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本文结合工程实例,介绍了小流域的设计流量计算方法—径流形成法。这种方法对相关的勘测设计中的流量计算具有参考意义。 相似文献
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Runoff and water erosion on road side-slopes: Effects of rainfall characteristics and slope length 总被引:2,自引:0,他引:2
Xian-Li Xu Wen Liu Ya-Ping Kong Ke-Li Zhang Bofu Yu Ji-Ding Chen 《Transportation Research Part D: Transport and Environment》2009,14(7):497-501
To investigate the effects of rainfall and slope length on water erosion on road side-slopes, runoff and soil loss are measured from natural runoff plots along the Qinghai-Tibet highway near Tuotuo River. Rainfall erosivity used in the revised universal soil loss equation is a good predictor for runoff and soil loss from road side-slopes. Runoff depth, sediment concentration and soil loss decreases as slope length increases. 相似文献
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Runoff and soil erosion from highway construction spoil deposits: A rainfall simulation study 总被引:3,自引:0,他引:3
Jianzhi DongKeli Zhang Zhongling Guo 《Transportation Research Part D: Transport and Environment》2012,17(1):8-14
To measure soil loss from these road construction spoils, 30 rainfall simulations involving five rainfall intensities were conducted to study runoff and soil erosion processes on a road in China. Twenty-five of the rainfall simulations were carried out on loose materials five different slopes. Another five rainfall simulations were conducted on compacted road materials with a slope of 30.6%. The results show that soil bulk density has a positive effect on runoff rate, and the effect of slope on runoff rate changes with rainfall intensity. Higher soil bulk density increases soil loss under low rainfall intensity, but decreases soil loss when rainfall intensity is high. Soil loss is positively related to slope, but the relationship differs from that in prior studied of croplands and disturbed lands. Equations for predicting soil erosion from loose materials and compacted road are developed. 相似文献
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文章针对邵怀高速公路雪峰山特长深埋隧道排水设计及施工现状,通过众多方法比较分析,优选采用灰色理论来预测隧道开挖距离与涌水量问的关系,以预测隧道开挖后总的涌水量,为中心水沟管径大小设计提供依据,对指导隧道施工具有现实意义。 相似文献
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R. S. Farrow, with J. M. Broadus, T. A. Grigalunas, P. Hoagland III, and J. J. Opaluch. 1990. Managing the Outer Continental Shelf Lands: Oceans of Controversy. New York: Taylor & Francis New York, 168 pp., paper. Richard A. Kenchington. 1990. Managing Marine Environments. New York: Taylor & Francis, 248 pp. 相似文献
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