通过故障区耦合耦合无功传输的建模：一项重要的评论。,Environmental Engineering Science

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通过故障区耦合耦合无功传输的建模：一项重要的评论。
Environmental Engineering Science ( IF 1.8 ) Pub Date : 2021-03-17 , DOI: 10.1089/ees.2020.0413
Vivek Patil ₁ , Brian J. McPherson _{1,

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Affiliation

断层带显着影响地下流体的运移，并且可以是对局部以及区域水文地质的重要控制。因此，了解断层孔隙度/渗透率的演变对于许多工程应用（例如地质碳固存，增强的地热系统，地下水修复等）以及地质研究（例如沉积物成岩作用，地震活动，热液矿石沉积， ETC。）。断层带的高度非均质孔隙结构，以及断层带可穿过的广泛的水文地球化学非均质性，使导管断层带成为动态的反应性输运环境，可能非常复杂，无法准确建模。在本文中，我们对建模通过断层带的反应流体的可能方式进行了严格的回顾，特别是从化学驱动断层的“自密封”或“自增强”的角度来看。在深入研究文献的基础上，我们考虑了与不同概念模型（例如，断裂带作为裂缝的网络或损坏区域和断裂核心的组合），建模方法（例如，多个连续体，离散裂缝网络，孔隙尺度模型）和水/岩相互作用的动力学。探索与维度（例如，一维与二维）和无量纲的Damköhler数有关的固有建模方面。此外，在审查中，我们以犹他州中部的Little Grand Wash断层带为例。最后，

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Modeling Coupled Reactive Transport Through Fault Zones: A Critical Review

Fault zones significantly influence the migration of fluids in the subsurface and can be important controls on the local as well as regional hydrogeology. Hence, understanding the evolution of fault porosity/permeability is critical for many engineering applications (like geologic carbon sequestration, enhanced geothermal systems, groundwater remediation, etc.), as well as geological studies (like sediment diagenesis, seismic activities, hydrothermal ore deposition, etc.). The highly heterogeneous pore structure of fault zones along with the wide range of hydrogeochemical heterogeneity that a fault zone can cut through make conduit fault zones a dynamic reactive transport environment that can be highly complex to accurately model. In this article, we present a critical review of the possible ways of modeling reactive fluid flow through fault zones, particularly from the perspective of chemically driven “self-sealing” or “self-enhancing” of fault zones. Along with an in-depth review of the literature, we consider key issues related to different conceptual models (e.g., fault zone as a network of fractures or as a combination of damaged zone and fault core), modeling approaches (e.g., multiple continua, discrete fracture networks, pore-scale models), and kinetics of water/rock interactions. Inherent modeling aspects related to dimensionality (e.g., one-dimensional vs. two-dimensional) and the dimensionless Damköhler number are explored. Moreover, we use a case study of the Little Grand Wash Fault zone from central Utah as an example in the review. Finally, critical aspects of reactive transport modeling like multiscale approaches and chemomechanical coupling are also addressed in the context of fault zones.

更新日期：2021-03-21

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