Results 1 to 10 of about 381 (133)
Shuitu Baochi Xuebao, 2016 通过不同流量（35，45，55 L/min）、不同坡度（24°，28°，32°）的野外放水冲刷试验，对工程堆积体坡面产流产沙的时空变化特性进行了研究。结果表明，径流强度与放水强度、产沙率密切相关，三者之间呈多元线性相关；坡面径流强度随冲刷时间呈波动式增大趋势；平均含沙量和产沙比均随坡度增大呈先增后减的趋势，峰值出现在坡度为28°时；径流强度和产沙率在冲刷时间为10 min出现第一个峰值；坡面产沙过程呈现产沙率剧增、波动和稳定发展3个阶段；累计产沙量与累计径流量呈线性关系 ...
张, 杜
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A Study on Pore Structure and Erosion Resistance of Soil Column Based on CT Scanning Technology [PDF]
, 2023 [Objective] The relationship between soil column pore structure and soil erosion resistance for soil columns with Bahiagrass was analyzed in order to provide a scientific basis for the optimal arrangement of plants for soil and water conservation and to ...
Cao Longxi +4 more
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Characteristics of Erosive Rainfall and Its Effects on Runoff and Sediment Yield in a Low Mountain and Hilly Area of Lianyungang City [PDF]
, 2022 [Objective] The effects of different rainfall characteristics and different underlying surface conditions on soil erosion and sediment yield were determined in a low mountain and hilly area of Lianyungang City, Jiangsu Province, in order to provide a ...
Cheng Jianmin +3 more
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Erosion Characteristics and Its Simulation of Erosion Amount for an Artificial Forest in an Exposed Feldspathic Sandstone Area [PDF]
, 2022 [Objective] The rainfall characteristics and water and sediment control ability of different types of artificial forestland in an exposed feldspathic sandstone area were determined in order to provide guidance for vegetation construction in the study ...
Dong Xiaoyu, Qin Fucang, Yang Zhenqi
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Shuitu Baochi Xuebao, 2021 为揭示春季解冻期工程堆积体土壤侵蚀过程机理，以辽西地区的开挖河道工程堆积体为研究对象，采用室内模拟放水冲刷试验对春季解冻期褐土工程堆积体坡面侵蚀过程进行研究。结果表明：各解冻坡面径流量随着放水冲刷量的增加而增加，并且在相同放水冲刷量下，坡面径流量整体呈现未解冻坡面>解冻2 h坡面>解冻4 h坡面>对照；解冻时间越长，坡面对径流的延迟作用越明显；解冻时间越长，坡面侵蚀越严重。在相同放水冲刷量下，堆积体坡面总产沙量整体呈现解冻4 h坡面>解冻2 h坡面>未解冻坡面>对照。相较于对照 ...
姜倩, 李坤衡, 李宏伟, 吕刚
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Zhejiang Daxue xuebao. Lixue ban, 2013 2008年底曹娥江河口大闸建成并开始试运行，大闸的兴建阻挡了钱塘江潮流的上朔.平时大闸关闸挡潮，阻挡外海泥沙进入上游江道；洪水期开闸放水，逐步带出建闸前淤积在河床上的泥沙.闸上江道的冲淤特性由建闸前的“洪冲枯淤”转变为建闸后的“单向冲刷”，泥沙运动规律的改变将会加剧水流对两岸防洪堤的冲刷，也会对沿江涉水工程（如跨江大桥）的安全造成不同程度的影响.应用二维动床泥沙数学模型，考虑曹娥江大闸调度原则，并按水文年（1962~2005年）重演方式，对建闸后闸上江道冲淤演变情况进行了长系列反演计算 ...
FULi-hui(傅利辉) +3 more
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Shuitu Baochi Xuebao, 2021 为明确三峡库区消落带草被对农业面源污染防治的作用，采用野外放水冲刷试验，分析草带对地表径流中氮磷的拦截率和冲刷前后氮磷含量在土壤内的空间变化，研究消落带典型草被对氮磷污染物迁移的影响。结果表明：（1）草带拦截污染物的效率总体较好，对NO3--N的拦截率最高，达93.5%~99.3%。拦截率与草带宽度成正比，与冲刷强度成反比。（2）冲刷前后TN、TP、NO3--N和NH4+-N污染物含量的变化率最大值分别为2.30，1.96，5.01，4.75，均出现在小区下坡。随着草带宽度增加以及冲刷强度的减弱 ...
郭振勇 +4 more
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Research on sediment reduction benefits of engineering measures on waste rock slope under different rainfall intensities [PDF]
The dump slope of open-pit coal mines is characterized by steep gradients, loose structure, and poor stability, leading to severe soil erosion under heavy rainfall.
Gang LYU +3 more
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Shuitu Baochi Xuebao, 2002 通过不同坡度、不同流量的组合放水冲刷试验 ,对坡面细沟侵蚀发生过程中的坡面流水动力学特性进行了研究。结果表明 ,在试验的坡度和流量范围内 ,坡面流的雷诺数变化于 36 2～ 4 2 84之间 ,并且其变化有随冲刷历时和流量的增大而增大的趋势。而坡面流弗劳德数在整个试验过程中均大于 1,属于急流范围。坡面流阻力系数的大小与水流雷诺数有关 ,但其变化趋势受坡度的影响。在坡度较缓时 ,阻力系数随雷诺数的增大而减小 ;在坡度较大时 ,阻力系数随雷诺数的增大而增大。在径流冲刷侵蚀过程中 ,径流流速并非一恒定值 ...
丁文峰 李占斌 等
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Response of Runoff and Sediment Yield from Maize Slope Farmland in Karst Areas to Slope Gradient [PDF]
[Objective] To elucidate the responses of surface runoff, subsurface runoff, and underground runoff hydrological pathways to slope in maize sloping farmland in Karst regions.
DAI Quanhou +4 more
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