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"Bio-Stabilization Case reviews: remedy and function assessment" describes and evaluates 30 tasks from around the usa the place bio-stabilization was once hired to handle a damaging obviously happening procedure or byproduct of the equipped atmosphere. Bio-stabilization (or soil bioengineering) refers back to the use of plant fabrics, basically reside cuttings, prepared within the floor in several arrays to augment soils and defend upland slopes and/or circulate banks opposed to surficial erosion and shallow slope mess ups. Examples integrated within the assortment signify various areas of the rustic and their particular stipulations and demanding situations. every one venture is illustrated with a few particular images to aid the reader's realizing and exhibit the vast scope of tasks and methods provided. the amount is perfect for civil and environmental engineers and environmental scientists engaged on watershed, infrastructure initiatives, and municipal scale installations.
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Extra info for Bioengineering Case Studies: Sustainable Stream Bank and Slope Stabilization
W. 1007/978-1-4614-7996-3_5, © Springer Science+Business Media New York 2014 27 28 Bioengineering Case Studies Fig. 2 Stream bank before restoration TREATMENT OBJECTIVES AND CONSIDERATIONS: The main goal was the need to remove the concrete rubble on the bank and replace with a natural, less visually intrusive protection system. Another goal was to provide visitor access to the river at the site. These considerations resulted in a bank protection system consisting of a vegetated riprap at the toe of the bank combined with a fascine row above the rock armor and an erosion control blanket placed above the fascine to the bank top.
A drainage pipe was also placed in a trench excavated along the road to convey slope runoff away from the site. A sloping drainage course (chimney drain) consisting of a polymeric blanket drain with a high in-plane, hydraulic conveyance was placed behind the VMSE retaining structure. This drainage blanket intercepts seepage and conveys it to a subdrain system that discharges directly to the river. This measure minimizes undesirable saturation of the fill beneath the roadway and structural fill in the VMSE retaining structure.
SITE CONDITIONS AND PROBLEMS: Uncontrolled storm flows caused channel head-cutting and down-cutting in the Glen itself. These in turn under-mined adjacent stream banks and side slopes, which resulted in serious slope failures. The combination of surficial erosion, channel scour, and slope failures produced massive losses of soil (see Fig. 2). At low water, a large sediment delta was clearly visible at the confluence of the Glen’s ravine with the Huron River. Soils are primarily sandy to clay loams over a hard clay till, which is exposed at the bottom of the ravine in the Glen.