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PAN Yi, LI Chuanxun. Large-strain nonlinear consolidation of dredged sludge yards with PHDs[J]. Chinese Journal of Geotechnical Engineering, 2024, 46(11): 2295-2304. DOI: 10.11779/CJGE20230290
Citation: PAN Yi, LI Chuanxun. Large-strain nonlinear consolidation of dredged sludge yards with PHDs[J]. Chinese Journal of Geotechnical Engineering, 2024, 46(11): 2295-2304. DOI: 10.11779/CJGE20230290

Large-strain nonlinear consolidation of dredged sludge yards with PHDs

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  • Received Date: April 03, 2023
  • Engineering practices and indoor model tests indicate that laying prefabricated horizontal drains (PHDs) can effectively accelerate the consolidation of dredged sludge yards. However, the large-strain self-weighted consolidation theory of dredged sludge yards with PHDs, in which the characteristics of dredged sludge can be fully considered, lacks systematic researches. In this study, based on the Gibson's large-strain consolidation theory and considering the nonlinear compressibility and permeability of dredged sludge, a large-strain nonlinear consolidation model for PHD-treated sludge yards with planar seepage and vertical strain is established, and the solution for this model is obtained by the finite difference method. The reliability of the large-strain nonlinear consolidation model and its solution for the PHD-treated sludge yards is verified by comparing with that for the large-strain self-weighted consolidation of dredged sludge yards without PHDs. On this basis, the influences of different factors on large-strain consolidation behaviors of dredged sludge yards are investigated. The results show that: (1) The consolidation rate can be achieved at the same level as the fully permeable boundary at the bottom once the rate of laying PHDs reaches a certain value, and the optimal rate of laying PHDs decreases with the increase of the stacking height of dredged sludge yards. (2) The optimal rates of laying PHDs are 50% and 27% for stacking heights of 1 and 5 m, respectively. (3) The stacking height has a great influence on the consolidation rate of yards treated with PHDs, and the consolidation rate of yards can be accelerated by increasing the number of PHD layers. (4) The consolidation rate increases with the increase of the permeability index when the compression index keeps fixed. (5) The consolidation rate decreases with the increase of the compression index when the permeability index remains constant.
  • [1]
    吴思麟, 朱伟, 刘既明, 等. 环保疏浚泥处理工程泥性质变化规律及问题分析[J]. 岩土工程学报, 2019, 41(12): 2290-2296. doi: 10.11779/CJGE201912014

    WU Silin, ZHU Wei, LIU Jiming, et al. Change laws of mud property and problems in typical environmental dredging treatment projects[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(12): 2290-2296. (in Chinese) doi: 10.11779/CJGE201912014
    [2]
    杨媛媛, 胡黎明, ANGE N, 等. 疏浚污泥资源化处理试验研究[J]. 岩土力学, 2009, 30(5): 1323-1327. doi: 10.3969/j.issn.1000-7598.2009.05.023

    YANG Yuanyuan, HU Liming, ANGE N, et al. Laboratory tests on valorization technique of dredged sediment[J]. Rock and Soil Mechanics, 2009, 30(5): 1323-1327. (in Chinese) doi: 10.3969/j.issn.1000-7598.2009.05.023
    [3]
    TANG P P, ZHANG W L, CHEN Y H, et al. Stabilization/solidification and recycling of sediment from Taihu Lake in China: engineering behavior and environmental impact[J]. Waste Management, 2020, 116: 1-8. doi: 10.1016/j.wasman.2020.07.040
    [4]
    RAKSHITH S, SINGH D N. Utilization of dredged sediments: contemporary issues[J]. Journal of Waterway, Port, Coastal, and Ocean Engineering, 2017, 143(3): 04016025. doi: 10.1061/(ASCE)WW.1943-5460.0000376
    [5]
    高扬, 孙科, 谭一军, 等. 多种疏浚淤泥脱水技术的典型应用及分析[J]. 江苏水利, 2020(9): 51-54.

