Preparation and radon exhalation characteristics of fracture granite similar materials in Beishan underground research laboratory

IF 10.6 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL Journal of Hazardous Materials Pub Date : 2025-04-05 Epub Date: 2025-01-09 DOI:10.1016/j.jhazmat.2025.137121

Yuhang Wang , Hong Wang , Hui Ling , Changshou Hong , Xiangshuai Wang , Wenjun Lu , Qingmin Zhang , Ziqi Cai

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Abstract

The mechanism of radon exhalation from surrounding rock fracture has important guiding significance for radon prevention and control in underground research laboratories. The optimal ratio scheme of similar materials in the granite surrounding rock of Beishan underground laboratory was obtained by orthogonal test. The radon exhalation characteristics of fractured rock samples under dry and saturated conditions were obtained by using 10 standard joint roughness coefficient (JRC) curves. The radon exhalation rate of the dry sample and the saturated sample is linearly correlated with the JRC grade, and the radon exhalation rate of the dry sample is 82.65 % higher than that of the saturated sample. There was a good correlation between fracture structure parameters (

σ_{i}

, SF, D0) and radon precipitation in fractured rock mass, which is helpful to reveal the mechanism of radon exhalation from fractured rock mass.

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北山地下实验室裂隙花岗岩类材料制备及氡析出特征

研究围岩裂隙出氡机理对地下科研实验室氡防治具有重要的指导意义。通过正交试验，确定了北山地下实验室花岗岩围岩中相似材料的最佳配比方案。采用10条标准节理粗糙系数（JRC）曲线，获得了裂隙岩样在干燥和饱和条件下的氡析出特征。干样和饱和样的氡呼出率与JRC品位呈线性相关，干样的氡呼出率比饱和样高82.65%。裂隙结构参数（σiσi、SF、D0）与裂隙岩体氡析出有较好的相关性，有助于揭示裂隙岩体氡析出的机理。

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来源期刊

Journal of Hazardous Materials 工程技术-工程：环境

CiteScore

25.40

自引率

5.90%

发文量

3059

审稿时长

58 days

期刊介绍： The Journal of Hazardous Materials serves as a global platform for promoting cutting-edge research in the field of Environmental Science and Engineering. Our publication features a wide range of articles, including full-length research papers, review articles, and perspectives, with the aim of enhancing our understanding of the dangers and risks associated with various materials concerning public health and the environment. It is important to note that the term "environmental contaminants" refers specifically to substances that pose hazardous effects through contamination, while excluding those that do not have such impacts on the environment or human health. Moreover, we emphasize the distinction between wastes and hazardous materials in order to provide further clarity on the scope of the journal. We have a keen interest in exploring specific compounds and microbial agents that have adverse effects on the environment.