.96 | 103076 | 6.500 | 3.82 |
59.902 | 485.89 | 102738 | 6.800 | 4.32 |
69.906 | 471.63 | 102596 | 7.100 | 5.44 |
79.772 | 456.29 | 102482 | 7.500 | 5.69 |
89.639 | 441.14 | 102380 | 7.800 | 5.88 |
99.505 | 426.10 | 102283 | 8.100 | 6.06 |
109.371 | 411.14 | 102190 | 8.400 | 6.23 |
119.237 | 396.26 | 102099 | 8.700 | 6.40 |
129.104 | 381.56 | 101993 | 9.100 | 6.54 |
140.864 | 369.36 | 101675 | 9.600 | 5.39 |
150.336 | 362.70 | 101331 | 10.000 | 5.06 |
159.808 | 356.38 | 100892 | 10.500 | 4.75 |
169.279 | 350.62 | 100256 | 11.200 | 4.40 |
180.461 | 345.06 | 99211 | 11.900 | 4.11 |
189.626 | 340.87 | 98221 | 12.700 | 4.13 |
200.623 | 336.39 | 96716 | 13.800 | 4.08 |
209.788 | 333.38 | 95130 | 14.700 | 3.93 |
220.785 | 330.68 | 93021 | 15.500 | 3.60 |
229.950 | 329.02 | 91340 | 16.000 | 3.30 |
240.175 | 327.31 | 89621 | 16.400 | 3.27 |
250.400 | 325.57 | 88021 | 16.900 | 3.24 |
260.625 | 323.78 | 86597 | 17.200 | 3.23 |
270.851 | 321.90 | 85420 | 17.600 | 3.21 |
279.372 | 320.25 | 84663 | 17.800 | 3.21 |
289.597 | 318.11 | 84038 | 18.000 | 3.25 |
299.822 | 315.72 | 83721 | 18.200 | 3.35 |
304.934 | 314.38 | 83679 | 18.200 | 3.43 |
http://www.ias.ac.in/currsci/dec102005/1785.pdf
Article on reservoir -induced seismicity which is expected at Alamatti dam reservoir also,resulting in promoting a Dam-burst
ALAMATTI DAM BREAK ANALYSIS (CASE-3)
Article on reservoir -induced seismicity which is expected at Alamatti dam reservoir also,resulting in promoting a Dam-burst
Data used as input for US based NWS DAMBRK Model Analysis
FRL – 524.26M
Storage- 227 TMC
Time of Breach- 2hrs
RoughnessCoefficient-0.05.,
Breach-Width-450m
Height of Breach - Full Dam Height
IDF – 80,000 Cumecs
Storage- 227 TMC
Time of Breach- 2hrs
RoughnessCoefficient-0.05.,
Breach-Width-450m
Height of Breach - Full Dam Height
IDF – 80,000 Cumecs
--------------------------------------------------------------
Unprecedented rains in North Karnataka from 29th Sep 2009 onwards flooded several districts and cut off areas like Bijapur, Bagalkot and Bellary, some places receiving over 50 cms of rains in a single day. The floods inundated the Krishna and Tungabhadra rivers. Karnataka released 25 lakhs cusec of water from Almatti and Narayanpur dams in a single day, a record of sorts. Ref:http://indianairforce.nic.in/show_page.php?pg_id=115
OUTPUT DATA
Distance from Dam (km) | Max. Water Surface Elevation | Max. Flow (Cumecs) | Time to Max. Elevation (hr.) | Max. Velocity (m/s) |
.000 | 518.76 | 111742 | 4.300 | 4.53 |
10.891 | 513.35 | 107278 | 4.900 | 4.24 |
20.421 | 508.65 | 105740 | 5.300 | 4.04 |
29.951 | 503.95 | 104716 | 5.700 | 3.87 |
39.481 | 499.10 | 103836 | 6.100 | 3.77 |
50.372 | 492.96 | 103076 | 6.500 | 3.82 |
59.902 | 485.89 | 102738 | 6.800 | 4.32 |
69.906 | 471.63 | 102596 | 7.100 | 5.44 |
79.772 | 456.29 | 102482 | 7.500 | 5.69 |
89.639 | 441.14 | 102380 | 7.800 | 5.88 |
99.505 | 426.10 | 102283 | 8.100 | 6.06 |
