文章摘要
黄旭华,陈 铮.红壤坡面侵蚀发生的临界条件[J].江西水利科技,2020,(1):
红壤坡面侵蚀发生的临界条件
The critical conditions of erosion occur in red soil slope
  
DOI:
中文关键词: 侵蚀  径流能耗  产沙强度  临界径流能耗
英文关键词: Erosion  Runoff energy consumption  Sediment yield intensity  Critical runoff energy consumption
基金项目:
作者单位
黄旭华 江西省水利科学研究院 
陈 铮 江西省水利科学研究院 
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中文摘要:
      采用可移动式降雨侵蚀槽进行放水冲刷试验,研究了红壤坡面侵蚀产沙强度与坡面径流能耗的关系,并分析得到土壤侵蚀发生的临界平均径流能耗值.研究结果表明:运用能量守恒原理得出坡面径流能耗,在4种不同坡度条件下,径流能耗越大,坡面产沙强度也越大;在径流能耗相同的情况下,坡度越大,产沙强度越大;建立坡面产沙强度(Dr)与径流能耗(△E)之间的关系,两者存在良好的线性关系:Dr=2.842 5△E-15.172,可用此进行坡面产沙强度的估算;土壤侵蚀发生存在有一定的临界径流能耗,在试验研究的范围内,可得到红壤坡面侵蚀发生临界平均径流能耗为5.34J/min.
英文摘要:
      The relationship between sediment yield intensity of red soil slope erosion and runoff energy consumption was studied by using mobile rainfall erosion tank for flushing test,and the critical average runoff energy consumption of soil erosion was obtained.The results show that the slope runoff energy consumption is obtained by using the principle of energy conservation.With the same runoff energy consumption,the greater the slope,the greater the sediment yield intensity.Establish the relationship between slope sediment yield intensity(Dr)and runoff energy consumption(△E),which has a good linear relationship:Dr=6.3573△E-55.339,which can be used to estimate slope sediment yield intensity;soil erosion has a certain critical runoff energy consumption.Within the scope of the experimental study,it can be obtained that the critical average runoff energy consumption of red soil slope erosion is 8.7J/min.
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