Experimental study on acid dissolution damage characteristics of bedded limestone
In southwest China, carbonate rocks are widely distributed. It has unique dissolution features which bring a lot of resistance to engineering constructions. In order to explore the dissolution damage regular of layered carbonate rocks in acidic water, a self-made flow dissolution system was used to...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Office of Hydrogeology & Engineering Geology
2023-11-01
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| Series: | Shuiwen dizhi gongcheng dizhi |
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| Online Access: | https://www.swdzgcdz.com/en/article/doi/10.16030/j.cnki.issn.1000-3665.202211077 |
| _version_ | 1797404653346881536 |
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| author | Zongqin WU Shuangying ZUO Lu WANG Benyun LI Jing LIU |
| author_facet | Zongqin WU Shuangying ZUO Lu WANG Benyun LI Jing LIU |
| author_sort | Zongqin WU |
| collection | DOAJ |
| description | In southwest China, carbonate rocks are widely distributed. It has unique dissolution features which bring a lot of resistance to engineering constructions. In order to explore the dissolution damage regular of layered carbonate rocks in acidic water, a self-made flow dissolution system was used to conduct laboratory dissolution tests on limestone cores under four different conditions. The mass loss, the change of p-wave velocity, the mass concentration of Ca2+ and Mg2+ and the morphology of the core surface were obtained. Mass loss rate after dissolution of layered limestone was used to define the damage variation. Through multivariate statistical regression analysis, the relationship between four different arguments (bedding dip Angle, pH, velocity of flow, dissolution time) and dissolution damage variation was established. The results show that the dissolution damage of layered limestone has a good mathematical relationship between the four different arguments. The following conclusions can be drawn from the analysis: The time has a significant effect on the dissolution damage of bedded limestone, followed by the velocity and pH. Under the same acidic environment, the dissolution effect shows a rule of 90° >0° >45° >30° >75° >15° >60° for limestone with different bedding inclination angles. The bedded angle has less effect on the dissolution of limestone than other factors, but plays a decisive role in the surface dissolution morphology of rock samples. The results of this study can provide some reference for engineering practice and geological disaster control in limestone areas. |
| first_indexed | 2024-03-09T02:58:09Z |
| format | Article |
| id | doaj.art-8a842f4b6ac842bda11dd0c9f907a698 |
| institution | Directory Open Access Journal |
| issn | 1000-3665 |
| language | zho |
| last_indexed | 2024-03-09T02:58:09Z |
| publishDate | 2023-11-01 |
| publisher | Editorial Office of Hydrogeology & Engineering Geology |
| record_format | Article |
| series | Shuiwen dizhi gongcheng dizhi |
| spelling | doaj.art-8a842f4b6ac842bda11dd0c9f907a6982023-12-05T01:09:48ZzhoEditorial Office of Hydrogeology & Engineering GeologyShuiwen dizhi gongcheng dizhi1000-36652023-11-0150619320310.16030/j.cnki.issn.1000-3665.202211077202211077Experimental study on acid dissolution damage characteristics of bedded limestoneZongqin WU0Shuangying ZUO1Lu WANG2Benyun LI3Jing LIU4College of Resources and Environmental Engineering, Guizhou University, Guiyang, Guizhou 550025, ChinaCollege of Resources and Environmental Engineering, Guizhou University, Guiyang, Guizhou 550025, ChinaGuizhou Transportation Planning Survey and Design Institute Co. Ltd., Guiyang, Guizhou 550081, ChinaGuizhou Transportation Planning Survey and Design Institute Co. Ltd., Guiyang, Guizhou 550081, ChinaCollege of Resources and Environmental Engineering, Guizhou University, Guiyang, Guizhou 550025, ChinaIn southwest China, carbonate rocks are widely distributed. It has unique dissolution features which bring a lot of resistance to engineering constructions. In order to explore the dissolution damage regular of layered carbonate rocks in acidic water, a self-made flow dissolution system was used to conduct laboratory dissolution tests on limestone cores under four different conditions. The mass loss, the change of p-wave velocity, the mass concentration of Ca2+ and Mg2+ and the morphology of the core surface were obtained. Mass loss rate after dissolution of layered limestone was used to define the damage variation. Through multivariate statistical regression analysis, the relationship between four different arguments (bedding dip Angle, pH, velocity of flow, dissolution time) and dissolution damage variation was established. The results show that the dissolution damage of layered limestone has a good mathematical relationship between the four different arguments. The following conclusions can be drawn from the analysis: The time has a significant effect on the dissolution damage of bedded limestone, followed by the velocity and pH. Under the same acidic environment, the dissolution effect shows a rule of 90° >0° >45° >30° >75° >15° >60° for limestone with different bedding inclination angles. The bedded angle has less effect on the dissolution of limestone than other factors, but plays a decisive role in the surface dissolution morphology of rock samples. The results of this study can provide some reference for engineering practice and geological disaster control in limestone areas.https://www.swdzgcdz.com/en/article/doi/10.16030/j.cnki.issn.1000-3665.202211077bedded limestoneacid corrosionlongitudinal wave velocity of rockdissolution damagedissolution damage variation |
| spellingShingle | Zongqin WU Shuangying ZUO Lu WANG Benyun LI Jing LIU Experimental study on acid dissolution damage characteristics of bedded limestone Shuiwen dizhi gongcheng dizhi bedded limestone acid corrosion longitudinal wave velocity of rock dissolution damage dissolution damage variation |
| title | Experimental study on acid dissolution damage characteristics of bedded limestone |
| title_full | Experimental study on acid dissolution damage characteristics of bedded limestone |
| title_fullStr | Experimental study on acid dissolution damage characteristics of bedded limestone |
| title_full_unstemmed | Experimental study on acid dissolution damage characteristics of bedded limestone |
| title_short | Experimental study on acid dissolution damage characteristics of bedded limestone |
| title_sort | experimental study on acid dissolution damage characteristics of bedded limestone |
| topic | bedded limestone acid corrosion longitudinal wave velocity of rock dissolution damage dissolution damage variation |
| url | https://www.swdzgcdz.com/en/article/doi/10.16030/j.cnki.issn.1000-3665.202211077 |
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