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Seepage characteristics of accumulation landslides under different types of heavy rainfall stability analysis [PDF]
Heavy rainfall is a major causes of sedimentary landslide disasters, and understanding the spatiotemporal dynamic characteristics of the seepage field in landslides under heavy rain is crucial for evaluating landslide stability and providing ...
Hao SHI +5 more
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Shuitu Baochi Xuebao, 2011 弃土场是开发建设项目中最重要的水土流失来源之一。以辽宁省沈阳市某电厂剥离表土临时堆土为对象,研究棕壤地区开发建项目设弃土的流失规律。试验在沈阳农业大学水利学院综合试验基地的人工模拟降雨试验大厅内进行,共设5个雨强、5个坡度,雨强分别为0.38,0.64,1.05,1.24,1.50 mm/min,坡度分别设定为20°,25°,30°,35°,40°。研究结果表明,相同条件下,雨强越大坡面产流时间越短,坡面土壤水分入渗率随雨强的增加而增加,且雨强越大坡面初始入渗率越高;径流量随雨强的增加而增加 ...
苏芳莉 +4 more
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Analysis of geological hazards caused by the “23 • 7” heavy rainfall in the northern section of Taihang Mountain in Hebei Province [PDF]
Heavy rainfall is the main factor triggering geological disasters. In the northern region of China, most of the researches focus on the geologic disasters caused by short-term heavy rainfall, and the researches on the characteristics of geologic ...
Fuji GU +6 more
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The Effectiveness and Feasibility Analysis of Low Impact Development Stormwater Management in Xiamen Island [PDF]
, 2009 传统的以末端治理为主的雨洪管理措施已不能满足城市健康发展的需要，城市发展需要具有可持续性的雨洪管理策略。低影响开发雨洪管理(LID)通过模拟场地开发前的水文状况，采用分散、多样、小型、本地化的技术从源头上截流、储存、渗滤以及蒸发雨水，最大程度保护开发改造地区的水文情势，减少负面环境影响。学习借鉴这种新策略，对改善我国城市新区开发和旧城改造的雨水资源利用与管理是十分有意义的。 本研究融合多学科知识，对某处植草砖铺设停车场和某半密集型绿色屋顶的雨洪处理能力进行野外监测 ...
刘保莉
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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, 2018 通过人工模拟降雨试验，探索表土剥离对喀斯特坡耕地侵蚀产沙的影响。采用钢槽装填土石模拟喀斯特坡地的“二元结构”。通过正交试验分析了下垫面类型（坡耕地、裸坡地）、雨强(0.5，0.8，1.3 mm/min)和地下孔(裂)隙度(1%，2%，3%，4%，5%)对坡地地下产流、产沙的影响。结果表明：表土剥离导致下垫面土壤物理性质改变，是影响坡地产流、产沙特征变化的主要因素。降雨强度主要影响坡地地下产流量和产沙量，地下孔(裂)隙度主要影响径流和泥沙在地表和地下的分配比例 ...
严友进, 杨
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Shuitu Baochi Xuebao, 2019 探索短历时强降雨对典型喀斯特坡耕地侵蚀产沙的影响，为喀斯特区坡耕地应对极端天气的水土流失防治提供理论依据。研究采用人工室内模拟降雨试验的方法，对喀斯特坡耕地侵蚀产沙特征在短历时强降雨作用下的影响因素开展研究。结果表明：（1）短历时强降雨导致喀斯特坡耕地地表输沙模数和产沙量随降雨强度的增大而增大，而地下输沙模数和产沙量与降雨强度无明显变化规律，坡耕地土壤侵蚀以地表为主。地表产沙临界雨强为30~50 mm/h。（2）坡度增大时地表产沙比重大于地下产沙比重，地表土壤侵蚀以地表为主 ...
任青青 +6 more
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Dianci bileiqi, 2021 随着全球气候变暖,特大暴雨、雾霾、暴雪等极端天气频发,其中暴雨天气已成为电力设备安全运行的严重隐患之一。空心复合绝缘子已被广泛应用于各种电力设备中,但对于强降雨条件下空心复合绝缘子的冲击闪络特性缺乏系统的研究。以额定电压220 kV空心复合绝缘子为试品,进行了强降雨条件下空心复合绝缘子的冲击放电电压试验,研究结果表明:强降雨条件下,降雨强度对于空心复合绝缘子的50%雷电冲击闪络电压影响不大,而50%操作冲击闪络电压随着降雨强度的增大而减小,符合负幂指数关系;雨水电导率的增加对50 ...
刘蕾 +5 more
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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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Shuitu Baochi Xuebao, 2019 采用室内人工模拟降雨技术，研究短历时暴雨和坡度对裸露铁尾矿砂坡面产流产沙的影响。结果表明：（1）不同降雨强度条件下，不同坡度间的坡面径流量、产沙量及径流泥沙含量均呈现随着降雨历时的增加而增加的动态变化趋势，不同的是径流量在15~24 min后逐渐趋于稳定。（2）不同降雨强度条件下，裸露铁尾矿砂坡面径流量及产沙量与坡度相关关系均存在临界降雨强度，该临界降雨强度约为90 mm/h。（3）不同降雨强度条件下，不同坡度间的产沙量及径流泥沙含量随着降雨强度的增加，二者与坡度的关系均由负相关逐渐转变为正相关。（4 ...
郭星星 +4 more
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