Results 1 to 10 of about 9,014 (169)
工程建设, 2023 尾矿库一旦垮坝会对下游居民的生命财产安全造成巨大的损失，因此尾矿库的安全管理尤为重要。大塔冲尾矿库现对其进行增容改造，增容后设计标高较原设计增加12米，为保证尾矿坝的安全稳定，对其稳定性进行研究。分析尾矿坝稳定性的有稳定分析法及有限元强度折减法，有限元强度折减法虽克服了极限平衡法将岩土体看作刚体的缺陷，但其忽略了尾矿坝在运行中岩土体的变异性和离散性。为更好地评价尾矿坝的稳定性，论文对坝体建立三维模型，采用有限元强度折减法进行分析其稳定性，又以遗传算法和空间变异理论为基础 ...
源 夏, 学良 王
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Spatial Distribution Characteristics of Soil Water and Salt in Newly Cultivated Farmland Under Gully Control in Loess Hilly Region [PDF]
, 2023 [Objective] Part of the newly cultivated farmland formed by the “Gully Control and Land Reclamation” project is facing the risk of soil salinization in the loess hilly region.
Jiao Feng +3 more
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Carbon, Nitrogen and Phosphorus nutrients and stoichiometric characteristics of reclaimed soil aggregate in coal mining subsidence land [PDF]
, 2022 In order to clarify the nutrients and stoichiometric changes of soil aggregates in different forest types, reveal the soil nutrient retention and limitation characteristics of coal mining subsidence land, and then screen out the best reclaimed-forest ...
Jing ZHAO +3 more
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3D micropore structure evolution of ore particles based on image processing [PDF]
, 2016 The micropore structure and evolution of copper oxide ore particles before and after acid leaching were investigated by high resolution X-ray micro-computed tomography(micro-CT) and three-dimensional(3D) image analysis. The pore structure parameters,such
MOU Xiu-xiu, WU Ai-xiang, YANG Bao-hua
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Nutrient Characteristics and Factors Influencing Surface Soil with Gully Erosion on Sloping Farmland for Low Hilly Terrain in Black Soil Area [PDF]
, 2023 [Objective] The soil nutrient characteristics and influencing factors of surface soil gully erosion for low hilly terrain in the black soil area were studied in order to provide data and theoretical support for the rational use of land resources ...
He Xuyang +7 more
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Shuitu Baochi Xuebao, 2020 通过泰森多边形加权变差系数法研究了黄河中游无定河流域黄土区降水和侵蚀产沙的空间变异规律，并用线性回归分析探究两者空间变异性的相关性。以黄河主要泥沙来源区之-的无定河流域为例，分析了该流域黄土区1959—2015年水土保持措施综合治理前后降水和侵蚀产沙的时空变异规律，所选用的降水特征为汛期降水（Pflood）和汛期降雨侵蚀力（Rflood），用产沙模数（SSY）表示该流域产沙量的多少。结果表明：（1）在水土流失治理前（1959—1970年），该地区降水特征与产沙模数在时间上的增减变化趋势-致 ...
张萍, 郑明国, 蔡强国, 马小晴
doaj
Shuitu Baochi Xuebao, 2007 以毛乌素沙地丘间低地不同年龄(2~4年)沙柳为研究对象,采用地统计学方法对各年龄沙柳表层(0~20cm)土壤水分与容重空间变异进行研究。结果表明:随着年龄的增长,表层土壤水分含量表现出增大的趋势,且各年龄沙柳表层土壤水分含量间表现出一定的差异性(P0.05)。
姚月锋, 蔡体久
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Probabilistic inverse-analysis and reliability prediction of rainfall-induced landslides for slope with multi-source information [PDF]
Probabilistic inverse-analysis is an essential approach to infer statistical characteristics of uncertain soil parameters, making the slope reliability assessment closer to engineering reality.
Faming HUANG +4 more
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Shuitu Baochi Xuebao, 2005 采用地统计学的方法，研究了科尔沁沙地沙质草场土壤含水量对干旱和降雨响应的空间变异规律。结果表明，干旱时沙质草场表层(0～20cm)、亚表层(20～40cm)土壤含水量可很好地拟合成球状模型和指数模型，在1～2．26m，1～6．63m的中等尺度范围内表现出很高的空间自相关性，空间自相关度分别为0．92，0．87．分维数均表现出较弱的空间依赖性．分别为1．99，1．94，两层土壤含水量变异特征差异小，土壤水分的空间变异性强，破碎化程度高。降雨后沙质草场土壤表层 ...
左小安 赵学勇 赵哈林 李玉霖 移小勇 黄刚
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Test method for studying spatial variability of landslide dam materials [PDF]
Landslide dams exhibit typical spatial variation characteristics, with disordered composition, significant particle sorting, and complex spatial structures, making them prone to dam-break flood disasters under the scouring action of water flow.
GUO Wanli1 , CAI Zhengyin1, JIAN Fuxian2, 3, 4
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