干旱半干旱区公路水土保持措施对土壤物理性质的影响

摘要

In order to better carry out in arid and semi-arid area of highway soil conservation, protection of ecological environment in arid and semi-arid areas along the highway, with 045 national highway trunk line Sailimu to Guozigoukou expressway as an example, the changes of soil physical properties were analyzed and studied after applying soil and water conservation measures for 6 years.The results showed that the re-gion was suitable to natural recovery without excavation slope protection measures, anti erosion of soil was better.Fill slope was suitable to be protected by planting local plants and adopting engineering measures.The lower part of the slope protection measures can no longer use without affecting the slope stability, the anti erodibility was relatively better, soil engineering measures inclined arch skeleton measures.%为了更好地开展干旱半干旱区的公路水土保持工作,保护干旱半干旱区公路沿线的生态环境,以国道045主干线赛里木湖至果子沟口段高速公路为例,分析研究了水土保持措施布设6年后的土壤物理性质变化.结果表明,该区域挖方边坡适宜采用无防护措施,任其自然恢复,其土壤的抗冲抗蚀性更好;填方边坡适宜采用工程措施+本土适生植物相结合的措施进行防护,在不影响边坡稳定性的前提下,长边坡下部可适当采用无防护措施,土壤抗冲抗蚀性相对更好,工程措施倾向拱形骨架措施.