Damage Features of Altered Rock Subjected to Drying-Wetting Cycles
An abandoned open pit was used as a tailing pond for a concentrating mill, with the height of the water surface subject to cyclic fluctuation. The effects of drying and wetting cycles on the mechanical parameters of pit rock were tested. Interactions of the hydrochemical environment, due to the diss...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/5170832 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832561278329028608 |
|---|---|
| author | Zhe Qin Xuxin Chen Houli Fu |
| author_facet | Zhe Qin Xuxin Chen Houli Fu |
| author_sort | Zhe Qin |
| collection | DOAJ |
| description | An abandoned open pit was used as a tailing pond for a concentrating mill, with the height of the water surface subject to cyclic fluctuation. The effects of drying and wetting cycles on the mechanical parameters of pit rock were tested. Interactions of the hydrochemical environment, due to the dissolution of tailings, and drying and wetting cycles caused degradation of mechanical properties in the rock. It was found that uniaxial compressive strength and elastic modulus decreased as the number of dry/wet cycles increased. The quantitative relationship between the mechanical parameters and the number of dry/wet cycles was indicated by an exponential function. In addition to uniaxial testing, cohesion and the internal friction angle were determined through triaxial testing. The shear strength index deteriorated under the drying and wetting cycles. The hydrochemical environment also negatively affected the mechanical parameters. Potential effects between drying and wetting cycles and slope displacement were analyzed by on-site monitoring. The results show that the displacement increased because of the drying and wetting cycles, which may lead to sudden failure of the slope. |
| format | Article |
| id | doaj-art-3f1c0ac398b34d149ab13db3613de966 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-3f1c0ac398b34d149ab13db3613de9662025-02-03T01:25:27ZengWileyAdvances in Civil Engineering1687-80861687-80942018-01-01201810.1155/2018/51708325170832Damage Features of Altered Rock Subjected to Drying-Wetting CyclesZhe Qin0Xuxin Chen1Houli Fu2Shandong Province Key Laboratory of Disaster Prevention and Mitigation, School of Civil Engineering and Architecture Qingdao, Shandong University of Science and Technology, Shandong 266590, ChinaShandong Province Key Laboratory of Disaster Prevention and Mitigation, School of Civil Engineering and Architecture Qingdao, Shandong University of Science and Technology, Shandong 266590, ChinaSchool of Civil Engineering and Architecture, Linyi University, Linyi 276000, ChinaAn abandoned open pit was used as a tailing pond for a concentrating mill, with the height of the water surface subject to cyclic fluctuation. The effects of drying and wetting cycles on the mechanical parameters of pit rock were tested. Interactions of the hydrochemical environment, due to the dissolution of tailings, and drying and wetting cycles caused degradation of mechanical properties in the rock. It was found that uniaxial compressive strength and elastic modulus decreased as the number of dry/wet cycles increased. The quantitative relationship between the mechanical parameters and the number of dry/wet cycles was indicated by an exponential function. In addition to uniaxial testing, cohesion and the internal friction angle were determined through triaxial testing. The shear strength index deteriorated under the drying and wetting cycles. The hydrochemical environment also negatively affected the mechanical parameters. Potential effects between drying and wetting cycles and slope displacement were analyzed by on-site monitoring. The results show that the displacement increased because of the drying and wetting cycles, which may lead to sudden failure of the slope.http://dx.doi.org/10.1155/2018/5170832 |
| spellingShingle | Zhe Qin Xuxin Chen Houli Fu Damage Features of Altered Rock Subjected to Drying-Wetting Cycles Advances in Civil Engineering |
| title | Damage Features of Altered Rock Subjected to Drying-Wetting Cycles |
| title_full | Damage Features of Altered Rock Subjected to Drying-Wetting Cycles |
| title_fullStr | Damage Features of Altered Rock Subjected to Drying-Wetting Cycles |
| title_full_unstemmed | Damage Features of Altered Rock Subjected to Drying-Wetting Cycles |
| title_short | Damage Features of Altered Rock Subjected to Drying-Wetting Cycles |
| title_sort | damage features of altered rock subjected to drying wetting cycles |
| url | http://dx.doi.org/10.1155/2018/5170832 |
| work_keys_str_mv | AT zheqin damagefeaturesofalteredrocksubjectedtodryingwettingcycles AT xuxinchen damagefeaturesofalteredrocksubjectedtodryingwettingcycles AT houlifu damagefeaturesofalteredrocksubjectedtodryingwettingcycles |