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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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Research on risk early warning for rainfall-induced shallow landslides in Guangdong Province based on a dynamic slope instability model [PDF]
In light of the accuracy and model construction challenges in county-level meteorological risk early warning for geo-hazards, and considering the prominent characteristics that these geo-hazards mainly occur on the shallow surface of residual slopes, the
Pingxin WEI +5 more
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Shuitu Baochi Xuebao, 2017 双环入渗仪是田间测量土壤入渗过程和饱和导水率最常用的经典方法，但入渗仪内外环尺寸均会影响其测定结果。设计7组不同内外径的双环入渗仪，在位于祁连山区的黑河上游平坦草地开展多次野外土壤入渗试验，对比分析双环入渗仪内外环尺寸对土壤入渗率和饱和导水率的影响。结果表明，双环入渗仪内径相同时，外径越大则稳定入渗率和饱和导水率越小；外径相同时，内径越小则稳定入渗率和饱和导水率越小。初始入渗率与双环入渗仪尺寸关系不显著，但稳定入渗率和饱和导水率与入渗仪缓冲指数呈显著负相关。综合考虑安装简便，用水条件 ...
阳 +5 more
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Controlling influence of the “perched water structure” on rainfall-induced landslide: A case study of the Yaogou landslide in Zhushan County, Hubei Province [PDF]
The Yaogou landslide, located in Zhushan County, Hubei Province, exhibits distinctive aquifer characteristics and varying permeability, leading to the retention of groundwater within the landslide after rainfall, forming confined water.
Lihua LI +3 more
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Shuitu Baochi Xuebao, 2017 以相邻田面为对照，利用双环入渗法对三峡库区紫色土坡耕地土质埂坎分层（地埂、坎腰和坎趾）的入渗特征进行研究。结果表明：（1）土质埂坎分层入渗与对照田面入渗均呈先陡降后趋于稳定的趋势，但达到稳定入渗的时间存在差异。地埂达到稳定入渗的时间最长（110 min），分别比坎腰、坎趾和田面达稳定入渗的时间长9%，82%，18%。从入渗性能看，土质埂坎各层均表现出初始入渗率＞平均入渗率＞稳定入渗率。平均入渗率与120 min累积入渗量表现为地埂＞坎腰＞田面＞坎趾，初始入渗率为坎腰＞地埂＞田面＞坎趾，稳定入渗率为田面 ...
黎娟娟, 李进林
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喀斯特高原石漠化区露石岩-土界面与非岩-土界面土壤入渗特性差异
Shuitu Baochi Xuebao, 2022 为揭示喀斯特石漠化区露石岩—土界面与非岩—土界面土壤渗透特性差异,通过环刀法探究岩—土界面与非岩—土界面土壤入渗特征及入渗模型适应性。结果表明:(1)岩—土界面0—10 cm土层和10—20 cm土层土壤容重大于非岩—土界面,土壤总孔隙度小于非岩—土界面。岩—土界面含水率和毛管孔隙度总体上大于非岩—土界面,非毛管孔隙度、黏粒和排水能力总体上小于非岩—土界面。(2)岩—土界面土壤的入渗能力总体上小于非岩—土界面,其初始入渗速率、平均入渗率、稳定入渗率小于非岩—土界面(平直形除外)。(3)3种形状岩 ...
许胜兵 +4 more
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Meso and micro pore structure test of Jingyang shallow loess [PDF]
Rainfall and irrigation are the most common driving forces of geological disasters in loess areas. Generally, the infiltration depth is shallow and mainly controlled by microchannels.
Hengfei SUN +5 more
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Shuitu Baochi Xuebao, 2008 通过微咸水入渗实验结果和入渗模型分析实验资料方法研究了碱土、盐土在微咸水入渗条件下土壤水盐运移特性。结果表明:当矿化度在一定范围,相同入渗时间内两种土壤的累积入渗量、湿润锋随入渗水矿化度的增加而增加;不同SAR的微咸水入渗对盐土、碱土入渗能力影响不大,特别是盐土。碱土的水分和盐分运移与入渗水矿化度均呈正相关关系,盐土则不然。
杨艳, 王全九
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Shuitu Baochi Xuebao, 2017 以宁夏中部旱区砂田土壤为研究对象，通过对不同砾石覆盖厚度条件下砂田土壤水分入渗过程进行研究，采用一维垂直定水头入渗法，选取砾石覆盖厚度为影响因子，设置5个覆盖厚度（0，6，9，12，15 cm），观测湿润锋运移和入渗量变化规律，比较各处理土壤入渗特征，利用模型拟合土壤入渗过程。结果表明，砾石覆盖提高了土壤水分入渗能力，土壤湿润锋运移距离和入渗量明显增加。与CK相比，砾石覆盖厚度为6，9，12，15 cm时的累积入渗量分别增加了4.3%，11.8%，12.8%和17.1%，平均入渗率增加了25.8%，38.
白一茹, 赵云鹏, 王幼奇, 张
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Shuitu Baochi Xuebao, 2020 为探究不同浑水含沙率对层状土入渗特性的影响，通过室内膜孔灌自由入渗试验，研究了以夹砂层位置为5~10 cm的层状土条件下清水和不同含沙率的浑水（2%，5%，7%，9%）入渗的累积入渗量、湿润锋运移规律以及湿润体内土壤含水量分布情况，分别建立了层状土不同含沙率浑水膜孔灌入渗量、湿润锋运移距离与入渗时间之间的关系；提出了基于清水入渗的不同浑水含沙率单位膜孔面积累积入渗量模型。结果表明：不同浑水含沙率累积入渗量变化趋势一致，但含沙率越大，累积入渗量越小，浑水减渗作用越明显，对应入渗系数越小，入渗指数越大 ...
白瑞, 费良军, 陈琳, 钟韵
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