植被覆盖度对坡面水流的影响分析

为分析植被覆盖度对坡面水流的影响,采用人工植被覆盖在有机玻璃水槽上模拟坡面水流,以水力学理论为依据,通过改变植被覆盖度讨论其对于坡面水流的影响。结果表明,整体上坡面流速随植被覆盖度的增加而减小,可将植被覆盖度设为10%~30%,以减小坡面流速;平均阻力系数及糙率随植被覆盖率的增加而增加。

Influence of Vegetation Coverage on Overland Flow

To analyze the impact of vegetation coverage on the slope surface flow, the artificial vegetation coverage on the organic glass flume was used to simulate slope flow. On the basis of hydraulics theory, the impact on the slope surface water flow was discussed through the change of vegetation coverage. The results show that the overall slope velocity decreases with the increase of vegetation coverage, the vegetation coverage can be set to 10% 30% to reduce the slope velocity, and the average drag coefficient and roughness increase with the increase of vegetation coverage.