两种框格梁生态护坡技术及其应用效果——以安徽岳武高速公路为例

发布时间：2018-06-21 19:24

本文选题：生态护坡 + 框格梁复合植被毯　；参考：《中国水土保持科学》2015年05期

【摘要】：为了选择更适合在山区高速公路推广应用的生态护坡模式,选取安徽岳武高速公路边坡为试验区,以框格梁复合植被毯生态护坡技术及框格梁植生袋护坡技术作为试验坡面的植被恢复措施,调查并对比分析植物生长情况、土壤理化性质和水土保持效果。结果表明:施工半年后,采用框格梁复合植被毯生态护坡技术试验小区的灌木成活率、株高、基茎、冠幅、盖度均优于框格梁植生袋试验小区,且土壤孔隙度增加了2.78%,全氮增加了0.31 mg/kg,有效磷增加了3.59 mg/kg,速效钾增加了4.79 mg/kg,有机质增加了3.06 g/kg,土壤侵蚀厚度减少了1.7 mm,土壤侵蚀量减少了2 379.2 t/km2。对比2种生态护坡模式的经济成本,发现框格梁复合植被毯技术的施工效率更高,植被建植成本更低,养护费用及养护年限更少。
[Abstract]:In order to select the ecological slope protection model which is more suitable for the popularization and application of mountain expressway, the slope of Anhui Yuewu Expressway is selected as the experimental area. The ecological slope protection technology of frame girder composite vegetation blanket and the slope protection technology of frame grid beam planting bag were used as the vegetation restoration measures on the experimental slope surface. The plant growth, soil physical and chemical properties and soil and water conservation effect were investigated and analyzed comparatively. The results showed that the shrub survival rate, plant height, basal stem, crown width and coverage were better than those in the experimental plot with the frame beam composite vegetation blanket ecological slope protection technique after six months of construction, and the results showed that the shrub survival rate, plant height, basal stem, crown width and cover degree of the plot were better than those of the experimental plot. The soil porosity increased by 2.78 mg / kg, total nitrogen increased by 0.31 mg / kg, available phosphorus increased by 3.59 mg / kg, available potassium increased by 4.79 mg / kg, organic matter increased by 3.06 g / kg, soil erosion thickness decreased by 1.7 mm and soil erosion decreased by 2 379.2 t / km2. Compared with the economic cost of the two ecological slope protection models, it was found that the construction efficiency of the composite vegetation blanket technology was higher, the construction cost of vegetation was lower, and the maintenance cost and maintenance years were less.
【作者单位】：北京林业大学水土保持学院;东方园林股份有限公司;安徽省高速公路控股集团有限公司;北京盛鑫嘉华环保科技有限公司;
【基金】：安徽省交通科技项目“高速公路生态型护坡技术应用研究”(AHGS 2013-5)
【分类号】：U417.12;S157

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