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循环抽注水作用下承压含水层砂土的变形特性

李亚杰, 王旭东, 王雅平, 常银生

李亚杰, 王旭东, 王雅平, 常银生. 循环抽注水作用下承压含水层砂土的变形特性[J]. 岩土工程学报, 2018, 40(10): 1943-1949. DOI: 10.11779/CJGE201810023
引用本文: 李亚杰, 王旭东, 王雅平, 常银生. 循环抽注水作用下承压含水层砂土的变形特性[J]. 岩土工程学报, 2018, 40(10): 1943-1949. DOI: 10.11779/CJGE201810023
LI Ya-jie, WANG Xu-dong, WANG Ya-ping, CHANG Yin-sheng. Deformation characteristics of sand in confined aquifer under cyclic pumping-recharging groundwater[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(10): 1943-1949. DOI: 10.11779/CJGE201810023
Citation: LI Ya-jie, WANG Xu-dong, WANG Ya-ping, CHANG Yin-sheng. Deformation characteristics of sand in confined aquifer under cyclic pumping-recharging groundwater[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(10): 1943-1949. DOI: 10.11779/CJGE201810023

循环抽注水作用下承压含水层砂土的变形特性  English Version

基金项目: 国家自然科学基金项目(41272303)
详细信息
    作者简介:

    李亚杰(1992- ),男,硕士研究生,主要从事土的力学性质方面的研究工作。E-mail: 15062281963@njtech.edu.cn。

    通讯作者:

    王旭东,E-mail:cewxd@njtech.edu.cn

  • 中图分类号: TU433

Deformation characteristics of sand in confined aquifer under cyclic pumping-recharging groundwater

