18.06.2014 Seite 1
Bamboo breakwaters
Site-specific erosion protection and adaptation to climate change
in Soc Trang Provi...
18.06.2014 Seite 2
Outline
1. Introduction
2. Methodology
3. Construction
4. Monitoring
5. Conclusions
1
18.06.2014 Seite 3
2
18.06.2014 Seite 4
 Narrow belt of mangrove forest along the coast line
 Dynamic coast line (process of accretion and er...
18.06.2014 Seite 5
4
In some sites the dyke is threatened by erosion.
Can we rehabilitate mangroves in such sites to prote...
18.06.2014 Seite 6
Mangroves grow along sheltered
coastline.
Rehabilitating mangroves only possible
after the wave energ...
18.06.2014 Seite 7
2. Methodology
 Numerical modelling using open
source software (SWAN,
RMA·Kalypso, GENESIS)*
 Use exi...
18.06.2014 Seite 8
Physical modelling of wave transmission with the bamboo fence
72. Methodology
18.06.2014 Seite 9
3. Construction
 Local labour
 Bamboo poles
 Brushwood bundles
 Rattan, jute, stainless steel
wire ...
18.06.2014 Seite 10
93. Construction – Installation of one bamboo T-fence, June 2012
18.06.2014 Seite 11
3. Construction
103. Construction – Site map
T-shaped bamboo fences in Nopol
18.06.2014 Seite 12
4. Monitoring
 Visual control
 Photo documentation
 Benchmarks
 GPS shoreline survey
 Mangrove mo...
18.06.2014 Seite 13
Wave transmission coefficients
derived from physical modelling and field measurements
124. Monitoring
18.06.2014 Seite 14
5. Conclusions
155. Conclusions
 Coastal protection and climate change adaptation
measures must be si...
18.06.2014 Seite 15
5. Conclusions
155. Conclusions
1,800 m completed
2,850 m under construction
1,500 m planned
 Tota...
Thank you for your attention!
Upcoming SlideShare
Loading in …5
×

Bamboo breakwater icec_2012

372
-1

Published on

Published in: Technology, Business
0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total Views
372
On Slideshare
0
From Embeds
0
Number of Embeds
2
Actions
Shares
0
Downloads
8
Comments
0
Likes
1
Embeds 0
No embeds

No notes for slide

Bamboo breakwater icec_2012

  1. 1. 18.06.2014 Seite 1 Bamboo breakwaters Site-specific erosion protection and adaptation to climate change in Soc Trang Province, Vietnam Dr. Klaus Schmitt, Dr. Thorsten Albers & Arndt von Lieberman Presented by Phạm Thùy Dương 4th International Conference on Estuaries and Coasts 8 - 11 October 2012, Hanoi, Vietnam
  2. 2. 18.06.2014 Seite 2 Outline 1. Introduction 2. Methodology 3. Construction 4. Monitoring 5. Conclusions 1
  3. 3. 18.06.2014 Seite 3 2
  4. 4. 18.06.2014 Seite 4  Narrow belt of mangrove forest along the coast line  Dynamic coast line (process of accretion and erosion up to 30 m/yr)
  5. 5. 18.06.2014 Seite 5 4 In some sites the dyke is threatened by erosion. Can we rehabilitate mangroves in such sites to protect the coast from erosion and storms? 1. Introduction 1. Introduction
  6. 6. 18.06.2014 Seite 6 Mangroves grow along sheltered coastline. Rehabilitating mangroves only possible after the wave energy has been reduced by physical barriers.  Breakwaters: reduce erosion & stimulate sedimentation. Mangrove rehabilitation in erosion sites 51. Introduction 1. Introduction Appropriate designs based on numerical modelling (which simulates hydrodynamics and shoreline development) to minimise downdrift erosion.
  7. 7. 18.06.2014 Seite 7 2. Methodology  Numerical modelling using open source software (SWAN, RMA·Kalypso, GENESIS)*  Use existing data  Field measurements  Physical modelling (*see www.czm-soctrang.org.vn) 62. Methodology
  8. 8. 18.06.2014 Seite 8 Physical modelling of wave transmission with the bamboo fence 72. Methodology
  9. 9. 18.06.2014 Seite 9 3. Construction  Local labour  Bamboo poles  Brushwood bundles  Rattan, jute, stainless steel wire for connections 83. Construction – Materials & labours
  10. 10. 18.06.2014 Seite 10 93. Construction – Installation of one bamboo T-fence, June 2012
  11. 11. 18.06.2014 Seite 11 3. Construction 103. Construction – Site map T-shaped bamboo fences in Nopol
  12. 12. 18.06.2014 Seite 12 4. Monitoring  Visual control  Photo documentation  Benchmarks  GPS shoreline survey  Mangrove monitoring  Mud density analysis  Wave measurements 114. Monitoring
  13. 13. 18.06.2014 Seite 13 Wave transmission coefficients derived from physical modelling and field measurements 124. Monitoring
  14. 14. 18.06.2014 Seite 14 5. Conclusions 155. Conclusions  Coastal protection and climate change adaptation measures must be site-specific and appropriate:  based on a sound understanding of natural processes  numerical modelling as part of an integrated approach to coastal area management (ICAM)  testing of innovative approaches (not one solution fits all)  bamboo breakwaters and t-fences are an effective way of coastal protection, create conditions for mangrove rehabilitation in erosion sites.
  15. 15. 18.06.2014 Seite 15 5. Conclusions 155. Conclusions 1,800 m completed 2,850 m under construction 1,500 m planned  Total of 6,150 m Current state of construction
  16. 16. Thank you for your attention!

×