Study on mechanical properties and acoustic emission evolution law of raw coal in water-mechanical coupling environment.

Sci Rep · 2025 · PMC12615819 · PMID 41233448

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a clear trendno p-value reported

A clear trend is observed: both the compressive strength and elastic modulus exhibit a decreasing tendency with prolonged immersion time.

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an increasing trendno p-value reported

The ring-down count begins to rise, and the cumulative curve shows an increasing trend, indicating gradually intensifying micro-fracturing activities.

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