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<p>As terrestrial mineral deposits become increasingly depleted due to intensive exploitation, attention has shifted to the deep sea, which also contains abundant resources. Electrical resistance tomography (ERT), a process tomography technique, demonstrates strong potential for monitoring two-phase flow parameters. Consequently, a set of ERT technologies suitable for deep-sea mining (DSM) has been developed through research on excitation methods, electrode counts, imaging algorithms, and other factors. In this study, a two-dimensional model is established using COMSOL software, and MATLAB is employed to simulate ore particles under different conditions, analyzing their imaging performance. Simulation results indicate that ERT technology exhibits geometric sensitivity issues. Circular particles are more suitable in this case, as larger particles produce better imaging results compared with smaller ones, and imaging near the pipe boundary is better than at the center of the pipe. This method provides a technical reference for studying the solid–liquid two-phase flow in DSM risers.</p>

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Simulation of Mineral Ore Concentration in Deep-Sea Mining Risers Using the Electrical Resistance Tomography Technology

  • 期刊论文

  • 发表日期：

    2026年7月8日

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  • Wenbin Ma,
  • Bo Zhou

摘要

As terrestrial mineral deposits become increasingly depleted due to intensive exploitation, attention has shifted to the deep sea, which also contains abundant resources. Electrical resistance tomography (ERT), a process tomography technique, demonstrates strong potential for monitoring two-phase flow parameters. Consequently, a set of ERT technologies suitable for deep-sea mining (DSM) has been developed through research on excitation methods, electrode counts, imaging algorithms, and other factors. In this study, a two-dimensional model is established using COMSOL software, and MATLAB is employed to simulate ore particles under different conditions, analyzing their imaging performance. Simulation results indicate that ERT technology exhibits geometric sensitivity issues. Circular particles are more suitable in this case, as larger particles produce better imaging results compared with smaller ones, and imaging near the pipe boundary is better than at the center of the pipe. This method provides a technical reference for studying the solid–liquid two-phase flow in DSM risers.