109.371 | 411.14 | 102190 | 8.400 | 6.23 |
119.237 | 396.26 | 102099 | 8.700 | 6.40 |
129.104 | 381.56 | 101993 | 9.100 | 6.54 |
140.864 | 369.36 | 101675 | 9.600 | 5.39 |
150.336 | 362.70 | 101331 | 10.000 | 5.06 |
159.808 | 356.38 | 100892 | 10.500 | 4.75 |
169.279 | 350.62 | 100256 | 11.200 | 4.40 |
180.461 | 345.06 | 99211 | 11.900 | 4.11 |
189.626 | 340.87 | 98221 | 12.700 | 4.13 |
200.623 | 336.39 | 96716 | 13.800 | 4.08 |
209.788 | 333.38 | 95130 | 14.700 | 3.93 |
220.785 | 330.68 | 93021 | 15.500 | 3.60 |
229.950 | 329.02 | 91340 | 16.000 | 3.30 |
240.175 | 327.31 | 89621 | 16.400 | 3.27 |
250.400 | 325.57 | 88021 | 16.900 | 3.24 |
260.625 | 323.78 | 86597 | 17.200 | 3.23 |
269.146 | 322.22 | 85597 | 17.500 | 3.21 |
279.372 | 320.25 | 84663 | 17.800 | 3.21 |
289.597 | 318.11 | 84038 | 18.000 | 3.25 |
299.822 | 315.72 | 83721 | 18.200 | 3.35 |
304.934 | 314.38 | 83679 | 18.200 | 3.43 |
ALAMATTI DAM BREAK ANALYSIS (CASE-4)
Data used as input for US based NWS DAMBRK Model Analysis
FRL – 519.6m
Storage- 130 TMC
Time of Breach- 2hrs
Time of Breach- 2hrs
Roughness Coefficient-0.05.,
Breach-Width-450m
Height of Breach - Full Dam Height
IDF – 45,000 Cumecs
IDF – 45,000 Cumecs
--------------------------------------------------------------
Unprecedented rains in North Karnataka from 29th Sep 2009 onwards flooded several districts and cut off areas like Bijapur, Bagalkot and Bellary, some places receiving over 50 cms of rains in a single day. The floods inundated the Krishna and Tungabhadra rivers. Karnataka released 25 lakhs cusec of water from Almatti and Narayanpur dams in a single day, a record of sorts. Ref:http://indianairforce.nic.in/show_page.php?pg_id=115
Distance from Dam (km) | Max. Water Surface Elevation | Max. Flow (Cumecs) | Time to Max. Elevation (hr.) | Max. Velocity (m/s) |
0 | 517.91 | 108629 | 3.000 | 4.48 |
10 | 512.30 | 103399 | 3.700 | 4.19 |
20 | 507.51 | 100367 | 4.200 | 3.98 |
30 | 502.76 | 97765 | 4.700 | 3.82 |
40 | 497.20 | 95405 | 5.200 | 3.69 |
50 | 491.78 | 94044 | 5.600 | 3.71 |
60 | 484.92 | 93419 | 5.900 | 4.16 |
70 | 470.77 | 93170 | 6.200 | 5.27 |
80 | 455.44 | 92975 | 6.600 | 5.50 |
90 | 440.27 | 92793 | 6.900 | 5.68 |
100 | 425.20 | 92619 | 7.200 | 5.85 |
110 | 410.21 | 92459 | 7.600 | 6.01 |
120 | 395.29 | 92300 | 7.900 | 6.17 |
130 | 380.52 | 92125 | 8.200 | 6.32 |
140 | 368.11 | 91616 | 8.800 | 5.18 |
150 | 361.50 | 91090 | 9.200 | 4.86 |
160 | 355.17 | 90475 | 9.600 | 4.57 |
170 | 349.34 | 89642 | 10.200 | 4.24 |
180 | 343.64 | 88338 | 10.800 | 3.96 |
190 | 339.27 | 87196 | 11.400 | 3.98 |
200 | 334.46 | 85621 | 12.200 | 3.93 |
210 | 331.16 | 84017 | 13.000 | 3.78 |
220 | 328.24 | 81848 | 13.900 | 3.45 |
230 | 326.54 | 80111 | 14.400 | 3.12 |
240 | 324.84 | 78352 | 14.900 | 3.09 |
250 | 323.11 | 76705 | 15.400 | 3.07 |
260 | 321.34 | 75180 | 15.900 | 3.05 |
270 | 319.50 | 73841 | 16.300 | 3.05 |
280 | 317.88 | 72951 | 16.600 | 3.05 |
