Volume 37 Issue 1
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Chen Mohan, Luo Yunhai, Wang Xiaoyan, Zhang Xuan. Experimental Study on Water Infiltration Law of Loess Foundation[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2023, 37(1): 95-99. doi: 10.3969/j.issn.1007-2993.2023.01.017
Citation: Chen Mohan, Luo Yunhai, Wang Xiaoyan, Zhang Xuan. Experimental Study on Water Infiltration Law of Loess Foundation[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2023, 37(1): 95-99. doi: 10.3969/j.issn.1007-2993.2023.01.017
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Experimental Study on Water Infiltration Law of Loess Foundation

doi: 10.3969/j.issn.1007-2993.2023.01.017

  • Xi’an Engineering Investigation & Design Research Institute of China National Nonferrous Metals Industry Co., Ltd., Xi’an 710054, Shaanxi, China

  • Received Date: 2021-11-19
  • Rev Recd Date: 2022-07-04
  • Publish Date: 2023-02-08
    Abstract
  • The soaking of soil by water is the decisive condition for the collapse deformation of collapsible loess, so it is of great significance to study the water infiltration law of loess foundation to solve the engineering problems of collapsible loess. The study on the law of water infiltration of loess foundation has certain reference value for collapsible deformation mechanism, foundation treatment, waterproof measures and protection distance. Taking natural loess and compacted loess from Luochuan loess plateau of Shaanxi province as research objects, the microstructure of the loess was studied by scanning electron microscopy, and the permeability coefficient was determined by single-ring water injection test. Meanwhile, food grade brilliant blue aqueous solution was used as tracer of soil water transport, and the spatial distribution pattern of water infiltration was intuitively studied by excavation profile. The results show that the water begins to converge in the horizontal direction at a certain infiltration angle to a certain depth, and finally forms a falling funnel like precipitation. The overall infiltration profile is diamond shaped, and the infiltration angle increases with the decrease of the permeability coefficient.

     

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