钙芒硝溶解重结晶过程中孔隙演化规律试验研究

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摘要采用μCT225KVFCB高精度显微CT试验系统，借助X射线衰减系数，从细观角度揭示溶解重结晶过程中钙芒硝的孔隙演化规律。研究结果表明：随着溶解重结晶的进行，钙芒硝孔隙率逐渐增大，总比表面积逐渐减小，而孔隙平均直径、通道比表面积和最大连通团先变大后变小。这些研究结论对钙芒硝原位水溶开采的实施和控制具有非常重要的意义。

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关键词 ：岩石力学, 钙芒硝, 溶解重结晶, 孔隙, 显微CT试验

Abstract：The glauberite samples are scanned at various dissolution-recrystallization times by using the high-precision micro-CT test system μCT225KVFCB；and the evolution laws of dissolution-recrystallization are studied from the meso-scopic perspective with X-ray attenuation coefficient. The results show that in the dissolution-recrystallization process，the porosity of glauberite increases gradually；the total specific surface area decreases gradually；the mean pore diameter，the specific surface area of passage and the largest passage increase at first and then decrease. These results have great significance for the implementation and control of the in-situ dissolution mining of glauberite deposits.

Key words： rock mechanics glauberite dissolution-recrystallization pore micro-CT test

收稿日期: 2010-06-18

引用本文:

刘中华1，2，胡耀青1，徐素国1，梁卫国1，杨栋1，赵阳升1. 钙芒硝溶解重结晶过程中孔隙演化规律试验研究[J]. 岩石力学与工程学报, 2011, 30(S1): 2743-2748.
LIU Zhonghua1，2，HU Yaoqing1，XU Suguo1，LIANG Weiguo1，YANG Dong1，ZHAO Yangsheng1. EXPERIMENTAL STUDY OF PORE EVOLUTION LAW DURING DISSOLUTION-RECRYSTALLIZATION FOR GLAUBERITE. , 2011, 30(S1): 2743-2748.

链接本文:

http://www.rockmech.org/CN/Y2011/V30/IS1/2743

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