    GAO Yang, SUN Ke, TAN Yijun, et al. Typical application and analysis of various dredged silt dehydration technology[J]. Jiangsu Water Resources, 2020(9): 51-54. (in Chinese)
    [6]
    吴思麟, 朱伟, 闵凡路, 等. 泥浆真空抽滤泥水分离中堵塞机理及规律性研究[J]. 岩土工程学报, 2017, 39(8): 1530-1537. doi: 10.11779/CJGE201708022

    WU Silin, ZHU Wei, MIN Fanlu, et al. Clogging mechanism and effect of cake permeability in soil-water separation using vacuum filtration[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(8): 1530-1537. (in Chinese) doi: 10.11779/CJGE201708022
    [7]
    蔡袁强. 吹填淤泥真空预压固结机理与排水体防淤堵处理技术[J]. 岩土工程学报, 2021, 43(2): 201-225. doi: 10.11779/CJGE202102001

    CAI Yuanqiang. Consolidation mechanism of vacuum preloading for dredged slurry and anti-clogging method for drains[J]. Chinese Journal of Geotechnical Engineering, 2021, 43(2): 201-225. (in Chinese) doi: 10.11779/CJGE202102001
    [8]
    SHINSHA H, KUMAGAI T. Bulk compression of dredged soils by vacuum consolidation method using horizontal drains[J]. Geotechnical Engineering Journal of the SEAGS & AGSSEA, 2014, 45(3): 78-85.
    [9]
    王海燕, 张文彬, 刘凌云, 等. 水平排水板真空预压法处理吹填土现场试验研究[J]. 中国港湾建设, 2016, 36(12): 57-62. doi: 10.7640/zggwjs201612012

    WANG Haiyan, ZHANG Wenbin, LIU Lingyun, et al. Field experimental study on dredger fill flow mud improved by vacuum preloading method employing horizontal drains[J]. China Harbour Engineering, 2016, 36(12): 57-62. (in Chinese) doi: 10.7640/zggwjs201612012
    [10]
    周洋, 蒲诃夫, 李展毅, 等. 水平排水板-真空预压联合处理高含水率疏浚淤泥模型试验研究[J]. 岩石力学与工程学报, 2019, 38(增刊1): 3246-3251.

    ZHOU Yang, PU Hefu, LI Zhanyi, et al. Experimental investigations on treatment of dredged slurry by vacuum-assisted prefabricated horizontal drains[J]. Chinese Journal of Rock Mechanics and Engineering, 2019, 38(S1): 3246-3251. (in Chinese)
    [11]
    陈征, 张峰, 陈益峰, 等. 排水通道分布式布设下双层地基平面应变固结分析[J]. 工程力学, 2020, 37(1): 135-144.

    CHEN Zheng, ZHANG Feng, CHEN Yifeng, et al. Plane-strain consolidation analysis of double-layered ground with strip-shaped distributed drainage boundary[J]. Engineering Mechanics, 2020, 37(1): 135-144. (in Chinese)
    [12]
    CHAI J C, HORPIBULSUK S, SHEN S L, et al. Consolidation analysis of clayey deposits under vacuum pressure with horizontal drains[J]. Geotextiles and Geomembranes, 2014, 42(5): 437-444. doi: 10.1016/j.geotexmem.2014.07.001
    [13]
    CHAI J C, WANG J, DING W Q, et al. Method for calculating horizontal drain induced non-linear and large strain degree of consolidation[J]. Geotextiles and Geomembranes, 2022, 50(2): 231-237. doi: 10.1016/j.geotexmem.2021.09.008
    [14]
    李传勋, 仇超. 高压缩性软土一维非线性大应变固结解析解[J]. 岩石力学与工程学报, 2021, 40(11): 2344-2356.

