donga

The car slid into a donga at the side of the road .

汽车滑进了路旁边的深沟。

Fuzzy Synthetical Evaluation of Prevention and Drainage of Subgrade in Loess Donga

黄土沟壑区路基防排水模糊综合评价

Research on Subgrade Drainage Technology in Loess Donga

黄土沟壑区路基防排水技术研究

On the base of overland flow theory , by one-dimension kinetic wave model , the formula for overland flow is deduced , which includes configuration and land feature in loess donga .

根据坡面流理论，运用一维运动波模型，推导出了考虑黄土沟壑区地形地貌条件的坡面产流公式。

Based on the analysis of topography , geology , rain character and wreck cause of subgrade drainage , the paper gives commonly evaluation and fuzzy synthetically evaluation on design and construction of subgrade drainage in loess donga .

在深入分析黄土沟壑区地形、地质、降雨特征以及该区路基防排水病害成因的基础上，对路基防排水设计和施工进行了一般评价及模糊综合评价。