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Advanced Bioengineering Techniques in Civil Engineering for Soil and Water Protection

Welcome to Salix! Explore the innovative field of bioengineering, which integrates vegetation with natural and artificial materials in civil engineering for effective soil and water protection. Richard Edwards discusses common misconceptions, including the belief that bioengineering is purely a soft solution. He addresses the importance of proper product selection and the potential for bioengineering in high-energy environments. Through detailed case studies, learn how to effectively combine hard and soft engineering methods for sustainable outcomes in slope stabilization, surface protection, and habitat creation.

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Advanced Bioengineering Techniques in Civil Engineering for Soil and Water Protection

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Presentation Transcript

  1. Welcome to Salix! Bioengineering – the use of vegetation and natural/man made materials in Civil Engineering construction for surface soil protection, slope stabilisation, watercourse and shoreline protection Richard Edwards

  2. Typical Issues and Problems • Incorrect choice of product/solution (Willow spiling/soil filled geotextiles) • Concept that bioengineering is always a soft solution (Hard/soft combine) • Bioengineering can only be used in low energy rivers (Not true) • No performance data with bioengineering materials (There is!) • Long term performance • Maintenance issues (standard get out clause even within the EA) • Not involved till it’s too late (ECI vital) • General civil contractors used on frameworks rather than specialists

  3. Bioengineering correct choice • Challenge soft and hard engineering • Study failures. Why? • Right technique for problem • Undermines confidence • Once bitten twice shy.... Soil erosion control and habitat creation

  4. Bioengineering can be a combination of hard and soft. Replacing four tiers of blockstone

  5. Mobile Gravel/Cobble Bed Cobble Bed Degradation/Bed Down cutting Shading Very Steep/High Energy Blockstone Proposed

  6. Bioengineering Solution

  7. Bioengineering Solution

  8. BioEngineering Solution

  9. 6 weeks on

  10. Slopes Cut & Prepared in Colliery ShaleGrass & Legume Mix Sown Case study 2 River Ebbw – High Energy Blockstone Replacement

  11. High Performance Composite-TRM installed NAG P550 over prepared surface

  12. High Performance C-TRM with Rock Roll & Willow Fascine Toe Live Willow and rock roll toe revetment

  13. Completed Installation Completed Installation

  14. 4 m/s flood! One flood event onto unprotected slopes

  15. Blockstone v bioengineering One year later.

  16. Blockstone v bioengineering Five years later.

  17. Blockstone v bioengineering Five years later....

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