Stability Thresholds and Performance Standards for Flexible Lining Materials in Channel and Slope Restoration Applications
ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB
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Selecting the right channel and bank stabilization materials for channel restoration is critical, but is complicated by the limited availability of comprehensive performance criteria, an increasing number of new materials, and limited information regarding installation methods. Performance criteria for channel stabilization materials have traditionally focused on hydraulic parameters such as shear stress and flow velocity, but field performance of these materials is also dependent on non-hydraulic factors. Material selection, design, construction, and installation procedures are all critical to performance and project success. This technical note is intended to supplement recommendations provided in ERDC TN-EMRRP-SR-29, Stability Thresholds for Stream Restoration Materials Fischenich 2001, which focused on hydraulic performance data for a variety of materials. This supplement focuses on flexible channel lining materials. An overview of selected design and installation criteria is provided, including critical materials properties, regional or climatic conditions, ecological considerations, and specific project applications. Project failure mechanisms are also discussed. Recommendations for product selection and field installation monitoring are summarized.
- Civil Engineering