Advances in Water Resources最新文献_第5页

Predicting evaporation and heat transfer of a coupled surface/subsurface problem using a simplified one-region model 用简化的单区域模型预测地表/地下耦合问题的蒸发和传热

IF 4.2 2区环境科学与生态学 Q1 WATER RESOURCES

Advances in Water Resources

Pub Date : 2025-12-01 Epub Date: 2025-09-26 DOI: 10.1016/j.advwatres.2025.105128

Thomas Doury , Pierre Horgue , Romain Guibert , Jean Raymond , Gérald Debenest

Dealing with environmental flows poses significant challenges, particularly when it comes to accurately predicting mass and heat exchanges between the atmosphere and a variably saturated porous medium. In this work, we develop a non-isothermal, two-phase, two-component porous medium model equipped with physically based boundary conditions that incorporate the influence of free-flow conditions on soil evaporation and the resulting geothermal heat flux. This approach enables the use of average parameters to describe the free-flow domain, thus avoiding the need to explicitly simulate atmospheric flow while maintaining accuracy in both evaporation estimation and subsurface dynamics.

The model is validated against well-documented laboratory-scale experiments from the literature, covering a range of free-flow conditions and soil properties. It is then employed to assess the impact of soil drying dynamics on the retrievable geothermal heat flux across different soil types. The results demonstrate distinct thermal responses strongly linked to soil saturation behavior. A comparative study across different soil types and water table depths, complemented by a sensitivity analysis of free-flow parameters, reveals two distinct regimes. For shallow water tables, free-flow properties dominate, allowing for simplified groundwater modeling. In contrast, for deeper water tables, the influence of free-flow parameters becomes negligible, and a detailed representation of groundwater flow-including evaporation-is essential. The proposed approach enables accurate modeling across both regimes without the need to simulate the entire free-flow domain.

处理环境流动带来了巨大的挑战，特别是当涉及到准确预测大气和可变饱和多孔介质之间的质量和热交换时。在这项工作中，我们开发了一个非等温、两相、双组分多孔介质模型，该模型配备了基于物理的边界条件，其中包括自由流动条件对土壤蒸发和由此产生的地热通量的影响。这种方法可以使用平均参数来描述自由流域，从而避免了明确模拟大气流动的需要，同时保持了蒸发估计和地下动力学的准确性。该模型通过文献中充分记录的实验室规模实验进行了验证，涵盖了一系列自由流动条件和土壤特性。利用该模型评估了土壤干燥动态对不同土壤类型可回收地热通量的影响。结果表明，明显的热响应与土壤饱和行为密切相关。一项跨不同土壤类型和地下水位深度的比较研究，加上对自由流动参数的敏感性分析，揭示了两种不同的制度。对于浅层地下水位，自由流动特性占主导地位，允许简化地下水建模。相比之下，对于较深的地下水位，自由流动参数的影响变得可以忽略不计，地下水流动的详细表示——包括蒸发——是必不可少的。所提出的方法可以在不需要模拟整个自由流域的情况下实现跨两个区域的精确建模。

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引用次数: 0

A theoretical coupled model for describing porous medium surface clogging process 描述多孔介质表面堵塞过程的理论耦合模型

IF 4.2 2区环境科学与生态学 Q1 WATER RESOURCES

Advances in Water Resources

Pub Date : 2025-12-01 Epub Date: 2025-11-03 DOI: 10.1016/j.advwatres.2025.105164

Hexuan Zhang , Mingjian Hu , Yaozu Zhang , Ru Qu , Siyang Wang

Surface clogging in porous media challenges engineering applications and scientific research due to its complex mechanisms and diverse models. This study introduces a novel framework integrating intermediate blocking and cake filtration to characterize hydraulic conductivity evolution. Systematic constant-flow experiments demonstrate the model's superior performance (R² > 0.95) over existing models in simulating various recharge solutions. The key findings are as follows: 1) The model-predicted transition time of the clogging mechanism occurs earlier with increasing d₅₀/D₅₀ ratio and recharge solution concentration; 2) Terminal clogging resistance varies significantly depending on the clogging agent: suspended solids exhibit comparable resistances from intermediate blocking and cake filtration, whereas in colloidal systems, cake filtration dominates (>50 % contribution), a dominance that is further amplified at elevated concentrations; 3) The accelerated pressure buildup in porous media is primarily attributable to the dominance of cake filtration. Clogging reaches its terminal state either when the hydraulic conductivity decays to 10 % of its initial value or upon completion of the mechanism transition. The developed model provides critical insights for predicting and mitigating clogging-induced performance degradation in geoenvironmental systems.