    LI Chuanxun, QIU Chao. An analytical solution for one-dimensional nonlinear large-strain consolidation of soft clay with high compressibility[J]. Chinese Journal of Rock Mechanics and Engineering, 2021, 40(11): 2344-2356. (in Chinese)
    [15]
    LEE K, SILLS G C. The consolidation of a soil stratum, including self-weight effects and large strains[J]. International Journal for Numerical and Analytical Methods in Geomechanics, 1981, 5(4): 405-428. doi: 10.1002/nag.1610050406
    [16]
    蒲诃夫, 宋丁豹, 郑俊杰, 等. 饱和软土大变形非线性自重固结模型[J]. 岩土力学, 2019, 40(5): 1683-1692, 1703.

    PU Hefu, SONG Dingbao, ZHENG Junjie, et al. Non-linear self-weight consolidation model of saturated soft soil under large-strain condition[J]. Rock and Soil Mechanics, 2019, 40(5): 1683-1692, 1703. (in Chinese)
    [17]
    BUTTERFIELD R. A natural compression law for soils (an advance on e-log p')[J]. Géotechnique, 1979, 29(4): 469-480. doi: 10.1680/geot.1979.29.4.469
    [18]
    TILLER F M, KHATIB Z. The theory of sediment volumes of compressible, particulate structures[J]. Journal of Colloid and Interface Science, 1984, 100(1): 55-67. doi: 10.1016/0021-9797(84)90411-9
    [19]
    林政, 赵智君. 自重和真空负压下吹填淤泥固结性状分析[J]. 建筑结构, 2012, 42(8): 114-118, 123.

    LIN Zheng, ZHAO Zhijun. Analysis of consolidation characteristics of dredger soil under self-weight and vacuum pressure[J]. Building Structure, 2012, 42(8): 114-118, 123. (in Chinese)
    [20]
    曾玲玲, 洪振舜, 陈福全. 压缩过程中重塑黏土渗透系数的变化规律[J]. 岩土力学, 2012, 33(5): 1286-1292. doi: 10.3969/j.issn.1000-7598.2012.05.002

    ZENG Lingling, HONG Zhenshun, CHEN Fuquan. A law of change in permeability coefficient during compression of remolded clays[J]. Rock and Soil Mechanics, 2012, 33(5): 1286-1292. (in Chinese) doi: 10.3969/j.issn.1000-7598.2012.05.002
    [21]
    GIBSON R E, SCHIFFMAN R L, CARGILL K W. The theory of one-dimensional consolidation of saturated clays: Ⅱ Finite nonlinear consolidation of thick homogeneous layers[J]. Canadian Geotechnical Journal, 1981, 18(2): 280-293. doi: 10.1139/t81-030
    [22]
    闵涛, 张海燕, 周宏宇, 等. 二维变系数热传导方程初边值问题的交替方向隐格式[J]. 西安工业大学学报, 2007, 27(2): 199-204. doi: 10.3969/j.issn.1673-9965.2007.02.021

    MIN Tao, ZHANG Haiyan, ZHOU Hongyu, et al. Alternating direction implicit scheme of initial-boundary problem for two-dimension heat conduction equation with variable coefficients[J]. Journal of Xi'an Technological University, 2007, 27(2): 199-204. (in Chinese) doi: 10.3969/j.issn.1673-9965.2007.02.021
    [23]
    PU H F, SONG D B, FOX P J. Benchmark problem for large strain self-weight consolidation[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2018, 144(5): 1-3.
    [24]
    仇超, 李传勋, 李红军. 单级等速加载下高压缩性软土非线性大应变固结解析解[J]. 岩土力学, 2021, 42(8): 2195-2206.

    QIU Chao, LI Chuanxun, LI Hongjun. Analytical solutions for one-dimensional nonlinear large-strain consolidation of high compressible soil under a ramp loading[J]. Rock and Soil Mechanics, 2021, 42(8): 2195-2206. (in Chinese)
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