The effects of biological geotextiles on gully stabilization in São Luís, Brazil

This paper analyses the contribution of biological geotextiles to gully stabilization in the urban area of São Luis City (Sacavém District). Biological geotextile mats were constructed from palm leaves. At Sacavém, gully rehabilitation included the following techniques: (1) installation of Buriti ge...

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Bibliographic Details
Published in:Natural hazards (Dordrecht) 2015-02, Vol.75 (3), p.2625-2636
Main Authors: Guerra, A. J. T., Bezerra, J. F. R., Fullen, M. A., Mendonça, J. K. S., Jorge, M. C. O.
Format: Article
Language:English
Subjects:
Biological
Biological effects
Civil Engineering
Construction
Earth and Environmental Science
Earth Sciences
Environmental Management
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
Geotextiles
Grasses
Gullies
Hydrogeology
Leaves
Natural Hazards
Original Paper
Particle size
Seeds
Soil (material)
Soil erosion
Soil mechanics
Soil properties
Stabilization
Terraces
Textiles
Urban areas
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Summary:This paper analyses the contribution of biological geotextiles to gully stabilization in the urban area of São Luis City (Sacavém District). Biological geotextile mats were constructed from palm leaves. At Sacavém, gully rehabilitation included the following techniques: (1) installation of Buriti geotextiles, in association with barriers of wooden stakes and the construction of contoured terraces; (2) analysis of sediment particle size and (3) photograph comparison of the development of vegetal cover. Rehabilitation used ~30 kg of grass seeds ( Brachiaria decumbens ) on slopes, in combination with geotextiles. Besides recuperating a degraded area, income has been generated to poor people, who live around Sacavém gully, either by producing the geotextiles or by applying them on the soil, together with grass seeds, lime and NPK to improve soil properties.
ISSN:0921-030X
1573-0840
DOI:10.1007/s11069-014-1449-0