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It is also critically important to use native vegetation as it is more likely to take hold. The branches will be dormant, but they will have side branches that will allow vegetation. To implement live siltation, Submar uses natural stone, logs, root wad revetments, or willow wattles.
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If done correctly, live siltation methods can create spaces for riparian vegetation. Similarly, live siltation works best in areas of low velocity where silt can be deposited quickly. Those installing deep-water pipelines will want to look into other methods. Live siltation only works in areas where there is shallow water and a slope. In order for live siltation to work effectively, it is critical to know the high water point. The result of live siltation is often a brushy living system at the edge of the water. It is typically used in conjunction with other toe-of-slope protection that sit below ordinary high water, such as a coir log or cabled spruce trees. Live siltation is a streambank stabilization technique that relies upon revegetation. To many, Submar articulated concrete mats are an invaluable and permanent restoration measure.Another streambank stabilization method is live siltation. The more the vegetation grows, the less chance there is for pipeline exposure. Over time, the plants will grow through the hole and overgrow the mats. Articulated concrete mats are heavy enough to remain in place during runoff, and Submar’s mats contain small openings that allow vegetation to take hold in the soil, allowing for a more natural stabilization of the site. These mats are flexible and can be used in almost any job application. However, companies should not use top soil as a trench breaker material, as this will not slow the rate of water runoff.Īnother option to reduce the need for future pipeline exposure remediation is articulated concrete revetment mats, also known as articulated concrete block mats (ACBMs). Companies can use a variety of materials to construct their trench breakers, including polyurethane foam and sandbags. These are devices that are designed to slow the rate of water flow along the trench. This can include adding soil to any land that eroded during the construction process and refilling areas that were purposely dug to account for runoff.Īn excellent option to avoid pipeline exposure remediation is trench breakers. One of the ways to do so is re-grading slopes and backfilling trenches. Once construction of a pipeline is complete, permanent restoration measures can begin. Once you have completed a pipeline installation project, Submar recommends investing in permanent restoration measures to reduce the need for future pipeline exposure remediation, which can be costly.