矿山边坡坡度对降雨入渗与侵蚀过程影响试验
发布时间：2019-01-04 17:38
【摘要】：以河南省焦作市某矿山边坡为例,利用人工模拟降雨试验研究了矿山边坡坡度对降雨入渗及产流侵蚀过程的影响。试验结果表明:雨强对入渗过程有重要影响,雨强在120~180 mm/h变化时,平均入渗率随雨强增大而增大,并随时间逐渐减小;坡度为20°~45°范围内,随边坡坡度减小,平均入渗率呈增大趋势,压实度增大,土壤孔隙率减小,入渗能力减小;土壤侵蚀量与土壤侵蚀模数随降雨强度增大而增大,侵蚀模数在边坡35°处出现较大转折;随着边坡坡度增大,浸润锋入渗边坡的速率增大,坡度越大浸润锋向坡底发展的速率越大。
[Abstract]:Taking a mine slope in Jiaozuo City, Henan Province as an example, the effect of slope gradient on rainfall infiltration and runoff erosion process was studied by artificial simulated rainfall test. The results show that the rainfall intensity has an important effect on the infiltration process. When the rainfall intensity changes at 120 ~ 180 mm/h, the average infiltration rate increases with the increase of rain intensity, and decreases gradually with time. In the range of 20 掳~ 45 掳, the average infiltration rate increases, compactness increases, soil porosity decreases and infiltration capacity decreases with slope gradient decreasing. Soil erosion and soil erosion modulus increased with the increase of rainfall intensity, and the erosion modulus changed at 35 掳of slope. With the slope gradient increasing, the infiltration front infiltration rate of the slope increases, and the more the slope degree increases, the more the infiltration front develops to the bottom of the slope.
【作者单位】： 黄淮学院建筑工程学院;中国地质大学工程学院;
【基金】：国家自然科学基金资助项目(41272377) 河南省科技厅科技攻关计划项目(122102310477)
【分类号】：S157.1
本文编号：2400586
[Abstract]:Taking a mine slope in Jiaozuo City, Henan Province as an example, the effect of slope gradient on rainfall infiltration and runoff erosion process was studied by artificial simulated rainfall test. The results show that the rainfall intensity has an important effect on the infiltration process. When the rainfall intensity changes at 120 ~ 180 mm/h, the average infiltration rate increases with the increase of rain intensity, and decreases gradually with time. In the range of 20 掳~ 45 掳, the average infiltration rate increases, compactness increases, soil porosity decreases and infiltration capacity decreases with slope gradient decreasing. Soil erosion and soil erosion modulus increased with the increase of rainfall intensity, and the erosion modulus changed at 35 掳of slope. With the slope gradient increasing, the infiltration front infiltration rate of the slope increases, and the more the slope degree increases, the more the infiltration front develops to the bottom of the slope.
【作者单位】： 黄淮学院建筑工程学院;中国地质大学工程学院;
【基金】：国家自然科学基金资助项目(41272377) 河南省科技厅科技攻关计划项目(122102310477)
【分类号】：S157.1
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