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Perspective | Open Access

Numerical simulation and optimization design of complex underground fracture network

Department of Earth Sciences, Uppsala University, Uppsala 75310, Sweden
Department of Earth Sciences, The University of Hong Kong, Hong Kong 000000, P. R. China
State Key Laboratory of Lithospheric and Environmental Coevolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, P. R. China
Physical Science and Engineering Division (PSE), Computational Transport Phenomena Laboratory, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
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Abstract

Understanding the complex behavior of fractured rock systems is critical for applications in energy development, geological sequestration, and tunnel construction. Microscale fracture surface morphology influences flow and mechanical behaviors, while upscaling frameworks. Despite progress in hydro-mechanical and thermo-hydro-mechanical coupling models, two-way mechanical-chemical interactions remain underexplored. Discrete fracture networks offer a robust statistical framework for modeling subsurface fracture systems. Advances in machine learning have accelerated the simulation and optimization of fractured geothermal systems, addressing the computational limitations of high-fidelity models. These methods support multi-objective design, enhance life cycle assessments, and provide insights into optimal geothermal management strategies. Fractured rocks serve as preferential pathways for fluid flow and heat transport, significantly influencing permeability and mechanical stability. However, the inherent complexity of coupled thermo-hydro-mechanical-chemical processes in these systems presents major challenges. Nonlinear fracture mechanics, stress perturbations, and chemical interactions drive dynamic changes in fracture connectivity and permeability, further complicated by recursive feedback mechanisms. By integrating numerical tools, machine learning techniques, and advanced discrete fracture network models, the fractured rock system could be optimized and clearly analyzed.

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Advances in Geo-Energy Research
Pages 1-3
Cite this article:
Jiang C, Chen G, Zhu W, et al. Numerical simulation and optimization design of complex underground fracture network. Advances in Geo-Energy Research, 2025, 16(1): 1-3. https://doi.org/10.46690/ager.2025.04.01

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Received: 18 December 2024
Revised: 30 December 2024
Accepted: 09 January 2025
Published: 11 January 2025
© The Author(s) 2025.

This article is distributed under the terms and conditions of the Creative Commons Attribution (CC BY-NC-ND) license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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