多孔介质表面堵塞机理复杂，模型多样，给工程应用和科学研究带来了挑战。本研究引入了一种结合中间阻塞和滤饼过滤的新框架来表征水导率的演变。系统恒流实验表明，该模型在模拟各种补给方案时的性能优于现有模型（R²> 0.95）。主要发现如下：1)随着d50/ d50比和补给液浓度的增加，模型预测的堵塞机制过渡时间提前；2)终端堵塞阻力因堵塞剂的不同而有显著差异：悬浮固体在中间堵塞和饼状过滤中表现出相当的阻力，而在胶体系统中，饼状过滤占主导地位（贡献50%），当浓度升高时，这种优势会进一步扩大；3)多孔介质中压力的加速积累主要是由于滤饼过滤的主导作用。当水力传导率下降到初始值的10%或完成机制转变时，堵塞达到其终止状态。开发的模型为预测和减轻地球环境系统中堵塞引起的性能下降提供了重要的见解。

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引用次数: 0

Pore-scale imaging of hydrogen and methane storage in fractured aquifer rock: The impact of gas type on relative permeability 裂缝性含水层储氢甲烷孔隙尺度成像：气型对相对渗透率的影响

IF 4.2 2区环境科学与生态学 Q1 WATER RESOURCES

Advances in Water Resources

Pub Date : 2025-12-01 Epub Date: 2025-09-10 DOI: 10.1016/j.advwatres.2025.105109

Sojwal Manoorkar , Gülce Kalyoncu , Hamdi Omar , Soetkin Barbaix , Dominique Ceursters , Maxime Latinis , Stefanie Van Offenwert , Tom Bultreys

Underground hydrogen storage in saline aquifers is a potential solution for seasonal renewable energy storage. Among potential storage sites, facilities used for underground natural gas storage have advantages, including well-characterized cyclical injection-withdrawal behavior and partially reusable infrastructure. However, the differences between hydrogen-brine and natural gas-brine flow, particularly through fractures in the reservoir and the sealing caprock, remain unclear due to the complexity of two-phase flow. Therefore, we investigate fracture relative permeability for hydrogen versus methane (natural gas) and nitrogen (commonly used in laboratories). Steady-state relative permeability experiments were conducted at 10 MPa on fractured carbonate rock from the Loenhout natural gas storage in Belgium, where gas flows through

μ

m-to-mm scale fractures. Our results reveal that the hydrogen exhibits similar relative permeability curves to methane, but both are significantly lower than those measured for nitrogen. This implies that nitrogen cannot reliably serve as a proxy for hydrogen at typical reservoir pressures. The low relative permeabilities for hydrogen and methane indicate strong fluid phase interference, which traditional relative permeability models fail to capture. This is supported by our observation of periodic pressure fluctuations associated with intermittent fluid connectivity for hydrogen and methane. In conclusion, our findings suggest that the fundamental flow properties of fractured rocks are complex but relatively similar for hydrogen and natural gas. This is an important insight for predictive modeling of the conversion of Loenhout and similar natural gas storage facilities, which is crucial to evaluate their hydrogen storage efficiency and integrity.

盐碱层地下储氢是季节性可再生能源储存的潜在解决方案。在潜在的储存地点中，用于地下天然气储存的设施具有优势，包括具有良好特征的周期性注入-提取行为和部分可重复使用的基础设施。然而，由于两相流的复杂性，盐水氢流和天然气盐水流之间的区别仍然不清楚，特别是通过储层和密封盖层的裂缝。因此，我们研究了氢气与甲烷（天然气）和氮气（通常用于实验室）的裂缝相对渗透率。以比利时Loenhout天然气储层碳酸盐岩裂缝为研究对象，在10 MPa条件下进行了稳态相对渗透率实验。结果表明，氢气的相对渗透率曲线与甲烷相似，但两者都明显低于氮的相对渗透率曲线。这意味着在典型的储层压力下，氮不能可靠地作为氢的代表。氢气和甲烷相对渗透率较低，表明流体相干扰较强，这是传统相对渗透率模型无法捕捉的。我们观察到与氢气和甲烷的间歇性流体连通性相关的周期性压力波动，这一点得到了支持。综上所述，我们的研究结果表明，裂缝岩石的基本流动特性是复杂的，但氢气和天然气的基本流动特性相对相似。这是对Loenhout和类似天然气储存设施转换的预测建模的重要见解，这对于评估其储氢效率和完整性至关重要。