290 | 315.78 | 72241 | 16.800 | 3.07 |
300 | 313.42 | 71913 | 17.000 | 3.17 |
304 | 312.09 | 71873 | 17.000 | 3.25 |
A.P.STATE KNOWS HOW TO GET DAM BREAK ANALYSIS REPORTS PREPARED FOR IRRIGATION PROJECTS,BUT FAILED TO GET IT DONE FOR ALAMATTI DAM AND THEREBY MISLEAD KRISHNA TRIBUNAL WHO ILLEGALLY DECIDED ON ALAMATTI DAM HEIGHT
Stae of art technology in Water Resoures Management emphasises smaller dams and barrages for augmenting water resources for improved agriculture and food production in place of bigger and hazardous large dams in the light of growing number of dam bursts due to extreme floods being caused by inensifying cyclones of longer duration and also the frequent number of dam bursts which are about 68 per year in China. See web:
http://www.theepochtimes.com/news/6-6-11/42574.html
( Click on " Article by President,ICOLD, See Web: LBergaextremefloods.doc) The latest methods of estimating peak floods by L.berga have to be used for scientific estimates of floods.
GOVERNMENT OF ANDHRA PRADESH
ABSTRACT
Major Irrigation - Nagarjunasagar Dam – Carrying out Dam Break Analysis and Preparation of Emergency Action Plan(EAP) – Proposals for entrusting the work to National Institute of Hydrology, Roorkie –Administrative sanction for an amount of Rs.10,60 lakhs - Accorded-Orders-Issued.
-------------------------------------------------------------------------------------------------------------------
IRRIGATION AND CAD(MAJOR.VII)DEPARTMENT
G.O.Rt.No. Dated:21- 02-2011.
Read the following -
1. From the Chief Engineer, Nagarjunasagar Project letter No.CE/ NSP/TS1/AE.2/ 16/MDRN/
N.S.Dam/Vol.3.(PF),dated:27-10-2009.
2. Govt.Memo.No.28531Major.Irrgn.VII/2010, Dt:2-12-2009
3. From the Chief Engineer, Nagarjunasagar Project letter No.CE/ NSP/TS1/AE.2/16/ MDRN/
N.S.Dam/Vol.3(PF),dated:18-08-2010
4. Govt.Memo.No.28531Major.Irrgn.VII/2010, Dt:1-11-2010
5. From the Chief Engineer, Nagarjunasagar Project letter No.CE/ NSP/TS1/AE.2/16/MDRN/
N.S.Dam/Vol.3(PF),dated:1-12-2010
.@@@
ORDER
In the circumstances reported by the Chief Engineer, Nagarjunasagar Project, Guntur in the references read above, Government after careful examination of the proposal hereby accord administrative sanction for carrying out Dam Break Analysis and Preparation of Emergency Action Plan (EAP) with estimated cost of Rs10.60 Lakhs along with permission of the Government for entrusting the subject work to National Institute of Hydrology, (NIH) Roorkie for Rs.10.60 ( Rupees Ten Lakhs and Sixty Thousand Only) duly making advance payment of 75% of the total cost at the time of awarding work to the National Institute of Hydrology, (NIH) Roorkie duly incorporating the observations of the Government, in the estimate
2. The amount sanctioned in para (1) above shall be debited to the Head of Account
“MH 2701- M & Major Irrigation - 01 MIC -101 NSP-GH – 11 Normal State Plan – 26 D&A – 270/272 Maintenance.”
