煤矿安全2019，Vol.50Issue(4)：37-40,4.DOI:10.13347/j.cnki.mkaq.2019.04.009
采煤沉陷区地表水土流失时空演化研究
Temporal and Spatial Evolution of Surface Soil Erosion in Mining Subsidence Areas
摘要
Abstract
To study the temporal and spatial evolution of surface water and soil erosion on the slope surface of coal mining subsidence area, in this paper, indoor simulation experiments were conducted to study the characteristics of surface soil erosion on slopes under different rainfall intensity and slope conditions. Experimental studies show that the slope surface average velocity is directly proportional to the rainfall intensity. Under the same slope, with the increase of rainfall intensity, the average velocity of the slope increases. There is no obvious change rule of sediment concentration in the flow under weak rainfall; under the conditions of moderate and heavy rainfall, slope gradient has two stages of effect on the change of sediment concentration. In the first stage, as the gradient increases, the sediment concentration decreases, showing a negative effect. In the second stage, with the increase of slope, the sediment concentration increases nearly linearly, showing a positive correlation.关键词
相似模拟实验/塌陷坡度/降雨强度/水土流失/时空演化Key words
similar simulation experiment/collapse slope/rainfall intensity/water and soil erosion/space-time evolution分类
矿业与冶金引用本文复制引用
赵令,苏涛,李杰卫,周亮,樊宇..采煤沉陷区地表水土流失时空演化研究[J].煤矿安全,2019,50(4):37-40,4.基金项目
湖北省教育厅科学技术研究资助项目(B2018182) （B2018182）
