comparison between different method of under water canal
TRANSCRIPT
Comparison between different method of under water canal lining
Submitted By
Shivam Mittal
Comparison Based on
1. Cost effectiveness
2. Installation and need of resources
3. Period of construction
4. Environmental Impact
Methods Under Comparison
Conventional Method( lining by CC)
Clay Geosynthetic(CGS) Liner
Grouted Mattress(GM) Liner
Cost Effectiveness
Canal Section Under study
Slide Slope m=1Flow Perimeter P = (b+2*2½y) m = p meterLength of canal= 1km = 1000m
CC Lining
For 100 m3/sec and above discharge thickness of concrete lining= 100mm = .1 m
And Concrete grade used M15 (Theory and design of irrigation structure- R.S. Varshney)
volume of concrete= 1000*0.1*p = 100p m3
Rate of M15 ready mix concrete= 3200 INR
Cost of CC lining= 3200*100p = 320000p INR
CGS lining
• Area required = 1000*p
( neglect the CGS thickness)
Cost of CGS= 3$ /m2= 3*65 INR/m2
Cost of CGS lining= 3*65*1000p
= 195000p INR
Grouted Mattress
Volume required= 1000*0.1*p m3
Cost of Grouted Mattress= 25 $ / m2= 25*65 INR/m3
Cost Of Grouted Mattress lining= 25*65*1000*p
= 162500 INR
0
50000
100000
150000
200000
250000
300000
350000
1. Conventional method ( CC
method)
2. Clay Geosynthetic
Liner
3. Grouted Mattress
320000
195000
162500
Rate(INR)
Grouted Mattress provide a more overall cost effective application than other two lining methods.
Conclusion
Installation and need of resources
• CGS lining only require small equipment a minimum amount of labour for installation.
• CGS and Grouted mattress are factory manufactured so installation is easy but on site grouting process is needed in Grouted mattress.
• CGS and Grouted Mattress installation easily on difficult access or placement areas.
• CC lining needs heavy equipment and dedicated man power.
• CC lining method has slow and complicated construction process.
• Thickness of CC and Grouted Mattress lining is very high.
CGS Lining
Grouted Mattress Lining
Conventional Lining
Conclusion
Period of construction
CC Lining
GM lining
CGS lining
The period of construction of Conventional Lining(CC lining) takes more time as compare to CGS and Grouted Mattress lining.
Environmental Impact
One Truckload of CGS replaces up to…
… 200 trucks of Cement Concrete
So significant decrease in noise, dust, sediment and non-point source pollution.
References
• ATM environmental solution, USA
• Theory and Design of Irrigation Structure, R.S.
Varshney
• NPTEL online library, IITB
• Ashapura CGS manufacturing, India