EXPERIMENTAL STUDY ON THE DEPOSITION CHARACTERISTICS OF FINE PARTICLE MIGRATION IN STRATIFIED SANDY SOILS
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摘要:
成层土广泛存在于第四纪沉积层，研究成层砂土中细颗粒迁移沉积特性对地下水回灌、注浆等工程具有重要意义。采用室内一维砂柱试验系统，选取3种粒径范围的砂土和21种典型分层方式对悬浮颗粒在饱和砂层中的迁移沉积过程进行研究。结果表明：不同的层状排序对悬浮颗粒的穿透曲线、沉积量和中值粒径有较大影响。当小粒径多孔介质覆盖大粒径多孔介质时，悬浮颗粒的穿透曲线会产生二次峰值，颗粒沉积量随着迁移距离的增加而减少，其沉积颗粒的中值粒径反而增大；当大粒径多孔介质覆盖小粒径多孔介质时，悬浮颗粒的穿透曲线只有一次峰值，颗粒的沉积量在分层处发生突增现象，沉积颗粒的中值粒径在砂柱中部减小。根据渗透系数的变化情况，将悬浮颗粒运动状态分为：沉淀、剥离运移。
Abstract:Quaternary sedimentary strata frequently contain formation soils,therefore understanding the features of how tiny particles in these soils migrate and deposit is crucial for groundwater recharge and grouting projects. Using an indoor,one-dimensional sand column test setup with three different grain size ranges of sandy soils and 21 common stratification techniques,the migration deposition process of suspended particles in saturated sand layers was examined. The findings demonstrate that the penetration curve,particle deposition rate,and median particle size of suspended particles are significantly affected by different stratification sequencing. The penetration curve of suspended particles creates a secondary peak when small-size porous media covers large-size porous media. The number of particles deposition reduces as migration distance rises,but the median particle size of deposited particles increases instead; When large-sized porous media cover smaller-sized porous media,the penetration curve of suspended particles has only one peak,the amount of particles deposited increases suddenly at the stratification,and the median particle size of deposited particles decreases in the middle of the sand column. According to the variation of permeability coefficient,the suspended particles movement state is classified as: sedimentation,stripping transport.
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Key words:
- Stratified sequencing /
- Porous media /
- Migration /
- Deposition /
- Permeability factor
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图 5
小粒径覆盖大粒径多孔介质的穿透曲线：(a) 试样2覆盖试样1；(b) 试样3覆盖试样1
Figure 5.
Penetration curve of small particle size covering large particle size porous media
图 6
大粒径覆盖小粒径多孔介质的穿透曲线：(a) 试样2覆盖试样3；(b) 试样1覆盖试样3
Figure 6.
Penetration curve of large particle size covering small particle size porous media
图 8
小粒径覆盖大粒径组合的沉积曲线：(a) 试样2覆盖试样1；(b) 试样3覆盖试样1；(c) 试样3覆盖试样2
Figure 8.
Deposition curves for small particle size covering large particle size combination
图 9
大粒径覆盖小粒径组合的沉积曲线：(a) 试样1覆盖试样2；(b) 试样1覆盖试样3；(c) 试样2覆盖试样3
Figure 9.
Deposition curves for large particle size overlay small particle size combinations
图 10
单一多孔介质的中值粒径变化关系
Figure 10.
Median particle size variation relationship for a single porous medium
图 11
沉积颗粒中值粒径与沉积位置的关系：(a) 试样2覆盖试样1；(b) 试样3覆盖试样1；(c) 试样3覆盖试样2；(d) 试样1覆盖试样2；(e) 试样2覆盖试样3；(f) 试样1覆盖试样3
Figure 11.
Relationship between median particle size and deposition location of deposited particles
图 12
渗透系数变化过程：(a) 试样1上层18cm+试样2下层37cm；(b) 试样2上层18cm+试样1下层37cm；(c) 试样3上层28 cm+试样2下层27cm；(d) 试样2上层28cm+试样3下层27cm
Figure 12.
