| 酸性条件下岩石力学特性试验研究 |
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| 引用本文： | 刘小平,陈星明,刘传举,龙林健,李斌. 酸性条件下岩石力学特性试验研究[J]. 有色金属(矿山部分), 2021, 73(5): 113-118 |
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| 作者姓名： | 刘小平 陈星明 刘传举 龙林健 李斌 |
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| 作者单位： | 西南科技大学 环境与资源学院,西南科技大学 环境与资源学院,西南科技大学 环境与资源学院,西南科技大学 环境与资源学院,西南科技大学 环境与资源学院 |
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| 基金项目： | 国家自然科学基金资助项目（51904248）；西南科技大学研究生创新基金（20ycx0025） |
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| 摘 要： | 为了研究硫酸溶液对石灰岩细观结构以及宏观力学性质的变化影响,采用室内试验研究方法,对受酸腐蚀后的石灰岩进行波速测试试验和单轴压缩试验.试验结果表明:硫酸溶液中石灰岩水化作用以化学腐蚀为主,生成的CaSO4晶体部分会附着在试样表面;各组试样的纵波波速、单轴压缩强度以及弹性模量均随时间呈现下降—上升—下降的规律,而生成的C...
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| 关 键 词： | 酸性条件 纵波波速 单轴压缩强度 弹性模量 |
| 收稿时间： | 2021-05-07 |
| 修稿时间： | 2021-05-17 |
Experimental study on mechanical properties of rock under acidic conditions |
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| LIU Xiaoping,CHEN Xingming,LIU Chuanju,LONG Linjian and LI Bin. Experimental study on mechanical properties of rock under acidic conditions[J]. , 2021, 73(5): 113-118 |
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| Authors: | LIU Xiaoping CHEN Xingming LIU Chuanju LONG Linjian LI Bin |
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| Affiliation: | School of Resources and Environment, Southwest University of Science and Technology, Mianyang Sichuan 621010, China),School of Resources and Environment, Southwest University of Science and Technology, Mianyang Sichuan 621010, China),School of Resources and Environment, Southwest University of Science and Technology, Mianyang Sichuan 621010, China),School of Resources and Environment, Southwest University of Science and Technology, Mianyang Sichuan 621010, China),School of Resources and Environment, Southwest University of Science and Technology, Mianyang Sichuan 621010, China) |
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| Abstract: | In order to study the changes of sulfuric acid solution on the fine structure and macroscopic mechanical properties of limestone, wave velocity test and uniaxial compression test were conducted on the acid corroded limestone by indoor experimental research method. The test results show that: the hydration of limestone in sulfuric acid solution is mainly chemical corrosion, and the CaSO4 crystals generated will partially adhere to the surface of the specimens; the longitudinal wave velocity, uniaxial compression strength and elastic modulus of each group of specimens show a decreasing-rising-decreasing pattern with time, and the CaSO4 crystals generated are the main reason for this pattern. The acidic environment will further develop the internal fissures in the rock, causing the internal structure of the rock to be loosened, and under the action of external force, this part of the internal structure will close more easily, resulting in the increase of deformation of the specimens and the deterioration of resistance to deformation, which is manifested in the macroscopic decrease of uniaxial strength and elastic modulus of the rock. |
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| Keywords: | acidic conditions longitudinal wave velocity uniaxial compression strength elastic Modulus |
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