Mechanical behavior and meso-degradation mechanism of cemented paste backfill under the coupled effect of disturbance damage and dry-wet cycles.

(4) With the coupled behavior of disturbance damage and dry-wet cycles increasing, boundary energy, parallel bond strain energy and linear strain energy gradually decrease, energy absorption and energy storage capacity of CPB samples decrease, while the friction energy shows an increasing trend.

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With increasing dry-wet cycles, the total number of pre-peak, peak and post-peak microcracks basically shows a decreasing trend.

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