“MH 2701- M & Major Irrigation - 01 MIC -101 NSP-GH – 11 Normal State Plan – 26 D&A – 270/272 Maintenance.”
3. This order issues with the concurrence of Finance (W&P) Department - vide their U.O.No.4349/F.2(1)/2010-1, dated 13.10.2010.
(BY ORDER AND IN THE NAME OF THE GOVERNOR OF ANDHRA PRADESH)
ADITYA NATH DAS
SECRETARY TO SECRETARY
To
The Chief Engineer Nagarjunasagar Project, Guntur District
Copy to:
The Finance (W&P)Department.
The PS to Secretary (AD) I&CAD Department
SF/SC
//FORWARDED : : BY ORDER//
SECTION OFFICER
1 comment:
The calculations on Alamatti Dam break analysis for Alamatti dam has been done by the Central WATer Commission at the request of the Karnataka state which indicated that even when this 100ft high dam breaks down the flash floods will be confined within the banks of the river and no flood water will overflow the banks on either sideof the river and cause submersionof any of the villages. Whne such an evidence has been presented by Karnataka how did the officials, experts, engineers and advocates of Maharashtra and Andhra Pradesh remained as silent spectators before the tribunal when commonsense tells them that such huge wall of flood will certainly cause flood havoc to hundreds of villages on either side of the bank because the floods banks of Krishna river cannot contain more water than the depth of the river and the embankment portions which together will not be morethan 20ft to 30ft high in most of the sections of the river. Thus both Maharashtra and Andhra Pradesh when asked by the tribunal what injury willbe caused to the states the Governemntofficials by keeping silent have indirectly helped the Brijeshkumar tribunal to give a wrong judgement and thereby they were forced to increase the height of the Alamatti dam from the existing 519m elevation to 524.26m elevation and this elevation will again be increased to 528.3m as recently decided by the Karnataka Government by approaching the Supreme Court for this purpose. Then it is the duty of the people of Andhra Pradesh, Karnatkaa and Maharashtra to take up this life and death issue of submersion of hundreds of villages due to Alamatti dam which can be modified by constrution of small dams and barrages like Hippargi instead of the Karnatkaa Government opting for a big killer dam at Alamatti which may not afterall get the environemntal clearance based upon environmental imapct assessemnt report to be submitted as per the rules of the environemntal protection Act 1986 which provides for submissionof Dam Break Analaysis reports and emergency Action Plan reports which will demonstrate that trhe costs of damage due to a dam collapse at Alamatti will be several times higher than the benefits likely to achieved by constructionof this big killer dam. Even today the people of the basin states must agitate and organsie demonstrations to request the state governments to get the height of the Alamatti dam reduced from +519.6m to 515m to avoid submersioof lands in Maharashtra whose borders stand at an elevation of 518m above the mean sea level. The Prime Minister and the Minister for Environment should make a representation through the Ministryof Water Resources and the Central WAter Commission to request the Brijesh Kumar tribunal not to promote environemntal and economic disasters of the nation but promote susjtainable development and national economic growth by discharging their responsibilites as envisaged under article 51 A(g) of the constitution of Idia.
T.V.Rama Rao, M.Com
Kotabommali
Srikakulam District
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