Multi-objective inversion of permeability coefficient of earth-rockfill dams based on Pareto-hierarchical hybrid optimization algorithm

June 1, 2026Journal of Hydraulic Engineering

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Key Points

This research aims to enhance the inversion of permeability coefficients in earth-rockfill dams using a hybrid optimization algorithm.
Combined NSGA-II and MOPSO algorithms for optimization
Generated an SSA-XGBoost surrogate model to predict permeability coefficients
Utilized monitoring data on pressure head and leakage for the optimization process.
Achieved a 39% reduction in computation time while maintaining solution diversity
Improved pressure head objective value by 19.5% compared to NSGA-II and 17.7% compared to MOPSO
Enhanced leakage value objective by 72.3% compared to NSGA-II and 62.8% compared to MOPSO.

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Evaluates permeability coefficient in earth-rockfill dams, indicating improved predictive accuracy.

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唐晓松 et al. (2026) studied this question.

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