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Presents the studies performed to evaluate the performance of rolled erosion control products (RECPs) in the prevention of sheet erosion in a road cut slope, under simulated rain conditions. The four different covers used were: ARP 430 – vegetative screen, ARP‐440 – biotextil screen, grass mulch geotextil, control 1 (no rolled product and no vegetation), and control 2 (only grass vegetation and no rolled product). A road slope with dimensions of 47.20m in length, an average height of 7.68m and slope angle of 45° in red podzolic soil was chosen to perform this experiment, due to its edaphics and climatic similarity to most existing Brazilian road slopes found in south and south‐east regions. The erosion parameters were evaluated along the experiment for 360 days. Two simulated rains were performed at 330 days and at 360 days of the experiment. A rain intensity of 65mm/h was chosen to simulate the actual rain conditions in the area. Physical and chemical characterization, fertilization testing and erosion studies were performed to better evaluate the most appropriate conditions for vegetative growth and erosion prevention udner tropical climate conditions.

Soil erosion, transport and deposition of sediments represent invisible threats that along time can affect negatively the existing infrastructure of roads and dams, and the quality of air and water resources. In the last decades, a great number of researches were devoted to study erosion and sediments transportation processes. However, they addressed mostly areas of agriculture, water impoundments for dams, and land conservation. A lack of studies for erosion processes in urban areas is evident, in special those aiming to diminish the deposition of sediments originated from urban areas into the rivers and air, in special as airborne particulate. Traditionally, the costs associated in controlling erosion and sediments in urban areas are high and in some case, out of the range for most developing countries. Factors responsible for those high prices are the use of heavy equipments for soil grading and transportation, the use of costly building materials, and the need for employing more specialized personnel. In the case of gullies in urban areas, another concern is to ensure proper equipment access to the area for remediation operations. Hereby, it is presented a cost-effective method to recover an extensive gully erosion area of about 11,000 m 2 located in urban area. Estimated sediments released from this area to the water resources and air were estimated on about 66,000,000 tons. In this study area, bioengineering works were performed in 60 days, with hardly any sediment generated outside the work area resulting from bioengineering operations. A combination of bioengineering techniques were chosen for this study area, which was a mixture of rigid and biological products including biologs, silt fence, biodegradable straw blankets sewn with plastic threads derived from recycled PET bottles, among others. An efficient drainage system was implemented for preventing upland flow, sub-seepage and

Por razões técnicas o resumo deste artigo não está disponível. Para maiores informações baixar arquivo completo.

Por razões técnicas o resumo deste artigo não está disponível. Para maiores informações baixar arquivo completo.