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引用次数: 0

HydroStartML: A combined machine learning and physics-based approach to reduce hydrological model spin-up time HydroStartML：结合机器学习和基于物理的方法，减少水文模型启动时间

IF 4.2 2区环境科学与生态学 Q1 WATER RESOURCES

Advances in Water Resources

Pub Date : 2025-12-01 Epub Date: 2025-09-24 DOI: 10.1016/j.advwatres.2025.105124

Louisa Pawusch , Stefania Scheurer , Wolfgang Nowak , Reed M. Maxwell

Finding the initial depth-to-water table (DTWT) configuration of a catchment is a critical challenge when simulating the hydrological cycle with integrated models, significantly impacting simulation outcomes. Traditionally, this involves iterative spin-up computations, where the model runs under constant atmospheric settings until steady-state is achieved. These so-called model spin-ups are computationally expensive, often requiring many years of simulated time, particularly when the initial DTWT configuration is far from steady state.

To accelerate the model spin-up process we developed HydroStartML, a machine learning emulator trained on steady-state DTWT configurations across the contiguous United States. HydroStartML predicts, based on available data like conductivity and surface slopes, a DTWT configuration of the respective watershed, which can be used as an initial DTWT.

Our results show that initializing spin-up computations with HydroStartML predictions leads to faster convergence than with other initial configurations like spatially constant DTWTs. The emulator accurately predicts configurations close to steady state, even for terrain configurations not seen in training, and allows especially significant reductions in computational spin-up effort in regions with deep DTWTs. This work opens the door for hybrid approaches that blend machine learning and traditional simulation, enhancing predictive accuracy and efficiency in hydrology for improving water resource management and understanding complex environmental interactions.

在使用综合模型模拟水文循环时，寻找集水区的初始深度到地下水位（DTWT）配置是一个关键挑战，对模拟结果有重大影响。传统上，这涉及迭代的自旋上升计算，其中模型在恒定的大气设置下运行，直到达到稳定状态。这些所谓的模型旋转在计算上是昂贵的，通常需要多年的模拟时间，特别是当初始DTWT配置远非稳定状态时。为了加速模型启动过程，我们开发了HydroStartML，这是一种机器学习模拟器，可以在美国各地的稳态DTWT配置上进行训练。根据电导率和地表坡度等可用数据，HydroStartML可以预测相应流域的DTWT配置，这可以用作初始DTWT。我们的结果表明，与其他初始配置（如空间常数dtwt）相比，使用HydroStartML预测初始化自旋向上计算可以更快地收敛。模拟器准确地预测了接近稳态的配置，即使是在训练中没有看到的地形配置，并且在深度dtwt区域可以显著减少计算自旋的工作量。这项工作为混合机器学习和传统模拟的混合方法打开了大门，提高了水文学预测的准确性和效率，以改善水资源管理和理解复杂的环境相互作用。

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引用次数: 0

Simplified theoretical analyses of lagging Darcy flow and land subsidence in a groundwater pumping system of three horizontal layers: An elastic thin plate approach 三水平层地下水抽水系统滞后达西流与地面沉降的简化理论分析：弹性薄板方法

