Channel Protection
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Flexible and durable protective lining is possible with MiraCell™ cellular confinement system. Various infill options can provide desired roughness for effective flow conditions. Multi layer system allows construction of various drainage structures easily.
MiraCell™ Cellular Confinement Systems provide a wide variety of flexible erosion control treatments for open channels and hydraulic structures. The structural performance and durability of conventional protection materials such as concrete, gravel, riprap and vegetation can be significantly improved by confining the materials within the cells of MiraCell™ systems. Benefits of Cellular Confinement Confinement of loose aggregate within MiraCell™ to form hard channel protection provides additional resistance to tractive forces. The limiting hydraulic stresses relate to the particle size that are exposed at the surface of the individual infilled cells rather than the finer aggregate particles that are confined at depth within the cell walls. The cell walls limit flow through the aggregate layer and thereby prevent the development of localized flow channels in the protective layer. In the event that flow conditions produce tractive forces at or slightly above the limiting values for the exposed aggregate particles, partial cell emptying can occur. The effect of such emptying is an increase in the stability of the system as a whole due to the projection of the cell walls into the stream flow. The erosion resistance of an
aggregate-filled MiraCell™ lining can be increased without
losing the inherent flexibility of the system by applying a
concrete surface grout. When concrete grouts are applied to
the surface of aggregate infill to increase erosion
resistance, a minimum grout-penetration depth of 25 mm (1
in) is recommended.
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