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To evaluate the long-term environmental safety and sustainable remediation effect of decommissioning projects of uranium mine geological exploration facilities in southern mountainous regions, a decommissioned uranium mine exploration facility was selected as the research object. Based on the field monitoring and engineering inspection data spanning eight consecutive years from 2018 to 2025, this paper systematically analyzed the temporal and spatial variation rules of gamma radiation dose rate, radon exhalation rate, as well as radionuclide contents in surface water and soil. The results reveal that due to rainfall erosion and overburden soil loss, the gamma radiation dose rate and radon exhalation rate of waste rock piles were obviously beyond standard limits during 2018 to the first half of 2019. After carrying out backfilling with overburden soil thicker than 80 cm, structural reinforcement and natural vegetation restoration in 2019, core radiation indicators dropped rapidly and have steadily complied with the provisions of Technical Specification for Monitoring and Surveillance of Decommissioning Project of Uranium Prospecting Facilities(DB45/T 2617—2022) and relevant national standards, proving that the regional radiation environment is safely controllable in the long term. Radon exhalation rate presents higher sensitivity to the integrity of covering layer, and can be taken as the preferred early warning index in long-term supervision. A closed-loop management mechanism of "monitoring-evaluation-maintenance" was formed in this study, and a long-term supervision system supported by fiscal guarantee, professional construction teams and local standard guidance was established. The research results can offer practical references and technical basis for long-term environmental management of analogous decommissioned uranium mine exploration facilities in southern mountainous areas of China.
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Basic Information:
DOI：10.13426/j.cnki.yky.2026.04.22
China Classification Code:TL943;X591
Citation Information:
[1]WU Guohui,LUO Jizun,WU Jiacheng ,et al.Effectiveness of Long-term Supervision and Management Mode for Decommissioned Uranium Mine Exploration Facilities in Mountainous Areas of Southern China[J].Uranium Mining and Metallurgy().DOI:10.13426/j.cnki.yky.2026.04.22.
Fund Information:
广西核勘探设施退役整治竣工工程长期监护与监测(桂地矿核[2025]4号)
2026-06-11
2026-06-11
2026-06-11