Research on Fracture and Energy Evolution of Rock Containing Natural Fractures under Cyclic Loading Condition
For rock engineering in cold regions, the naturally fractured rock is susceptible to repeated freeze-thaw (F-T) weathering, coupled fatigue conditions of freeze-thaw (F-T), and stress disturbance act on rock mass, which can lead to the instability of rock engineering and even occurrence of geologica...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
|
| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2021/9980378 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832550813640163328 |
|---|---|
| author | Xueliang Li Yu Wang Shuo Xu Haonan Yang Bo Li |
| author_facet | Xueliang Li Yu Wang Shuo Xu Haonan Yang Bo Li |
| author_sort | Xueliang Li |
| collection | DOAJ |
| description | For rock engineering in cold regions, the naturally fractured rock is susceptible to repeated freeze-thaw (F-T) weathering, coupled fatigue conditions of freeze-thaw (F-T), and stress disturbance act on rock mass, which can lead to the instability of rock engineering and even occurrence of geological hazards. Knowledge of how natural fracture affects the overall fracture evolution of freeze-thawed rock is crucial to rock mass stability. Laboratory multilevel cyclic loading tests are conducted to reveal the fatigue behavior and energy evolution for naturally fractured marble, as well as the influence of natural fracture volume on fracture evolution. The test results show that the preexisting natural fracture impacts fatigue strength, lifetime, and energy dissipation. The dissipated energy is correlated to all kinds of natural fracture (i.e., opening-mode, closing-mode, and filling-mode), and it decreases with the increase of the total natural fracture volume. The dissipated energy presents a first slow and then faster pattern as the cycle number grows. Compared with newly formed cracks, the proportion of energy consumed by stimulating natural cracks is smaller. |
| format | Article |
| id | doaj-art-0e31b5cbf2ca4afba5badc16fcee64cf |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-0e31b5cbf2ca4afba5badc16fcee64cf2025-02-03T06:05:43ZengWileyGeofluids1468-81151468-81232021-01-01202110.1155/2021/99803789980378Research on Fracture and Energy Evolution of Rock Containing Natural Fractures under Cyclic Loading ConditionXueliang Li0Yu Wang1Shuo Xu2Haonan Yang3Bo Li4China Coal Science and Technology Ecological Environment Technology Co., Ltd., Beijing 100013, ChinaUniversity of Science & Technology Beijing, Beijing 100083, ChinaUniversity of Science & Technology Beijing, Beijing 100083, ChinaUniversity of Science & Technology Beijing, Beijing 100083, ChinaUniversity of Science & Technology Beijing, Beijing 100083, ChinaFor rock engineering in cold regions, the naturally fractured rock is susceptible to repeated freeze-thaw (F-T) weathering, coupled fatigue conditions of freeze-thaw (F-T), and stress disturbance act on rock mass, which can lead to the instability of rock engineering and even occurrence of geological hazards. Knowledge of how natural fracture affects the overall fracture evolution of freeze-thawed rock is crucial to rock mass stability. Laboratory multilevel cyclic loading tests are conducted to reveal the fatigue behavior and energy evolution for naturally fractured marble, as well as the influence of natural fracture volume on fracture evolution. The test results show that the preexisting natural fracture impacts fatigue strength, lifetime, and energy dissipation. The dissipated energy is correlated to all kinds of natural fracture (i.e., opening-mode, closing-mode, and filling-mode), and it decreases with the increase of the total natural fracture volume. The dissipated energy presents a first slow and then faster pattern as the cycle number grows. Compared with newly formed cracks, the proportion of energy consumed by stimulating natural cracks is smaller.http://dx.doi.org/10.1155/2021/9980378 |
| spellingShingle | Xueliang Li Yu Wang Shuo Xu Haonan Yang Bo Li Research on Fracture and Energy Evolution of Rock Containing Natural Fractures under Cyclic Loading Condition Geofluids |
| title | Research on Fracture and Energy Evolution of Rock Containing Natural Fractures under Cyclic Loading Condition |
| title_full | Research on Fracture and Energy Evolution of Rock Containing Natural Fractures under Cyclic Loading Condition |
| title_fullStr | Research on Fracture and Energy Evolution of Rock Containing Natural Fractures under Cyclic Loading Condition |
| title_full_unstemmed | Research on Fracture and Energy Evolution of Rock Containing Natural Fractures under Cyclic Loading Condition |
| title_short | Research on Fracture and Energy Evolution of Rock Containing Natural Fractures under Cyclic Loading Condition |
| title_sort | research on fracture and energy evolution of rock containing natural fractures under cyclic loading condition |
| url | http://dx.doi.org/10.1155/2021/9980378 |
| work_keys_str_mv | AT xueliangli researchonfractureandenergyevolutionofrockcontainingnaturalfracturesundercyclicloadingcondition AT yuwang researchonfractureandenergyevolutionofrockcontainingnaturalfracturesundercyclicloadingcondition AT shuoxu researchonfractureandenergyevolutionofrockcontainingnaturalfracturesundercyclicloadingcondition AT haonanyang researchonfractureandenergyevolutionofrockcontainingnaturalfracturesundercyclicloadingcondition AT boli researchonfractureandenergyevolutionofrockcontainingnaturalfracturesundercyclicloadingcondition |