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学者姓名：江文豪
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Abstract ：
Polymer material (PM) is a novel vertical barrier material, demonstrated to be effective in impeding pollutants. However, the associated transport research is limited. This study aims to develop an analytical solution for twodimensional transport of organic contaminant in the PM-enhanced composite cutoff wall (CCW) system, where the variable substitution and Fourier transform methods are used. This analytical solution, available in various simplifications, is effectively validated via several comparisons. Following this, the analyses show that an increase in the non-uniformity of pollution source concentration distribution shortens the PM-enhanced CCW's breakthrough time (tb), while exhibits a marginal effect on the total flux at its exit. The increment of aquifer horizontal thickness prolongs the tb to some extent, whereas an increase in its hydraulic conductivity slightly reduces the tb. Additionally, the PM layer location is found to have a little effect on the PM-enhanced CCW's barrier performance. Furthermore, the equivalent performance assessment reveals that the improvement gained from increasing the PM layer thickness far surpasses that from increasing the single-layered cutoff wall thickness, and this difference may exceed 10. For a PM layer with low hydraulic conductivity, it is more suitable for engineering scenarios with the higher hydraulic head difference. Totally, the proposed analytical solution offers a valuable tool for designing the PM-enhanced CCW.
Keyword ：
Analytical solution Analytical solution Composite cutoff wall Composite cutoff wall Performance assessment Performance assessment Polymer material Polymer material Transport analyses Transport analyses Two-dimensional transport Two-dimensional transport
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| GB/T 7714 | Jiang, Wenhao , Wang, Hao , Cao, Linfeng . Analytical study for two-dimensional transport of organic contaminant in a polymer material-enhanced composite cutoff wall system [J]. | JOURNAL OF CONTAMINANT HYDROLOGY , 2025 , 269 . |
| MLA | Jiang, Wenhao 等. "Analytical study for two-dimensional transport of organic contaminant in a polymer material-enhanced composite cutoff wall system" . | JOURNAL OF CONTAMINANT HYDROLOGY 269 (2025) . |
| APA | Jiang, Wenhao , Wang, Hao , Cao, Linfeng . Analytical study for two-dimensional transport of organic contaminant in a polymer material-enhanced composite cutoff wall system . | JOURNAL OF CONTAMINANT HYDROLOGY , 2025 , 269 . |
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Abstract ：
The migration and immobilization of heavy metals in soil and groundwater pose significant environmental challenges, particularly in the context of Cr(VI), a highly toxic and mobile contaminant. Self-hardening slurry materials, commonly used for trench cutoff walls, have gained great attention due to their potential for pollutant containment. However, the relationship between their adsorption properties and pollutant diffusion behaviors remains poorly understood. This study investigates the adsorption properties and free-diffusion behaviors of Cr (VI) in two self-hardening slurry materials, SCB (slag-cement-bentonite) and MASB (MgO activated slagbentonite), to better understand the pollutant migration and immobilization mechanisms. Adsorption experiments reveal that MASB exhibits a higher Cr(VI) adsorption capacity than SCB, resulting in greater retardation factors and longer breakthrough times, improved by 57.6% and 94.9% at Cr(VI) concentrations of 2600 mg/L and 26000 mg/L, respectively. However, free-diffusion tests show that MASB has a larger migration depth and shorter breakthrough times, reduced by 68.2% and 57.9%. Microscopic analysis reveals that the presence of stable and ion-exchangeable hydration products (hydrotalcite-like phases) in MASB enhances its Cr(VI) adsorption capacity but provides favorable conditions for Cr(VI) diffusion. SCB demonstrates superior retardation to Cr(VI) in free-diffusion due to the transformation of AFm phases absorbed with Cr(VI) into stable AFt phases.
Keyword ：
Adsorption property Adsorption property Cr(VI) Cr(VI) Free-diffusion behavior Free-diffusion behavior Migration Migration Self-hardening slurry Self-hardening slurry
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| GB/T 7714 | Huang, Xiao , Zhang, Jinfang , Jiang, Wenhao . Insight into migration of Cr(VI) in self-hardening slurry materials for trench cutoff wall [J]. | ENVIRONMENTAL RESEARCH , 2025 , 269 . |
| MLA | Huang, Xiao 等. "Insight into migration of Cr(VI) in self-hardening slurry materials for trench cutoff wall" . | ENVIRONMENTAL RESEARCH 269 (2025) . |
| APA | Huang, Xiao , Zhang, Jinfang , Jiang, Wenhao . Insight into migration of Cr(VI) in self-hardening slurry materials for trench cutoff wall . | ENVIRONMENTAL RESEARCH , 2025 , 269 . |
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Abstract ：
为研究土工膜和压实黏土衬垫组成的复合衬垫中一维土体固结与污染物运移全耦合问题,分别推导得到了土体固结和污染物运移的控制方程,并结合相应的求解条件建立了可考虑土体固结与污染物运移相互影响的耦合模型.通过采用有限差分法,获得了该耦合模型的数值解;将所建耦合模型的计算结果与COMSOL软件的计算结果展开多方面的比较分析,验证了所建耦合模型的正确性.利用所建耦合模型,采用铅离子作为代表性污染物进行模拟分析.结果表明:污染物运移一方面会使得土体固结时的超孔隙水压力消散速率加快,另一方面会使得沉降量减小;土体固结会使得与污染物运移过程相关的参数减小,因而同一时间下污染物的浓度会下降,底部运移通量会降低.
