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研究狗牙根护坡实施处理方式对堤坝水土流失过程的影响,对于科学指导堤坝生物护坡与控制水土流失具有重要的意义。采用人工模拟降雨方法,对淮河大堤狗牙根护坡成坪处理、栽植处理、茎植处理和种植处理4种不同实施处理方式的径流、泥沙在不同降雨条件下的水土流失特征进行研究。结果表明:不同实施处理方式下的堤坝径流和泥沙流失差异明显;不同降雨强度条件下,栽植处理产流量小,但产沙量明显高于茎植处理和成坪处理,茎植处理产流量大,产沙量小,具有减沙不减流的特点,种植处理产流产沙量大,且随着降雨强度的增强而明显增大。研究结果可为选择狗牙根堤坝护坡实施处理方式提供参考。
It is of great significance to study the biological slope revetment and control soil and water loss of dams by studying the effect of treatment methods on the soil and water loss of dams. Using simulated rainfall, the runoff and sediment characteristics of runoff and sediment under different rainfall conditions were studied on the basis of bedding, planting, stem-planting and planting treatments of bermudagrass slope protection in the Huaihe River embankment. The results showed that there were significant differences in runoff and sediment loss under different treatments. Under different rainfall intensities, the flow rate of planting was lower but the sediment yield was significantly higher than that of stems and shoots. The flow rate of stems Large, small amount of sediment yield, with the characteristics of reducing sediment flow does not reduce the flow of sediment production and processing large, and with the rainfall intensity increased significantly increased. The results can provide a reference for choosing the treatment method of bermudagrass embankment slope protection.