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根据铁路工程边坡水力侵蚀试验结果以及坡面土壤入渗理论及水流波动理论进行铁路工程边坡的入渗分析及坡面流分析,提出铁路工程土质边坡的次降雨侵蚀入渗产流模拟方程。为预测及控制铁路工程边坡坡面水土流失问题,针对降雨强度、渗透系数、土壤吸力、压实度、含水率、糙率系数、坡度等对铁路工程边坡产流初始时刻、产流量的影响规律进行了计算分析。结果表明,渗透系数对产流时间和产流量影响较大,长时间降雨时,坡长对路堑产流量影响大;短时间强降雨时,糙率系数变大和坡度减小是降低路堑边坡产流量的主要因素。
Based on the results of hydraulic erosion test of railway slope, soil infiltration theory of slope surface and theory of flow fluctuation, the infiltration analysis and slope flow analysis of railway slope are put forward, and the simulation of subgrade rainfall infiltration and runoff on soil slope equation. In order to predict and control soil erosion on slope surface of railway engineering, the effects of rainfall intensity, permeability coefficient, soil suction, compaction, water cut, roughness coefficient and slope on the initial runoff yield, Impact laws were calculated and analyzed. The results show that the permeability coefficient has a great influence on the runoff time and runoff yield. When the rainfall is long, the slope length has a great influence on the runoff yield. When the rainfall intensity is short, the roughness coefficient becomes larger and the slope decreases, The main factor of traffic.