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Hydraulic Conductivity of Dredged Silt-attapulgite Vertical Cutoff Wall
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Long-jin JIAO1, Hao-qing XU2, *, Peng GE3, Peng-ming JIANG4, Ai-zhao ZHOU2, Jing-rui LIANG2
Science Technology and Engineering | 2025, 25(20) : 8641 - 8650
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Science Technology and Engineering | 2025, 25(20): 8641-8650
• Papers·Architectural Science •
Hydraulic Conductivity of Dredged Silt-attapulgite Vertical Cutoff Wall
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Long-jin JIAO1, Hao-qing XU2, *, Peng GE3, Peng-ming JIANG4, Ai-zhao ZHOU2, Jing-rui LIANG2
Affiliations
  • 1 Ecological Environment Restoration Center, the Third Geological Group, Jiangsu Bureau of Geology and Mineral Resources, Zhenjiang 212021, China
  • 2 Jiangsu Research Center of Geological Environmental Disaster Prevention and Restoration Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, China
  • 3 Jiangsu Geological Foundation Pile Engineering Company, Zhenjiang 212021, China
  • 4 School of Civil Engineering, Suzhou University of Science and Technology, Suzhou 215011, China
Published: 2025-07-18 doi: 10.12404/j.issn.1671-1815.2405548
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A large amount of dredged silt is produced in Taihu Lake every year. In order to realize the resource utilization of solid waste, the feasibility of preparing dredged mud and attapulgite into vertical cutoff wall material was explored, and its impermeability was studied. The permeability resistance and micro-pore structure of dredged mud-attapulgite engineering cutoff wall materials were studied by flexible wall infiltration, water centrifugation and low field nuclear magnetic resonance test. The results show that with the increase of consolidation pressure, the proportion of small holes increases, the proportion of mesoporous holes decreases, the content of free water decreases, and the content of bound water is basically unchanged, and the porosity and hydraulic conductivity of dredged silt-attapulgite decrease gradually with the increase of consolidation pressure. At the consolidation pressure of 100 kPa, the porosity and hydraulic conductivity of the dredging silt-attapulgite cutoff wall material using zinc chloride and butyric acid as the contaminated permeate increase compared with the test using water as the permeate. The reason is that the addition of the polluted permeate reduces the small hole proportion, increases the mesoporous proportion, increases the free water content, and basically keeps the bound water content unchanged.

dredged silt-attapulgite  /  confining pressure  /  hydraulic conductivity  /  porosity  /  free water content
Long-jin JIAO, Hao-qing XU, Peng GE, Peng-ming JIANG, Ai-zhao ZHOU, Jing-rui LIANG. Hydraulic Conductivity of Dredged Silt-attapulgite Vertical Cutoff Wall[J]. Science Technology and Engineering, 2025 , 25 (20) : 8641 -8650 . DOI: 10.12404/j.issn.1671-1815.2405548
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Year 2025 volume 25 Issue 20
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Article Info
doi: 10.12404/j.issn.1671-1815.2405548
  • Receive Date：2024-07-23
  • Online Date：2026-05-13
  • Published：2025-07-18
Article Data
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History
  • Received：2024-07-23
  • Revised：2025-04-12
Funding
Affiliations
    1 Ecological Environment Restoration Center, the Third Geological Group, Jiangsu Bureau of Geology and Mineral Resources, Zhenjiang 212021, China
    2 Jiangsu Research Center of Geological Environmental Disaster Prevention and Restoration Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, China
    3 Jiangsu Geological Foundation Pile Engineering Company, Zhenjiang 212021, China
    4 School of Civil Engineering, Suzhou University of Science and Technology, Suzhou 215011, China
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表12种不同金属材料的力学参数
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小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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