Degradation Characteristics and Mechanism of Black Sandy Dolomite with Fluid Added in a Mechanical Test
Sandy dolomite, being a soluble rock, is prone to dissolution and erosion caused by groundwater, leading to the formation of underground caves and fractures. This may result in geological disasters such as ground subsidence and collapse. In this paper, the changes and mechanical properties of black...
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| Format: | Article |
| Language: | English |
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Wiley
2023-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2023/6197047 |
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| author | Xin Liao Qi Xu Sixiang Ling Angran Tian Qiang Tang |
| author_facet | Xin Liao Qi Xu Sixiang Ling Angran Tian Qiang Tang |
| author_sort | Xin Liao |
| collection | DOAJ |
| description | Sandy dolomite, being a soluble rock, is prone to dissolution and erosion caused by groundwater, leading to the formation of underground caves and fractures. This may result in geological disasters such as ground subsidence and collapse. In this paper, the changes and mechanical properties of black sandy dolomite after hydrochemistry are studied. A semi-immersion test with different concentrations of iron sulfate solution was carried out to simulate the water-rock interaction in different water environments. After that, scanning electron microscope (SEM) results could reflect the dissolution and pore development of rock by the effect of water-rock interaction from the microscopic. Water-rock interaction enlarges cracks in rocks and dissolves pyrite, carbonate minerals, and other components, reducing the cementation between particles. The change in the mechanical properties of black sandy dolomite under water-rock chemical interaction was revealed by uniaxial compression test. The mechanical properties of the samples exhibit varying degrees of deterioration, with strain increased ranging from 4.96 to 29.58%. The brittleness index modified (BIM) values for each sample ranged from 5.20 to 6.20%, all of which are larger than 4.70% in the natural state. |
| format | Article |
| id | doaj-art-c1afb103ce9f443d9e1996da54d437e8 |
| institution | DOAJ |
| issn | 1468-8123 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-c1afb103ce9f443d9e1996da54d437e82025-08-20T03:05:03ZengWileyGeofluids1468-81232023-01-01202310.1155/2023/6197047Degradation Characteristics and Mechanism of Black Sandy Dolomite with Fluid Added in a Mechanical TestXin Liao0Qi Xu1Sixiang Ling2Angran Tian3Qiang Tang4Faculty of Geosciences and Environmental EngineeringSchool of Rail TransportationFaculty of Geosciences and Environmental EngineeringSchool of Rail TransportationSchool of Rail TransportationSandy dolomite, being a soluble rock, is prone to dissolution and erosion caused by groundwater, leading to the formation of underground caves and fractures. This may result in geological disasters such as ground subsidence and collapse. In this paper, the changes and mechanical properties of black sandy dolomite after hydrochemistry are studied. A semi-immersion test with different concentrations of iron sulfate solution was carried out to simulate the water-rock interaction in different water environments. After that, scanning electron microscope (SEM) results could reflect the dissolution and pore development of rock by the effect of water-rock interaction from the microscopic. Water-rock interaction enlarges cracks in rocks and dissolves pyrite, carbonate minerals, and other components, reducing the cementation between particles. The change in the mechanical properties of black sandy dolomite under water-rock chemical interaction was revealed by uniaxial compression test. The mechanical properties of the samples exhibit varying degrees of deterioration, with strain increased ranging from 4.96 to 29.58%. The brittleness index modified (BIM) values for each sample ranged from 5.20 to 6.20%, all of which are larger than 4.70% in the natural state.http://dx.doi.org/10.1155/2023/6197047 |
| spellingShingle | Xin Liao Qi Xu Sixiang Ling Angran Tian Qiang Tang Degradation Characteristics and Mechanism of Black Sandy Dolomite with Fluid Added in a Mechanical Test Geofluids |
| title | Degradation Characteristics and Mechanism of Black Sandy Dolomite with Fluid Added in a Mechanical Test |
| title_full | Degradation Characteristics and Mechanism of Black Sandy Dolomite with Fluid Added in a Mechanical Test |
| title_fullStr | Degradation Characteristics and Mechanism of Black Sandy Dolomite with Fluid Added in a Mechanical Test |
| title_full_unstemmed | Degradation Characteristics and Mechanism of Black Sandy Dolomite with Fluid Added in a Mechanical Test |
| title_short | Degradation Characteristics and Mechanism of Black Sandy Dolomite with Fluid Added in a Mechanical Test |
| title_sort | degradation characteristics and mechanism of black sandy dolomite with fluid added in a mechanical test |
| url | http://dx.doi.org/10.1155/2023/6197047 |
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