Permeability coefficient change process
表 1
试验材料物理参数
Table 1.
Physical parameters of test materials
材料 D50 /μm 孔隙率/% 比表面积/m2·kg-1 渗透系数/cm·s-1 试样1 1568 45 8 5.85×10-1 试样2 1239 49 5 3.75×10-1 试样3 382 50 54 1.10×10-2 硅微粉 11 — 816 — 
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表 2
试验方案
Table 2.
Experimental program
组数 砂样 砂柱组合方式 名称 1 试样1 55cm 1 2 试样2 55cm 2 3 试样3 55cm 3 4 试样2 上层18cm 2(18)-1 试样1 下层37cm 5 试样2 上层28cm 2(28)-1 试样1 下层27cm 6 试样2 上层38cm 2(38)-1 试样1 下层17cm 7 试样1 上层18cm 1(18)-2 试样2 下层37cm 8 试样1 上层28cm 1(28)-2 试样2 下层27cm 9 试样1 上层38cm 1(38)-2 试样2 下层17cm 10 试样3 上层18cm 3(18)-1 试样1 下层37cm 11 试样3 上层28cm 3(28)-1 试样1 下层27cm 12 试样3 上层38cm 3(38)-1 试样1 下层17cm 13 试样1 上层18cm 1(18)-3 试样3 下层37cm 14 试样1 上层28cm 1(28)-3 试样3 下层27cm 15 试样1 上层38cm 1(38)-3 试样3 下层17cm 16 试样3 上层18cm 3(18)-2 试样2 下层37cm 17 试样3 上层28cm 3(28)-2 试样2 下层27cm 18 试样3 上层38cm 3(38)-2 试样2 下层17cm 19 试样2 上层18cm 2(18)-3 试样3 下层37cm 20 试样2 上层28cm 2(28)-3 试样3 下层27cm 21 试样2 上层38cm 2(38)-3 试样3 下层17cm
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Bai B,Long F,Rao D Y,et al. 2017. The effect of temperature on the seepage transport of suspended particles in a porous medium[J]. Hydrological Processes,31 (2): 382-393. doi: 10.1002/hyp.11034
Bai B, Rao D Y, Chang T, et al. 2019. A nonlinear attachment-detachment model with adsorption hysteresis for suspension-colloidal transport in porous media[J]. Journal of Hydrology, 578: 124080. doi: 10.1016/j.jhydrol.2019.124080
Bai B, Zhan P Y, Song X M, et al. 2015. Transport processes of suspended particles in saturated porous media by column seepage tests[J]. Chinese Journal of Geotchnical Engineering, 37 (10): 1786-1793. doi: 10.1007/s12541-015-0327-3
Chen X X, Bai B, Yu T, et al. 2013. Coupled effects of particle size and flow rate on characteristics of particle transportation and deposition in porous media[J]. Chinese Journal of Rock Mechanics and Engineering, 32 (S1): 2840-2845.
Dai C S, Qi Y Z, Lei H Y, et al. 2016. Deposition effect of suspended microparticle on the local permeability in porous media[J]. Hydrogeology & Engineering Geology, 43 (6): 1-6.
Li H W, Bai B, Wang M S, et al. 2015. Researches on miscible contaminant transport in unsaturated multi-layered soils[J]. China Civil Engineering Journal, 48 (S1): 206-211.
Liu Q L, Xu S H, Liu J L. 2008. Comparison between kaolinite and SiO2 colloid in transport behavior in saturated porous media[J]. Acta Pedologica Sinica, 45 (3): 445-451. doi: 10.3321/j.issn:0564-3929.2008.03.009
Liu Q S, Cui X Z, Zhang C Y, et al. 2014. Effects of particle size on characteristics of transportation and deposition of suspended particles in porous media[J]. Chinese Journal of Geotchnical Engineering, 36 (10): 1777-1783.
Luo H, Wu F Q, Chang J Y, et al. 2021. Pore characteristics of Malan loess—A case study at Zhaojiaan landslide[J]. Journal of Engineering Geology, 29 (5): 1366-1372.
