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以典型风沙土为实验材料,通过风洞模拟实验探讨了风沙土水分含量对临界风蚀风速及风蚀强度的影响。研究结果表明:风沙土临界风蚀风速随含水率的增加呈线性增大;风蚀率(风蚀强度)随含水率的增加呈二次幂函数减少。综合的风沙土水分抗风蚀模型可以表达为E=A+B(V/M) ̄2其中,E为风蚀率;y为实际作用风速;M为土壤含水率。
The typical aeolian sandy soil is taken as the experimental material and the influence of moisture content of aeolian sandy soil on the wind speed and wind erosion intensity of critical wind erosion is discussed through the wind tunnel simulation experiment. The results show that the critical wind speed of aeolian sandy soil increases linearly with the increase of moisture content, and the wind erosion rate decreases with the increase of moisture content. The integrated aeolian wind erosion model can be expressed as E = A + B (V / M) ~ 2 where E is the wind erosion rate; y is the actual wind speed; and M is the soil moisture content.