[1]Pan Jiapeng,Zhang Kecun,An Zhishan,et al.Comparative Analysis of the Effects of Compound Soil Based on Clay Sand Barrier on Soil Moisture Characteristics[J].Research of Soil and Water Conservation,2024,31(01):88-95.[doi:10.13869/j.cnki.rswc.2024.01.008]
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Comparative Analysis of the Effects of Compound Soil Based on Clay Sand Barrier on Soil Moisture Characteristics
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
31
Number of periods:
2024 01
Page number:
88-95
Column:
Public date:
2024-02-20
- Title:
- Comparative Analysis of the Effects of Compound Soil Based on Clay Sand Barrier on Soil Moisture Characteristics
- CLC:
- S152.7
- DOI:
- 10.13869/j.cnki.rswc.2024.01.008
- Abstract:
- [Objective] The effects of compound soil based on clay sand barrier on soil water characteristics under different compound mass ratios were studied in order to reveal its soil improvement benefits and provide the best compound ratio for the design of clay sand barrier in the future. [Methods] The samples were divided into blank group, control group and experimental group by experimental design, and the soil bulk density, water constant and soil water characteristic curve of the three groups were compared and analyzed. [Results](1)The soil bulk density of the experimental group decreased with the increase of the compound soil mass ratio(compounding ratio). Compared with the blank group, when the compound soil mass ratio was 5:1, it decreased to 1.45 g/cm3, while the control group decreased to 1.32 g/cm3.(2)The soil saturated water content of the sample in the experimental group increased significantly when the compound ratio exceeded a certain threshold. When the compound ratio was 2:1, it increased by 0.97% compared with the blank group. At the same time, its field water holding rate and wilting coefficient increased by 1.518% and 1.543%, respectively, compared with the blank group, and increased by more than 10% compared with the control group.(3)The Gardner model simulated the three groups of samples well, and the soil moisture content of the three groups decreased with the increase of soil water potential. When the soil water potential was constant, the increase of the compound ratio of the experimental group effectively increased the water content of the compound soil. In the soil water potential of 0.01～1.5 MPa, the different mass ratios of the compound soil increased by an average of 1.32%～1.72%. [Conclusion] The increase of the compound ratio of the compound soil based on the clay sand barrier can effectively improve the water holding capacity and water retention of the soil, and the available water content also significantly increases, which is obvious for soil improvement.
- References:
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Last Update:
2024-02-20