Moghadasi J, Müller-Steinhagen H, Jamialahmadi M, et al. 2004. Theoretical and experimental study of particle movement and deposition in porous media during water injection[J]. Journal of Petroleum Science and Engineering, 43(3-4): 163-181. doi: 10.1016/j.petrol.2004.01.005
Romano N, Brunone B, Santini A. 1998. Numerical analysis of one-dimensional unsaturated flow in layered soils[J]. Advances in Water Resources, 21 (4): 315-324. doi: 10.1016/S0309-1708(96)00059-0
Sen T K, Khilar K C. 2006. Review on subsurface colloid and colloid-associated contaminant transport in saturated porous media[J]. Advances in Colloid and Interface Science, 119(2-3): 71-96. doi: 10.1016/j.cis.2005.09.001
Sun H, Gao B, Tian Y, et al. 2010. Kaolinite and lead in saturated porous media: facilitated and impeded transport[J]. Journal of Environmental Engineering, 136 (11): 1305-1308. doi: 10.1061/(ASCE)EE.1943-7870.0000250
Tu A G. 2017. Advances in water infiltration and solute transport in layered soil[J]. Acta Agriculturae Universitatis Jiangxiensis, 39 (4): 818-825.
Walshe G E, Pang L, Flury M, et al. 2010. Effects of pH, ionic strength, dissolved organic matter, and flow rate on the co-transport of MS2 bacteriophages with kaolinite in gravel aquifer media[J]. Water Research, 44 (4): 1255-1269. doi: 10.1016/j.watres.2009.11.034
Wang Z B, Wang R, Hu M J, et al. 2010. Characteristics of gravelly soil and their implications for slope for slope instability in Jiangjiagou ravine[J]. Rock and Soli Mechanics, 31 (S2): 206-211.
Wang Z J. 2012. Laboratory research on the law of suspended solids clogging during urban stormwater groundwater recharge[D]. Changchun: Jilin University of China.
Yang S T, Lü Y, He Y Y, et al. 2021. Analysis of pore structure characteristics and seepage simulation of turfy soil based on CT scans[J]. Journal of Engineering Geology, 29 (5): 1354-1365.
Zhang J, Ma G D, Dai Z X, et al. 2018. Numerical study on pore clogging mechanism in pervious pavements[J]. Journal of Hydrology, 565 : 589-598. doi: 10.1016/j.jhydrol.2018.08.072
Zhang J, Li P, Li T L, et al. 2021. Discontinuous deformation simulation of loess sedimentation process and microstructure model[J]. Journal of Engineering Geology, 29 (4): 1199-1206.
Zhang Y G, Liang W, Guo S F, et al. 2022. Analysis for effects of loess pore structure evolution on soil-water characteristics[J]. Journal of Engineering Geology, 30 (6): 1998-2005.
Zhang Z H, Li H Y, Shi Y M. 2014. Experimental study on permeability properties and micro-structure of clay contaminated by Cu2+[J]. China Civil Engineering Journal, 47 (12): 122-129.
Zhao W, Lin Q, Xu S H. 2020. Effect of colloidal particle on permeability of saturated porous media different in particle size[J]. Acta Pedologica Sinica, 57 (2): 336-346.
Zheng H, Niu W Q, Mao W W, et al. 2021. Mechanics of granular material and the application in engineering geology[J]. Journal of Engineering Geology, 29 (1): 12-24.
Zheng X L, Shan B B, Cui H, et al. 2013. Test and numerical simulation on physical clogging during aquifer artificial recharge[J]. Earth Science—Journal of China University of Geosciences, 38 (6): 1321-1326.
Zhou Y C, Xu H L, Chen J D, et al. 2022. Particle migration and clogging in porous media with seepage[J]. Chinese Journal of Geotechnical Engineering, 44 (2): 255-263.
Zhu Q, Su L J, Liu Z Y, et al. 2021. Study of seepage in wide-grading soils with particles migration[J]. Rock and Soli Mechanics, 42 (1): 125-134.