IF 4.2 2区环境科学与生态学 Q1 WATER RESOURCES

Advances in Water Resources

Pub Date : 2025-12-01 Epub Date: 2025-10-22 DOI: 10.1016/j.advwatres.2025.105155

Jun-Hong Lin , Chih-Yu Liu , Chien-Chung Ke , Ying-Fan Lin

Groundwater pumping often produces subsidence that persists after extraction stops, yet classical diffusion or consolidation models struggle to reproduce this lingering response because they omit hydraulic time lags and overburden flexure. This study develops a semi-analytical plate-lag framework for a three-layer aquifer system that couples delayed Darcy flow in the pumped unit with elastic bending of the aquitard. Laplace and Hankel transforms yield fast predictions of drawdown and surface displacement, and a Morris global sensitivity analysis ranks the governing parameters through time. Calibration against constant-rate pumping tests at the San-Tan and Ta-Hsin stations on the Choshui River alluvial fan reproduced observation-well drawdowns and indicated bending-induced displacements at the well below thirty micrometers, which is beneath routine detection thresholds for geodetic networks. A single detectability experiment that reduced transmissivity and aquitard hydraulic conductivity, increased skeletal storage, and softened the plate generated displacements between eight and fifteen millimeters, identifying the stress regimes under which bending-lag effects become observable. The framework thus provides a rapid diagnostic for interpreting pumping tests, screening scenarios where bending-lag contributions are negligible, and prioritizing monitoring strategies in subsidence-prone basins.

地下水抽取通常会在开采停止后产生持续的下沉，然而经典的扩散或固结模型很难再现这种持续的响应，因为它们忽略了水力时滞和覆盖层弯曲。本研究为三层含水层系统开发了半解析板滞框架，该系统将泵送单元中的延迟达西流动与含水层的弹性弯曲耦合在一起。拉普拉斯和汉克尔变换可以快速预测下降和地表位移，莫里斯全局敏感性分析可以对控制参数进行时间排序。根据在潮水河冲积扇上的三滩站和大新站进行的恒定速率抽水试验进行校准，再现了观测井的下降，并指出井的弯曲诱发位移低于30微米，这低于大地测量网的常规检测阈值。一个单一的可探测性实验降低了透光率和水导率，增加了骨骼储存，软化了板，产生了8到15毫米的位移，确定了弯曲滞后效应可以观察到的应力状态。因此，该框架为解释泵送测试提供了快速诊断，筛选弯曲滞后贡献可以忽略不计的场景，并在容易下沉的盆地中优先考虑监测策略。

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引用次数: 0

A semi-analytical solution for seepage field and soil deformation induced by coupled pre-excavation dewatering and groundwater recharge with a suspended waterproof curtain considering delayed phreatic surface response 考虑延迟表层响应的开挖前降水与悬挂式防水帷幕耦合回灌渗流场及土体变形半解析解

IF 4.2 2区环境科学与生态学 Q1 WATER RESOURCES

Advances in Water Resources

Pub Date : 2025-12-01 Epub Date: 2025-09-07 DOI: 10.1016/j.advwatres.2025.105111

Weitao Yang , Liang Xiao , Guoxiong Mei

Accurate prediction and effective control of soil deformation induced by pre-excavation dewatering are essential for construction safety in underground space development. However, the coupled effects of suspended waterproof curtains and external groundwater recharge on drawdown and soil deformation in unconfined aquifers remain unclear, particularly considering the delayed response of the phreatic surface. This study develops an improved theoretical model to characterize soil deformation induced by pre-excavation dewatering and external recharge under plane strain conditions, explicitly considering a suspended waterproof curtain and the time-dependent behavior of the water table. A semi-analytical solution is then derived using integral transform techniques and verified through laboratory model tests, degradation solutions, and numerical simulations. Parametric analyses indicate that prolonging time required for the groundwater level within the pit to reach the target value can substantially decrease soil settlement before excavation, which has minimal effect on the final steady-state settlement. Increasing the horizontal distance between recharge wells and the foundation pit mitigates far-field drawdown but may increase soil settlement within the pit, whereas longer well screens enhance phreatic surface recovery near the excavation. Furthermore, increasing the penetration depth of the waterproof curtain and appropriately scheduling the initiation of recharge wells can effectively limit external groundwater inflow, thereby reducing groundwater drawdown and soil settlement outside the foundation pit. Specifically, increasing the penetration depth of the waterproof curtain from 6 m to 12 m reduces internal settlement by 6.7% and external settlement by 77.9%, suggesting a stronger mitigation effect on the external side. These findings not only extend existing theoretical models by explicitly incorporating the coupled effects of suspended waterproof curtains and external recharge wells with delayed phreatic surface response, but also support and broaden prior findings by demonstrating how recharge design parameters and initiation timing critically govern drawdown and soil deformation in deep excavations.