Keyword ：
全耦合模型 全耦合模型 土体固结 土体固结 复合衬垫 复合衬垫 模拟分析 模拟分析 污染物运移 污染物运移
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| GB/T 7714 | 江文豪 , 冯晨 , 刘金都 et al. 复合衬垫中一维土体固结与污染物运移全耦合模型研究 [J]. | 华中科技大学学报（自然科学版） , 2024 , 52 (12) : 158-167 . |
| MLA | 江文豪 et al. "复合衬垫中一维土体固结与污染物运移全耦合模型研究" . | 华中科技大学学报（自然科学版） 52 . 12 (2024) : 158-167 . |
| APA | 江文豪 , 冯晨 , 刘金都 , 李江山 . 复合衬垫中一维土体固结与污染物运移全耦合模型研究 . | 华中科技大学学报（自然科学版） , 2024 , 52 (12) , 158-167 . |
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Abstract ：
The non-isothermal case in bottom composite liners not only induces thermal diffusion behavior, but also alters transport parameters. To date, however, limited work has been done on this topic. The present research constructs a model for one-dimensional non-isothermal transport of organic contaminant in the three-layer composite liner containing a defective geomembrane (GMB), which for the first time systematically includes the impacts of temperature-dependent transport parameters, and also considers the multiple transport mechanisms. The developed model is then solved via finite difference, and its rightness is well-proven through comparisons with the two experiment results and the other calculation approaches. After that, the numerical analysis shows that the temperature-dependent transport parameters exert a combined effect on the transport process, in which changes in diffusion coefficients and hydraulic conductivities with temperature remarkably accelerate the transport rate, whereas such a change for distribution coefficients leads to an opposite trend. The barrier performance assessment suggests that the growth of temperature difference in the composite liner, as well as the GMB defects density, reduces the defined breakthrough time (tb) and increases the bottom transport flux. Moreover, 1 cm geosynthetic clay liner is noticed to extend tb by approximately 2.23 years, while 0.1 m compacted clay liner yields the increment of tb by about 12.1 years. These findings contribute to the reasonable evaluation of bottom composite liners' barrier performance at a non-isothermal environment, which could provide guidance for optimizing their engineering design.
Keyword ：
Defective geomembrane Defective geomembrane Non-isothermal transport Non-isothermal transport Numerical study Numerical study Organic contaminant Organic contaminant Temperature-dependent transport parameter Temperature-dependent transport parameter Three-layer composite liner Three-layer composite liner
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| GB/T 7714 | Jiang, Wenhao , Li, Jiangshan , Ge, Shangqi . Numerical study for one-dimensional non-isothermal transport of organic contaminant in the three-layer composite liner containing a defective geomembrane [J]. | INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER , 2024 , 237 . |
| MLA | Jiang, Wenhao et al. "Numerical study for one-dimensional non-isothermal transport of organic contaminant in the three-layer composite liner containing a defective geomembrane" . | INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 237 (2024) . |
| APA | Jiang, Wenhao , Li, Jiangshan , Ge, Shangqi . Numerical study for one-dimensional non-isothermal transport of organic contaminant in the three-layer composite liner containing a defective geomembrane . | INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER , 2024 , 237 . |
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Abstract ：
Through the variable substitution and separated variable methods, this study develops a two-dimensional (2-D) axisymmetric diffusion analytical solution for organic pollutants in a circular-shaped cutoff wall (CCW) system for the first time, which can more precisely and reasonably simulate the diffusion behaviors in "circular-shaped" vertical barriers. Then, the proposed analytical solution's reasonableness is verified by comparing it with an existing analytical solution and a corresponding finite-difference solution. Meanwhile, the comparison suggests that this solution will degrade to a 2-D diffusion analytical solution when the pollution source radius is large enough. Furthermore, the presented analytical solution can also be simplified to a one-dimensional axisymmetric diffusion analytical solution, or to the axisymmetric diffusion analytical solutions in a single-layered medium. These exact analytical solutions can not only be applied to study axisymmetric diffusion behaviors under specific scenarios, but also be used to validate other complex numerical models. Last, a case study is conducted to investigate the impacts of pollution source concentration distribution, CCW horizontal thickness, and defined equivalent diffusion coefficient on the barrier performance. Overall, the proposed analytical solutions and obtained diffusion laws in this study can provide guidance for the service effect assessment and the engineering design of cutoff walls.
Keyword ：
analytical solution analytical solution axisymmetric diffusion axisymmetric diffusion barrier performance barrier performance circular-shaped circular-shaped cutoff wall system cutoff wall system organic pollutant organic pollutant
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| GB/T 7714 | Jiang, Wenhao , Ge, Shangqi , Li, Jiangshan . Analytical Solutions for Axisymmetric Diffusion of Organic Pollutants in a Circular-Shaped Cutoff Wall System [J]. | INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS , 2024 , 49 (1) : 312-328 . |
| MLA | Jiang, Wenhao et al. "Analytical Solutions for Axisymmetric Diffusion of Organic Pollutants in a Circular-Shaped Cutoff Wall System" . | INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS 49 . 1 (2024) : 312-328 . |
| APA | Jiang, Wenhao , Ge, Shangqi , Li, Jiangshan . Analytical Solutions for Axisymmetric Diffusion of Organic Pollutants in a Circular-Shaped Cutoff Wall System . | INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS , 2024 , 49 (1) , 312-328 . |
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