白冰, 张鹏远, 宋晓明, 等. 2015. 渗透作用下多孔介质中悬浮颗粒的迁移过程研究[J]. 岩土工程学报, 37 (10): 1786-1793.
陈星欣, 白冰, 于涛, 等. 2013. 粒径和渗流速度对多孔介质中悬浮颗粒迁移和沉积特性的耦合影响[J]. 岩石力学与工程学报, 32 (S1): 2840-2845.
戴传山, 祁芸芝, 雷海燕, 等. 2016. 悬浮微小颗粒对多孔介质渗流特性影响的实验研究[J]. 水文地质工程地质, 43 (6): 1-6.
李华伟, 白冰, 王梦恕, 等. 2015. 可溶性污染物在非饱和成层土中的迁移规律研究[J]. 土木工程学报, 48 (S1): 206-211.
刘庆玲, 徐绍辉, 刘建立. 2008. 饱和多孔介质中高岭石胶体和SiO2胶体运移行为比较[J]. 土壤学报, 45 (3): 445-451.
刘泉声, 崔先泽, 张程远, 等. 2014. 粒径对多孔介质中悬浮颗粒迁移-沉积特性的影响[J]. 岩土工程学报, 36 (10): 1777-1783.
罗浩, 伍法权, 常金源, 等. 2021. 马兰黄土孔隙结构特征——以赵家岸地区黄土为例[J]. 工程地质学报, 29 (5): 1366-1372. doi: 10.13544/j.cnki.jeg.2014-0392
涂安国. 2017. 层状土壤水分入渗与溶质运移研究进展[J]. 江西农业大学学报, 39 (4): 818-825.
王志兵, 汪稔, 胡明鉴, 等. 2010. 蒋家沟砾石土的特性及其对斜坡失稳的意义[J]. 岩土力学, 31 (S2): 206-211.
王子佳. 2012. 城市雨洪水地下回灌过程中悬浮物堵塞规律的实验研究[D]. 长春: 吉林大学.
杨圣涛, 吕岩, 贺元源, 等. 2021. 基于CT扫描的草炭土孔隙结构分析及渗流模拟[J]. 工程地质学报, 29 (5): 1354-1365. doi: 10.13544/j.cnki.jeg.2021-0418
张杰, 李萍, 李同录, 等. 2021. 黄土沉积过程及微结构模型的非连续变形分析[J]. 工程地质学报, 29 (4): 1199-1206. doi: 10.13544/j.cnki.jeg.2019-517
张亚国, 梁伟, 郭松峰, 等. 2022. 黄土孔隙结构演化对其土-水特性影响分析[J]. 工程地质学报, 30 (6): 1998-2005. doi: 10.13544/j.cnki.jeg.2022-0578
张志红, 李红艳, 师玉敏. 2014. 重金属Cu2+污染土渗透特性试验及微观结构分析[J]. 土木工程学报, 47 (12): 122-129.
赵伟, 林青, 徐绍辉. 2020. 胶体颗粒对不同粒径饱和多孔介质渗透性的影响[J]. 土壤学报, 57 (2): 336-346.
郑虎, 牛文清, 毛无卫, 等. 2021. 颗粒物质力学及其在工程地质领域中的应用初探[J]. 工程地质学报, 29 (1): 12-24. doi: 10.13544/j.cnki.jeg.2021-0017
郑西来, 单蓓蓓, 崔恒, 等. 2013. 含水层人工回灌物理堵塞的实验与数值模拟[J]. 地球科学(中国地质大学学报), 38 (6): 1321-1326.
周永潮, 许恒磊, 陈佳代, 等. 2022. 渗流作用下多孔介质内颗粒迁移与堵塞规律研究[J]. 岩土工程学报, 44 (2): 255-263.
朱秦, 苏立君, 刘振宇, 等. 2021. 颗粒迁移作用下宽级配土渗透性研究[J]. 岩土力学, 42 (1): 125-134.
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