Analytical calculation of steady seepage in unsaturated layered soils [PDF]
The analytical calculations of unsaturated steady-state seepage in the widespread layered soils wewre relatively rare. Based on the Darcy seepage theorem and the continuity condition of soil layer interface, a mathematical model describing the steady ...
Dong QIAO, Nan WU, Peipei CHEN
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, 2019 Under the long-term impacts of influencing factors including water and soluble salts, the Site of Yarkhoto Ancient City which is a precious earthen heritage is subjected to irreversible deterioration.
Tarantino, Alessandro +2 more
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Analysis on factors controlling shallow failures of the cut slopes and its prevention by bio-engineering measures: A case study of the cut slopes along the highway from Shuangcheng to Dajiali [PDF]
Understanding the primary and secondary relations of influencing factors is crucial for predicting deformation and controlling collapse in cutting slopes. Using a cutting slope along the Shuangcheng to Dalijia expressway in Gansu Province as the research
Changgen YAN +4 more
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Experiment and modeling of soil-water characteristic curve of unsaturated residual soil [PDF]
, 2014 土-水特征曲线是指基质吸力与含水率或饱和度的关系曲线。土-水特征及其相关数学模型可用于非饱和土性质如渗透系数和抗剪强度模型的建立。通常,土-水特征曲线仅有脱湿曲线。笔者详细讨论了初始含水率、干密度、竖向应力及干湿循环对脱湿曲线的影响。采用滤纸法测试了厦门地区残积土的土-水特征曲线(SWCC)及滞回环。结果表明,初始含水率对SWCC影响较小,最优含水率干侧试样SWCC的进气值小,滞回环小;湿侧试样的进气值大,滞回环大;最优含水率试样的滞回环居中。初始干密度对SWCC有显著影响,低干密度试样SWCC进气值小,
陈东霞, 龚晓南
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Collapse characteristics and influencing factors of wind-blown sands in the southern margin of Mu Us Desert, Yulin, Shaanxi Province [PDF]
With the development of arid and semi-arid regions in China, the hazards posed by collapsible sands to engineering construction have become increasingly significant.
Bin LIU +4 more
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Influences of compaction and content of hydrophobic agent on breakthrough pressure of hydrophobic soil [PDF]
Water infiltration, migration, and phase change of temperature are the crucial causes of frost damage in soils in cold regions. Modifying the soils to impart hydrophobic properties can effectively enhance their water resistance, offering a new approach ...
LI Lu1, 2 , LIN Chengxin1, 2, CHAI Yuxuan1, 2, SHI Shuo1, WU Yongkang1 , LI Xu
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Collapsible properties of Q2 loess and its collapsible prediction model [PDF]
Long-term surface leakage caused by intermittent surface irrigation or project operation can lead to the humidification and settlement deformation of deep Q2 loess, compromising the safety of the structures.
Guanglin LI +4 more
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Finite strain elastoplastic constitutive model of saturated soil [PDF]
During the construction of urban underground engineering projects, soils are typically in a saturated state, and many underground engineering accidents are closely related to the large deformation behavior of saturated soils.
Tianci WENG, Yonglin XIONG, Zhe HAN
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水电科技作为我国重要的民生工程，水利施工项目建设对于提升社会经济效益和生态效益方面作用显著。因此大兴水利是一项利国利民的工程。土石方施工技术是水利工程建设的基础，施工技术的应用和管理非常关键。文章围绕土石方施工技术的主要特点，论述了水利工程建设过程中土石方施工技术的应用要点和具体的施工步骤，着重分析了土石方施工过程中需要采取的管理措施，希望能够保障水利工程项目的整体效益和施工质量，帮助企业获得更高的社会和经济效益。
怀欣 高, 炳强 丁
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Shuitu Baochi Xuebao, 2005 应用VanGenuchten提出的土壤水分特征曲线公式,推导出了沙漠风沙非饱和土壤水分特征曲线的分形模型。通过对古尔班通古特沙漠地9种不同土壤样本利用中子水分仪和负压计实测的水分特征曲线资料反求得到相应的分形维数,分析了分形维数与土壤质地之间的关系,结果表明随着土壤质地从流动风沙土、半固定风沙土到固定风沙土的变化,其分形维数呈逐渐增大。此外,基于土壤颗粒的重量与粒径分布求出了古尔班通古特沙漠地风沙土壤粒径的分形维数。通过对土壤水分特征曲线的分形维数与土壤粒径的分形维数的对比 ...
苏里坦 宋郁东 张展羽
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