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<p>Thermal-moisture cycles induce damage to the soil cover of uranium tailings ponds and degrade their radon-resistant performance. In this study, laboratory wet-dry-freeze–thaw (WD-FT) cycles tests were conducted, surface cracking of the soil cover was quantified using digital image processing, and radon exhalation rates of the models were measured by the local static method. The SEM results showed that cumulative damage inside the soil caused negative growth of surface cracks. After taking the absolute value of crack changes, the degree of surface cracking increased monotonically, and the correlation coefficient with radon exhalation was greater than 0.95.</p>

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Analysis of radon exhalation from uranium tailings reservoir based on image recognition of surface cracks under wet–dry–freeze–thaw cycles

  • 期刊论文

  • 发表日期：

    2026年8月3日

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  • Xingwang Dai,
  • Chengyan Yan,
  • Yourui Jiang,
  • Zhengxin Wu,
  • Kai Liu,
  • Yong Liu,
  • Zhenghua Xu

摘要

Thermal-moisture cycles induce damage to the soil cover of uranium tailings ponds and degrade their radon-resistant performance. In this study, laboratory wet-dry-freeze–thaw (WD-FT) cycles tests were conducted, surface cracking of the soil cover was quantified using digital image processing, and radon exhalation rates of the models were measured by the local static method. The SEM results showed that cumulative damage inside the soil caused negative growth of surface cracks. After taking the absolute value of crack changes, the degree of surface cracking increased monotonically, and the correlation coefficient with radon exhalation was greater than 0.95.