准确预测和有效控制基坑降水引起的土体变形对地下空间开发施工安全至关重要。然而，悬式防水帷幕和外部地下水补给对无承压含水层下陷和土壤变形的耦合效应尚不清楚，特别是考虑到潜水面的延迟响应。本研究建立了一个改进的理论模型来描述平面应变条件下开挖前降水和外部补给引起的土壤变形，明确考虑了悬挂防水帷幕和地下水位的时间依赖性行为。然后使用积分变换技术推导出半解析解，并通过实验室模型试验、退化解和数值模拟进行验证。参数分析表明，延长基坑内地下水位达到目标值所需的时间可以显著降低基坑开挖前土体沉降，对最终稳态沉降影响最小。增加补给井与基坑之间的水平距离可以减轻远场下沉，但可能会增加基坑内的土壤沉降，而较长的井筛可以提高基坑附近的表层恢复。增加防水帷幕的侵深，适当安排回灌井的起爆，可以有效地限制外部地下水的流入，从而减少地下水的下降和基坑外土体的沉降。其中，将防水帷幕的穿透深度从6 m增加到12 m，可使内部沉降减少6.7%，外部沉降减少77.9%，表明对外部的减缓效果更强。这些发现不仅扩展了现有的理论模型，明确地考虑了悬式防水帷幕和外部补给井的耦合效应与延迟的表层响应，而且支持和拓宽了先前的发现，证明了补给设计参数和启动时间如何关键地控制深基坑的下陷和土壤变形。

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引用次数: 0

Scale-adaptive expected mass fraction framework for contaminant dilution mapping in coastal waters 沿海水域污染物稀释制图的尺度自适应期望质量分数框架

IF 4.2 2区环境科学与生态学 Q1 WATER RESOURCES

Advances in Water Resources

Pub Date : 2025-12-01 Epub Date: 2025-09-26 DOI: 10.1016/j.advwatres.2025.105130

Morena Galešić Divić , Vladimir Divić , Darko Koračin , Roko Andričević

Coastal waters face continuous threats from inland pollution sources, such as rivers, torrents, and wastewater discharges. These sources pose significant challenges to water quality management. To address the complex dynamics of pollutant transport and dilution in these environments, we introduce a scale-adaptive Expected Mass Fraction (EMF) framework. This framework enables the quantification and mapping of contaminant dilution through a flexible spatial representation, adaptable to arbitrary scales and tailored to specific water quality assessment needs. By combining Lagrangian particle tracking, stochastic ensemble analysis, and spatially integrated concentration statistics, the framework offers a comprehensive tool for evaluating the auto-purification potential of coastal waters. Applied to the Kaštela Bay and Brač Channel in the Eastern Adriatic Sea, the methodology captures the effects of distinct hydrodynamic events – Bora and Sirocco – on pollutant dispersion. Results reveal significant variations in contaminant transport patterns. Bora events exhibit localized surface spreading, while Sirocco events drive extensive horizontal and vertical dispersion. The proposed Auto-Purification Potential (APP) index consolidates these complex dynamics into a region-oriented map, providing a compact and accessible visualization of auto-purification potential. Such a visualization can support public awareness and informed decision-making in coastal water quality management. This study advances the application of EMF concepts to complex hydrodynamic environments, demonstrating its adaptability to diverse spatial scales. The findings provide a foundation for effective pollution monitoring and management strategies in coastal water ecosystems and offer the potential for broader applications in other environmental systems.

沿海水域面临内陆污染源的持续威胁，如河流、激流和废水排放。这些来源对水质管理构成重大挑战。为了解决这些环境中污染物迁移和稀释的复杂动力学，我们引入了一个自适应尺度的期望质量分数（EMF）框架。该框架通过灵活的空间表示实现污染物稀释的量化和制图，可适应任意尺度并根据特定的水质评估需求量身定制。通过结合拉格朗日粒子跟踪、随机集合分析和空间集成浓度统计，该框架为评估沿海水域的自净化潜力提供了一个全面的工具。该方法应用于东亚得里亚海的Kaštela湾和布拉斯海峡，捕捉了不同的水动力事件（Bora和Sirocco）对污染物扩散的影响。结果揭示了污染物运输模式的显著变化。Bora事件表现出局部的表面扩散，而Sirocco事件则表现出广泛的水平和垂直扩散。提出的自动净化潜力（APP）指数将这些复杂的动态整合到一个面向区域的地图中，提供了一个紧凑且易于访问的自动净化潜力可视化。这种可视化可以支持公众对沿海水质管理的认识和知情决策。本研究推进了电磁场概念在复杂水动力环境中的应用，展示了其对不同空间尺度的适应性。研究结果为沿海水域生态系统的有效污染监测和管理策略提供了基础，并为在其他环境系统中更广泛的应用提供了潜力。

