A standardized preparation method for rock specimens is required before conducting mechanical tests. Conventional sampling methods produce good results for good-quality rocks. However, during the preparation of standard specimens of rocks found in areas with complex geological conditions, such as dolomite rocks with well-developed fractures, the internal fissures are easily disturbed, leading to sample preparation failure. Inspired by the effectiveness of organic resin solution-based reinforcements in protecting bone and porcelain artifacts during archaeological excavations, this study developed a method to prepare specimens for dolomite infiltration reinforcement using an acrylic resin-in-acetone solution, whereby the mechanical parameters of the rock samples could be recovered upon successful sample preparation. Several tests conducted under optimized ratios of acrylic resin to acetone revealed that a solution mass fraction of 20% produced the best effect on the reinforcement of fractured dolomite from the sampling location and increased the success rate of rock sample preparation from 15 to 54%. The physical and mechanical properties of the specimens after immersion in pure acetone for 48 hours were unaffected. The proposed method provides a reference for rock sampling from areas with developed joint fissures.
Coring Method for Dolomite Rocks With Well-Developed Joint Fissures Based on Permeability Reinforcement
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Gao, Xinqiang, Ma, Zecheng, Kong, Chao, Wang, Hao, Lang, Zhijun, Fan, Haobo, Zhu, Yongquan, and Zhengguo Zhu. "Coring Method for Dolomite Rocks With Well-Developed Joint Fissures Based on Permeability Reinforcement." Petrophysics 63 (2022): 652–666. doi: https://doi.org/10.30632/PJV63N5-2022a6
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