中文摘要：

采用μCT225KVFCB型高精度显微CT试验系统,对钙芒硝盐岩试样进行不同溶蚀时间的显微CT扫描,并根据整个溶蚀过程中射线的衰减系数变化,从细观的角度揭示钙芒硝盐岩的溶蚀规律。研究结果表明：随着溶蚀时间的持续,钙芒硝盐岩的密度损伤、孔隙率逐渐增大;随着孔隙率的增大,总比表面积逐渐减小且呈线性下降趋势,而通道比表面积的变化则比较特殊,表现为先增大后减小。研究结果对研究钙芒硝矿床原位溶浸开采的产出率、生产效率和地面沉降具有非常重要的意义。

英文摘要：

The glauberite salt rock samples are scanned at various corrosion time by the μCT225KVFCB-type high-precision micro-CT test system. According to the different ray attenuation coefficient changes in the whole corrosion process,the corrosion damage law of glauberite salt rock is studied from the perspective of meso-structure. The research results show that the density damage and pore ratio of the glauberite salt rock samples increase gradually,but the total specific surface area declines linearly with corrosion time. Meanwhile,the change in specific surface area of corrosion route way is particular,and it increases at first and then decreases. These research results have a very important significance for studying the output capacity,production efficiency and ground settlement of in-situ corrosion mining of glauberite salt rock deposit.