公路建设中水土流失分析及对策建议

Analysis and Suggestions on Water and Soil Erosion of Highway Construction

以天津地区公路建设为例,分析了公路建设过程中水土流失主要受降雨、植被的减少、地形、土壤、人工因素等方面的影响。根据水土流失方程式对公路施工前后水土流失的情况进行了分析,结果显示公路建成一般需要2~3年,由于植被的恢复,水土流失可恢复到施工前的水平,并且随着植被的生长,道路沿线的水土流失会比施工期减轻。

Taken the highway construction in Tianjin as an example,the cause of soil erosion was analyzed.The main reasons are precipitation,decreasing of vegetation,topography and human activities etc.The amount of soil erosion before and after the construction was assessed according to soil erosion equation.The result shows that the soil and water loss remains the level before construction within 2~3 years after completion of the road due to vegetation recovery.The soil and water loss will keep on decreasing along with the vegetation recovery.