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引用次数: 0

Comparative predictions of solute transport with hydraulic tomography in a laboratory sandbox aquifer: the importance of the injection data 实验室沙箱含水层中溶质运移与水力层析成像的对比预测：注入数据的重要性

IF 4.2 2区环境科学与生态学 Q1 WATER RESOURCES

Advances in Water Resources

Pub Date : 2025-12-01 Epub Date: 2025-10-20 DOI: 10.1016/j.advwatres.2025.105150

Huiyang Qiu , Jie Zhang , Yuanzheng Zhang , Yang Song , Tianning Li , Bernard Konadu Amoah , Rui Hu , Yong Huang

Over the past two decades, hydraulic tomography (HT) has been proven as a robust method for subsurface heterogeneity characterization with high resolution, which is critical for predicting solute transport. In this paper, HT was used to characterize the hydraulic conductivity (K) distribution within a laboratory sandbox aquifer, following established workflows from previous studies. The influence of estimated K fields on model calibration and validation performance was evaluated. Additionally, tracer injection data were considered as a key factor in the analytical framework. The simulated concentrations were compared to the observed data using inverse results derived from multiple modeling approaches, coupled with the classical advection–dispersion equation. The analysis yielded the following results: 1) geostatistical inversion provided better heterogeneity characterization compared to geology based zonation model, particularly in terms of hydraulic head data; 2) geostatistical inversion exhibited enhanced performance over the geology-based zonation model in predicting solute transport as evidenced by tracer concentration data, when injection data was incorporated into the inverse modeling framework; 3) breakthrough curve analysis revealed that solute transport predictions derived from HT still exhibited notable limitations, highlighting the need for further improvements; 4) overestimation issue identified in the HT results is linked to factors beyond observational error. Overall, this study highlights that the advantages of geostatistical inversion are obvious in heterogeneity characterization, and the involving of the tracer injection data is critical for improving solute transport prediction.

在过去的二十年中，水力层析成像（HT）已被证明是一种可靠的地下非均质性表征方法，具有高分辨率，这对于预测溶质运移至关重要。在本文中，根据先前研究的既定工作流程，使用高温法来表征实验室沙箱含水层内的水力传导性(K)分布。评估了估算的K场对模型校准和验证性能的影响。此外，示踪剂注入数据被认为是分析框架中的关键因素。结合经典的平流-色散方程，利用多种模拟方法的反演结果将模拟浓度与观测数据进行了比较。分析结果如下：1)与基于地质的分带模型相比，地质统计反演提供了更好的非均质性表征，特别是在水头数据方面；2)当注入数据被纳入反演模型框架时，地质统计反演在预测溶质运移方面表现出比基于地质的分带模型更强的性能，示踪剂浓度数据证明了这一点；3)突破曲线分析表明，高温法预测溶质输运仍有明显的局限性，需要进一步改进；4)高温观测结果中发现的高估问题与观测误差以外的因素有关。综上所述，地统计反演在非均质性表征方面优势明显，示踪剂注入数据的参与对提高溶质输运预测至关重要。

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引用次数: 0

Modeling hydro-thermal processes in fractured geothermal reservoirs using embedded discrete fracture model (EDFM) and MRST 基于嵌入离散裂缝模型（EDFM）和MRST的裂缝性地热储层热液过程建模

IF 4.2 2区环境科学与生态学 Q1 WATER RESOURCES

Advances in Water Resources

Pub Date : 2025-12-01 Epub Date: 2025-09-17 DOI: 10.1016/j.advwatres.2025.105120

Tongchao Nan , Tianwei Hu , Zichen Wang , Jiangjiang Zhang , Jina Yin , Yifan Xie , Jichun Wu , Chunhui Lu

Fractures critically influence fluid flow and heat transfer in geothermal reservoirs, necessitating accurate and efficient simulation tools for resource management. Here we introduce ETH, an open-source Embedded Discrete Fracture Model (EDFM) module integrated with the MATLAB Reservoir Simulation Toolbox (MRST), enabling coupled hydrothermal simulations in both 2D and 3D fractured porous media. ETH extends prior EDFM frameworks by incorporating heat transfer and variable fluid properties, validated through four benchmarks ranging from analytical single-fracture cases to complex 3D fracture networks. Results demonstrate high accuracy (relative errors mostly <1 %) and computational efficiency, with 20–50 % reduced cost compared to FEM-based discrete fracture models. ETH’s modular design supports mesh/time convergence control and integration of additional physics, facilitating robust modeling of heterogeneous and anisotropic reservoirs. This tool advances accessible, high-fidelity simulation capabilities for geothermal reservoir characterization, development, and uncertainty quantification.