  • 摘要: 为探讨人工回灌和地下水位季节性变化等因素对承压含水层砂土变形特性的影响,利用FlowTracⅡ增量固结试验系统,设计了符合承压含水层砂土应力状态、符合抽注水应力路径的单向压缩试验,研究了循环抽注水作用对砂土变形特性的影响规律及抽注水作用下砂土变形特性的影响因素。试验结果表明:抽水作用(加载)下砂土产生压缩变形,注水作用(卸载)下,砂土变形呈现压缩和回弹两种现象,且砂土孔隙比大(密度小)时易发生注水压缩现象;循环抽注水作用下砂土总体呈现压缩变形特性,随抽注水循环次数的增加和前期固结压力增大,注水作用下砂土变形逐渐由压缩向回弹转化。基于砂土结构演变,构建了以弹性理论和最小势能原理为基础的抽注水作用下砂土变形机理,解释了注水作用过程中砂土变形呈现的回弹与压缩交替波动的试验现象,用试验结果总结了注水强度、前期固结压力、注水速率等因素对砂土变形特性的影响规律,验证了抽注水作用下砂土变形机理的合理性。
    Abstract: In order to investigate the influences of artificial recharge and seasonal changes of groundwater levels on deformation characteristics of sand in confined aquifer, using the FlowTrac II system for incremental consolidation testing, the uniaxial compression test is designed, which satisfies the sand stress states of the confined aquifer and the stress paths of pumping-recharging groundwater. Moreover, the effect of cyclic pumping-recharging groundwater on sand deformation characteristics and influencing factors of sand deformation characteristics under pumping-recharging groundwater are studied. The tests results show that the sand is compressed during pumping (loading), while both compression and rebound are observed during recharging (unloading), and compression tends to occur in the sand of large void ratio (low density). In general, the sand presents compression deformations during cyclic pumping-recharging water. However, with the increase of the number of pumping-recharging cycles and pre-consolidation pressures, the sand deforms from compression to rebound during recharging water. Considering the evolution of sand structures, the deformation mechanism of sand during pumping-recharging water is proposed using the elastic theory and the principle of the minimum potential energy. The phenomenon of alternating rebound and compression of sand during recharging water is well explained. The influences of recharging water intensity, pre-consolidation pressure and recharging water rate on the deformation characteristics of sand are summarized, and the rationality of deformation mechanism of sand during pumping-recharging water is verified by the test results.
  • [1] ZHANG Y, XUE Y Q, WU J C, et al.Characteristics of aquifer system deformation in the Southern Yangtse Delta, China[J]. Engineering Geology, 2007, 90(3/4): 160-173.
    [2] SHI X, FANG R, WU J, et al.Sustainable development and utilization of groundwater resources considering land subsidence in Suzhou, China[J]. Engineering Geology, 2012, 124(1): 77-89.
    [3] ZHANG Y, WU J, XUE Y, et al.Land subsidence and uplift due to long-term groundwater extraction and artificial recharge in Shanghai, China[J]. Hydrogeology Journal, 2015, 23(8): 1851-1866.
    [4] 李明霞, 张云. 地下水控采条件下上海土层变形特征研究[J]. 上海国土资源, 2014, 35(4): 17-20.
    (LI Ming-xia, ZHANG Yun.Effect on land subsidence of controlling groundwater extraction in Shanghai[J]. Shanghai Land & Resources, 2014, 35(4): 17-20. (in Chinese))
    [5] SHI X Q, XUE Y Q, YE S J, et al.Characterization of land subsidence induced by groundwater withdrawals in Su-Xi-Chang area, China[J]. Environmental Geology, 2007, 52(1): 27-40.
    [6] 张云, 薛禹群, 施小清,等. 饱和砂性土非线性蠕变模型试验研究[J]. 岩土力学, 2005, 26(12): 1869-1873.
    (ZHANG Yun, XUE Yu-qun, SHI Xiao-qing, et al.Study on nonlinear creep model for saturated sand[J]. Rock and Soil Mechanics, 2005, 26(12): 1869-1873. (in Chinese))
    [7] 张云, 薛禹群, 李勤奋. 上海现阶段主要沉降层及其变形特征分析[J]. 水文地质工程地质, 2003, 30(5): 6-11.
    (ZHANG Yun, XUE Yu-qun, LI Qin-fen.Current prominent subsidence layer and its deformation properties in Shanghai[J]. Hydrogeology and Engineering Geology, 2003, 30(5): 6-11. (in Chinese))
    [8] 叶淑君, 薛禹群, 张云, 等. 上海区域地面沉降模型中土层变形特征研究[J]. 岩土工程学报, 2005, 27(2): 140-147.
    (YE Shu-jun, XUE Yu-qun, ZHANG Yun, et al.Study on the deformation characteristics of soil layers in regional land subsidence model of Shanghai[J]. Chinese Journal of Geotechnical Engineering, 2005, 27(2): 140-147. (in Chinese))
    [9] LI Y, HU Z, WENG T, et al.Experimental study on the vertical deformation of sand caused by cyclic withdrawal and recharging of groundwater[J]. Engineering Geology, 2014, 183: 247-253.
    [10] 王旭东, 罗东娜, 曾婕. 含水层注水砂土压缩变形试验研究[C]// 中国水利学会2014学术年会论文集(下册). 南京: 河海大学出版社, 2014: 739-744.
    (WANG Xu-dong, LUO Dong-na, ZENG Jie.Experimental study on compression deformation of sand induced by water injection in aquifer[C]// 2014 CHES Annual Conference (Volume 2). Nanjing: Hohai University Press, 2014: 739-744. (in Chinese))
    [11] 李广信, 郭瑞平. 土的卸载体缩与可恢复剪胀[J]. 岩土工程学报, 2000, 22(2): 158-161.
    (LI Guang-xin, GUO Rui-ping.Volume-contraction in unloading of shear tests and reversible dilatation of soils[J]. Chinese Journal of Geotechnical Engineering, 2000, 22(2): 158-161. (in Chinese))
    [12] 李广信, 武世锋. 土的卸载体缩的试验研究及其机理探讨[J]. 岩土工程学报, 2002, 24(1): 47-50.
    (LI Guang-xin, WU Shi-feng.Experimental research on volume-contraction of soil under unloading and examination of its mechanism[J]. Chinese Journal of Geotechnical Engineering, 2002, 24(1): 47-50. (in Chinese))
    [13] 张云, 薛禹群, 吴吉春, 等. 上海砂土蠕变变形特征的试验研究[J]. 岩土力学, 2009, 30(5):1226-1230.
    (ZHANG Yun, XUE Yu-qun, WU Ji-chun, et al.Experimental research on creep of Shanghai sands[J]. Rock and Soil Mechanics, 2009, 30(5): 1226-1230. (in Chinese))
    [14] 孙岳崧, 濮家骝, 李广信. 不同应力路径对砂土应力-应变关系影响[J]. 岩土工程学报, 1987, 6(6):78-88.
    (SUN Yue-song, PU Jia-liu, LI Guang-xin.The influence of different stress paths on stress-strain relation of sand[J]. Chinese Journal of Geotechnical Engineering, 1987, 6(6):78-88. (in Chinese))
    [15] 孔令伟, 钟方杰, 郭爱国, 等. 杭州湾浅层储气砂土应力路径试验研究[J]. 岩土力学, 2009, 30(8): 2209-2214.
    (KONG Ling-wei, ZHONG Fang-jie, GUO Ai-guo, et al.Experimental study of stress path of shallow gassy sand of Hangzhou Bay[J]. Rock and Soil Mechanics, 2009, 30(8):2209-2214. (in Chinese))
    [16] 朱俊高, 史江伟, 罗学浩, 等. 密度对砂土应力应变强度特性影响试验研究[J]. 岩土工程学报, 2016, 38(2): 336-341.
    (ZHU Jun-gao, SHI Jiang-wei, LUO Xue-hao, et al.Experimental study on stress-strain-strength behavior of sand with different densities[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(2):336-341. (in Chinese))
    [17] KOKUSHO T.Correlation of pore-pressure B-value with P-wave velocity and Poisson's ratio for imperfectly saturated sand or gravel[J]. Soils and Foundations, 2000, 40(4): 95-102.
    [18] 高国瑞. 近代土质学[M]. 2版. 北京: 科学出版社, 2012.
    (GAO Guo-rui.Neoteric soil geotechnology[M]. 2nd ed. Beijing: Science Press, 2012. (in Chinese))
    [19] 沈珠江. 理论土力学[M]. 北京: 中国水利水电出版社, 2000.
    (SHEN Zhu-jiang.Theoretical soil mechanics[M]. Beijing: China Water & Power Press, 2000. (in Chinese))
    [20] ODA M, NEMAT-NASSER S, KONISHI J.Stress-induced anisotropy in granular masses[J]. Soils and Foundations, 1985, 25(3): 85-97.
    [21] 矫德全, 陈愈炯. 土的各向异性和卸荷体缩[J]. 岩土工程学报, 1994, 16(4): 9-16.
    (JIAO De-quan, CHEN Yu-jiong.Anisotropy and volume-contraction of soil due to axial unloading in CD test[J]. Chinese Journal of Geotechnical Engineering, 1994, 16(4): 9-16. (in Chinese))
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  • 收稿日期:  2017-08-23
  • 发布日期:  2018-10-24

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