降雨強(qiáng)度和坡度對(duì)黑土區(qū)土質(zhì)道路路面侵蝕特征的影響
[Abstract]:Three kinds of representative erosive rainfall (60 ~ 90120mm / h) and three typical slopes (3 擄, 5 擄and 7 擄) in the black soil region of Northeast China were selected, and simulated rainfall test method was used to study the road surface runoff in the black soil area under different rainfall intensity and slope. The characteristics of erosion amount and the process of runoff and sediment yield. The results showed that the runoff of different rainfall intensity and slope was mainly changed from 56.3 mm to 61.8 mm. However, with the increase of rainfall intensity and slope, the pavement erosion rate increases by 1.8% 11.0 times and 1.2% 10.0 times respectively, and the two factors promote each other and affect the soil erosion of soil road surface. In addition, the effect of rainfall intensity on the course of runoff yield of soil road in black soil area is obvious, but the influence of slope is small. With the increase of rainfall intensity and slope, the sediment content increases obviously, and the fluctuation range increases gradually. It can be seen that rainfall intensity and slope have a significant impact on road erosion in black soil area, which can be prevented by reducing the kinetic energy of raindrops and changing the nature of road surface.
【作者單位】: 吉林農(nóng)業(yè)大學(xué)資源與環(huán)境學(xué)院吉林省商品糧基地土壤資源可持續(xù)利用重點(diǎn)實(shí)驗(yàn)室;水利部松遼水利委員會(huì);
【基金】:國(guó)家自然科學(xué)基金項(xiàng)目(41601281) 國(guó)家水體污染控制與治理科技重大專項(xiàng)(2014ZX07201011) 水土保持業(yè)務(wù)—松遼流域全國(guó)水土流失動(dòng)態(tài)監(jiān)測(cè)與公告項(xiàng)目(126205012000150001) 吉林農(nóng)業(yè)大學(xué)博士啟動(dòng)基金項(xiàng)目(201636)
【分類號(hào)】:S157.1
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