农业现代化研究2016，Vol.37Issue(5)：964-971,8.DOI:10.13872/j.1000-0275.2016.0090
海涂盐碱地工程边坡土壤抗冲刷性能试验研究
Experimental study on soil anti-scourability of the engineering slope of tidal marsh saline-alkali land
摘要
Abstract
The objective of this study was to identify the soil anti-scourability in the engineering slope of tidal marsh saline-alkali land. For this purpose, the relationships between unit sediment load (Rs) of silt soil slopes, its hydraulic characteristics, slope gradient, and runoff discharges were analyzed through the runoff scouring experiments under six different slope gradients and six different runoff discharges. The results showed that theRs presented a positive liner relationship with slope gradient and increased logarithmically with runoff discharges. Reynolds number (Re) had a positive liner relationship with the runoff discharge but did not have any obvious relationships with slope gradient. The stream average shear force (τ) and the stream power (ω) had positive liner relationships with the runoff discharge and slope gradient. TheRs increased logarithmically with the stream average shear force (τ) and the stream power (ω). Theω and τ were all good hydraulic indicators for the unit area sediment load under different slope gradients and runoff discharges. It was clearly indicated by the related coefifcient that the stream power (ω) was the best for predictingRs in runoff scouring experiments. The above results will provide scientiifc basis for the research progress in the model development of soil erosion in the engineering slope of tidal marsh saline-alkali land.关键词
坡度/流量/冲刷试验/土壤抗冲性/产沙率/水动力学参数/盐碱地Key words
slope gradient/runoff discharge/runoff scouring experiments/soil anti-scourability/unit sediment load/hydraulic characteristic/saline-alkali land分类
农业科技引用本文复制引用
陈倩,佘冬立,章二子,许文涛..海涂盐碱地工程边坡土壤抗冲刷性能试验研究[J].农业现代化研究,2016,37(5):964-971,8.基金项目
国家自然科学基金项目（51679062，41471180）；江苏省国土资源科技项目（KJXM2016003）。@@@@National Natural Science Foundation of China (51679062,41471180) （51679062,41471180）
Land and Resources Science and Technology Project of Jiangsu Province (KJXM2016003) （KJXM2016003）
