Results 11 to 20 of about 653 (150)
Effects of Breccias and Round Gravels on Steep Cut Slope Runoff and Sediment Yield Under Simulated Rainfall [PDF]
, 2023 [Objective] The effects of breccias and round gravels on steep cut slope infiltration, runoff, sediment yield, and hydrodynamic characteristics were analyzed in order to provide a theoretical basis for a soil erosion prediction model and soil ...
Cao Longxi +5 more
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Major Achievements and Future Key Fields of Soil Erosion Research in China [PDF]
, 2022 [Objective] The developing history of soil erosion research in China was reviewed, the major research achievements were summarized, and the current problems and key research fields in the future were analyzed to provide a reference for China's soil and ...
Cai Qiangguo, Ke Qihua, Zhang Keli
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水电水利, 2019 淤地坝是水土保持小流域治理的主要工程措施之一,其作用是抬高侵蚀基准面,控制沟道侵蚀,滞洪蓄水、拦泥淤地,对治理沟道水土流失、减轻下游河道泥沙淤积发挥着重要的作用。工程质量的好坏直接关系到该区域生态环境的好坏,其对于江河的治理、改善当地生态环境和确保人民生命财产的安全具有重要的意义。因为经济条件以及技术的限制,淤地坝坝体市场隐含着许多的风险。若不进行针对性的除险加固,则危害到一方民众的安居乐业。本文从淤地坝除险加固的必要性分析出发,对淤地坝除险加固工程初步设计进行了分析,并提出了相关的对策。
海龙 石
semanticscholar +1 more source
Shuitu Baochi Xuebao, 2020 通过模拟室内风力、水力、冻融条件，进行单一水蚀、冻融+水蚀、冻融+风蚀+水蚀3种营力组合试验，揭示了复合侵蚀条件下的砒砂岩产流产沙变化规律。结果表明：（1）相同降雨条件下，冻融+水蚀、冻融+风蚀+水蚀试验的径流量均为水蚀试验的1.2倍，产沙量分别为水蚀试验的2.4，2.8倍。冻融能够增大砒砂岩产流产沙量，风蚀对增加侵蚀产沙量的作用较小。（2）砒砂岩产流产沙过程的峰值及变幅随营力种类的增多而增大，单一水蚀的产流产沙过程相较于复合营力作用下的水沙过程具有显著的坦化特征。（3）复合侵蚀作用使初始入渗率增加 ...
卫午毓 +4 more
doaj
Seeing from Above: Observation of Contemporary Dike-Pond Landsca pe
Landscape architecture frontiers, 2019 珠江三角洲(下文简称“珠三角”)的基塘系统是在当地多水易涝 的自然环境下,结合生产和生活需求而演化出的渔农复合生态系统。 数个世纪以来,随着越来越多低洼的河滩沙田被改造成可渔可耕的复合 生产用地,基塘的水土环境已经与当地聚落紧密结合在一起,形成了 基塘景观。除了自然环境与人工环境的协调共存带来的农业与生态效 益外,基塘景观的有机拼贴肌理也具有较高的景观价值(图1)。 然而,随着珠三角的快速发展,这里的基塘景观已逐渐被城市建 设活动包围、侵蚀(图2),为人们提出了一系列问题与挑战,例如 ...
M. Tian
semanticscholar +1 more source
Shuitu Baochi Xuebao, 2003 将侵蚀产沙模型和地理信息系统集成起来,充分利用GIS在数据管理、空间分析及可视化方面的功能,是今后侵蚀产沙模型发展的方向.本文在分析当前侵蚀产沙模型发展方向及存在的问题后,总结了地理信息系统在侵蚀产沙中的应用,阐述了地理信息系统与侵蚀产沙模型集成的发展历史,并对其3种结合方式进行了评述.
刘纪根 +3 more
doaj +2 more sources
Soil Erosion Process Under the Combined Action of Water and Gravity on Red Soil Slope [PDF]
[Objective] Soil erosion is one of the most important ecological and environmental problems in the world. It is of great significance to reveal the coupling mechanism of water and gravity combined erosion by analyzing the water and sediment process of ...
MA Lan +4 more
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Slope Aspect Differentiation of Pisha Sandstone Slide Erosion and Its Response to Meteorological Factors [PDF]
[Objective] As a typical mode of gravity erosion in the Pisha sandstone area, debris sliding has become a significant source of coarse sand material within gullies, seriously threatening the ecological security of the basin.
LI Long +4 more
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Shuitu Baochi Xuebao, 2022 侵蚀性降雨是引起喀斯特黄壤坡面水土流失的主要动力因子。采用贵州省遵义市浒洋水流域2018—2020年4个径流小区92次侵蚀性降雨产流产沙实测数据,研究次降雨条件下,裸露坡面和块石出露小区对产流产沙的影响。结果表明:(1)侵蚀性降雨可以分为A、B、C 3类,A类降雨是造成喀斯特黄壤坡面土壤侵蚀的主要雨型。侵蚀性降雨的标准为次降雨量＞6.6 mm或I30＞3.6 mm/h。(2)裸露坡面63.27%的侵蚀性降雨径流深＜0.4 mm,66.30%的侵蚀性降雨土壤流失量＜1 g/m2 ...
陈磊 +5 more
doaj
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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