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一、高速公路土壤侵蚀特点1.公路土壤侵蚀在实践分布上不平衡公路建设工程具有战线长、工艺复杂、建设周期长的特点,导致土壤侵蚀在实践分布上具有不均匀的特点。一般来说,公路建设期土壤侵蚀量大,运行期土壤侵蚀量小。在整个道路施工过程中,由于土地开挖导致的植被破坏,使表土的抗蚀能力减弱,进而加剧扰动面的土壤侵蚀;路基开挖填筑及沿线取土、弃土,使土壤在植物工程尚未形成前完全裸露,在有降水的条件下就会产生大量
First, the characteristics of highway soil erosion 1. Highway soil erosion imbalance in the distribution of practice Highway construction has a long front, complex technology, the construction of a long period of characteristics, resulting in the distribution of soil erosion in the non-uniform characteristics. In general, the amount of soil erosion during highway construction is large, and the amount of soil erosion during operation is small. During the construction of the whole road, the vegetation damage due to land excavation weakens the anti-erosion ability of topsoil and further aggravates the soil erosion on the disturbance surface. Not yet completely exposed before the formation of a large number of conditions in the precipitation