裂缝对地热储层的流体流动和换热具有重要影响，因此需要精确、高效的模拟工具来进行资源管理。在这里，我们介绍ETH，一个开源的嵌入式离散裂缝模型（EDFM）模块，集成了MATLAB油藏模拟工具箱（MRST），可以在二维和三维裂缝性多孔介质中耦合热液模拟。ETH扩展了之前的EDFM框架，结合了传热和可变流体特性，并通过从分析单裂缝案例到复杂3D裂缝网络的四个基准进行了验证。结果表明，与基于有限元的离散裂缝模型相比，该模型具有较高的精度（相对误差约为1%）和计算效率，成本降低了20 - 50%。ETH的模块化设计支持网格/时间收敛控制和额外物理的集成，促进了非均质和各向异性油藏的稳健建模。该工具为地热储层表征、开发和不确定性量化提供了方便、高保真的模拟能力。

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引用次数: 0

Establishing coastal water level magnitude-duration-frequency curves for infrastructure design 基础设施设计中沿海水位幅值-持续时间-频率曲线的建立

IF 4.2 2区环境科学与生态学 Q1 WATER RESOURCES

Advances in Water Resources

Pub Date : 2025-12-01 Epub Date: 2025-11-21 DOI: 10.1016/j.advwatres.2025.105179

Meraj Sohrabi , Hamed Moftakhari , Hamid Moradkhani

Extreme coastal floods are expected to be more frequent and/or intense in a warming climate. To protect both lives and assets, it is essential to continuously analyze the associated hazards and update engineering designs accordingly. While many studies have looked at how often and how high extreme sea levels get under various forcing conditions, much less attention has been paid to how long these extremes would last, which is just as important. The duration of elevated water levels can impact coastal areas in multiple ways, such as overwhelming drainage systems, bringing larger water volumes during prolonged events, and gradually weakening flood infrastructure over time. In this study, we address this overlooked aspect of extreme sea level events by introducing a framework for developing water level Magnitude-Duration-Frequency (MDF) curves using water level data from 217 coastal gauges distributed globally. Our analysis shows that the average water level difference between 1-hour and 24-hour durations is 0.8 meters for similar return periods, with a maximum difference of up to 3.63 meters for a 100-yr event. Additionally, we evaluate the impact of different event selection methods on the resulting MDF curves. Depending on the sampling methodology, differences in the developed MDF curves can reach up to half a meter across most studied regions. These curves can inform engineers and policymakers in developing more resilient flood mitigation strategies, refining risk assessments, and enhancing preparedness for future coastal hazards.

在气候变暖的情况下，极端的沿海洪水预计会更加频繁和/或强烈。为了保护生命和财产，必须不断分析相关的危害并相应地更新工程设计。虽然许多研究都关注了在各种强迫条件下极端海平面出现的频率和高度，但对这些极端海平面会持续多久的关注却少得多，这一点同样重要。持续的高水位会以多种方式影响沿海地区，比如淹没排水系统，在长时间的事件中带来更大的水量，并随着时间的推移逐渐削弱防洪基础设施。在这项研究中，我们通过引入一个框架，利用全球分布的217个沿海水位计的水位数据来开发水位幅度-持续时间-频率（MDF）曲线，解决了极端海平面事件中这一被忽视的方面。我们的分析表明，在类似的回归期，1小时和24小时的平均水位差为0.8米，100年事件的最大水位差可达3.63米。此外，我们评估了不同事件选择方法对所得MDF曲线的影响。根据采样方法的不同，在大多数研究地区，发育的MDF曲线的差异可达半米。这些曲线可以为工程师和政策制定者提供信息，帮助他们制定更有弹性的洪水缓解战略，改进风险评估，并加强对未来沿海灾害的准备。

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引用次数: 0