Wednesday, February 9, 2011

ALAMATTI DAM BREAK ANALYSIS-LATEST VERSION

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
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       
Height of Breach=Full Dam Height .,   
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          
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
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)
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
--------------------------------------------------------------
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  
Roughness Coefficient-0.05.,
Breach-Width-450m    
Height of  Breach - Full Dam Height    
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.”

 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:

Anonymous said...

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

About Me

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Born in 1932 at Mudinepalli, near Gudivada, Krishna Dist. Andhra Pradesh, received Bachelors degree in Civil Engg., from Viswesaraiah Engineering College, Banglore (1956) and Masters Degree in Environmental Engineering from Rice university, Houston, Texas, (USA) (1962), Ph.D (Hony). Former Head of the Department of Civil Engineering and principal of College of Engineering, Andhra university.Formerly Hony.Professor in Andhra University,Manonmanian Sundarnar University,JNT University. Fellow of the Institution of Engineers,India Recipient of the University Grants Commissions National Award "Swami Pranavananda Award on Ecology and Environmental Sciences" for the year 1991. Recipient of Sivananda Eminent Citizen Award for 2002 by Sanathana Dharma Charitable Trust, Andhra Pradesh state. Presently Working as Director, centre for Environmental Studies, GITAM University, http://www.geocities.com/prof_shivajirao/resume.html http://www.eoearth.org/contributor/Shivaji.rao