泥沙研究2018，Vol.43Issue(1)：51-57,7.DOI:10.16239/j.cnki.0468-155x.2018.01.009
季节性冻融区解冻期土壤分离能力影响因素研究
Study on factors affecting soil detachment capacity of thawing period in the region of seasonal freeze-thaw
摘要
Abstract
The effect of hydrodynamic factors and freeze-thaw factors on soil detachment capacity,and the processes of freeze-thaw and soil detachment are studied by using the least time and material resources combined with the method of Taguchi test simulation.Results of freeze-thaw and flume scour tests showed that soil detachment capacity increased with the increase of slope,flow rate,freeze-thaw cycles and initial soil water content,under the condition of freezing and thawing.Increasing range of soil detachment capacity decreased when the slope is greater than 10 degrees.Under the experimental conditions,the soil detachment capacity reached the maximum value when the level of the factors was the maximum.The contribution rate of various factors to soil detachment capacity were slope (76.02％) ＞ flow discharge (13.39％) ＞ soil moisture (6.92％) ＞ freeze-thaw cycles (3.67％).The relative error of the prediction of soil detachment capacity by Taguchi method is less than 20％.关键词
土壤侵蚀/冻融/田口方法/土壤分离能力Key words
soil erosion/freezing and thawing/soil detachment capacity/taguchi method分类
农业科技引用本文复制引用
孙宝洋,肖俊波,刘晨光,李占斌..季节性冻融区解冻期土壤分离能力影响因素研究[J].泥沙研究,2018,43(1):51-57,7.基金项目
国家自然科学基金重点项目(41330858) （41330858）
西北农林科技大学博士科研启动基金顶目(2452015345) （2452015345）
大学生创新创业训练计划项目(10712) （10712）
