红壤喷洒粘着剂之防冲效果

Effect of Sprayed Adhesive on the Red Soil Erodibility

台湾因地形、地质与气候的关系故崩塌与土壤流失颇多,加上人为过度开发与土地超限利用结果,遂造成不少土砂灾害问题。为了加速国土的复育,水土保持植生工程中常加入黏着剂除使植物种子有效的停留于坡面生长外,也有保护坡面防止土壤冲蚀的目的。研究乃以亚热带地区常见的红壤为试样,喷洒常用的3种粘着剂,并在降雨强度50,80,110mm/h及坡度16.7°,21.8°与28.8°的情况下进行60min试验。结果表明:高分子黏着剂较其它2种材料能保持稳定的抗冲蚀效果,压克力树脂于高强度降雨冲蚀较多,德国柏油乳剂则坡度愈陡冲蚀愈多。

Because of the topography, geology and climate, so there are quite many landslides and soil loss in Taiwan. Furthermore, people exceed the land utilized limit for overdevelopment and the result should cause much more sediment disasters question. In order to accelerate national land reconstruction, vegetation engineering of soil and water conservation often put adhesive into the project of sprayed work to make plant seed effective staying and growing, and there is the purpose of protecting slope land surface for soil erosion. This research regard common red soils of subtropical area as testing samples, spray three kinds adhesive to carry on 60 min test with the rainfall intensity 50, 80,110 mm/h and slope gradient 16.7°, 21.8°, 28.8°. The results show that soil spraying with polymer adhesive treatment can remain stable reod- ibility more than other two kinds material. Soil spraying with acrylic resin treatment has more soil erosion in high strength rainfall. Soil spraying German bitumen emulsion treatment has more soil erosion in steep slope conduction.