Investigation of the rock failure effect on overcoring stress relief test in deep hard rock
文献类型：期刊论文
| 作者 | Zheng, Minzong1; Li, Shaojun1; Xu, Huaisheng1; Liang, Zhiqiang2; Lu, Xingan2 |
| 刊名 | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
 |
| 出版日期 | 2023-09-01 |
| 卷号 | 82期号:9页码:18 |
| 关键词 | In situ stress test Overcoring stress relief method Deep hard rock Rock failure Numerical simulation |
| ISSN号 | 1435-9529 |
| DOI | 10.1007/s10064-023-03377-z |
| 英文摘要 | The failure of a rock core will result in the inaccuracy of in situ stress tests when the overcoring stress relief method is used in deep rock engineering. To investigate the stress test error caused by rock failure, stress test simulations under different loading conditions and post-peak parameters are designed and implemented. The results show that the stress measurement error increases exponentially as the degree of rock core failure increases. The greater the severity of the rock failure, the greater the estimation error of each stress component. The strain test error is the primary cause of stress test error, not the residual stress at the rock core. Based on this, the applicable conditions of the overcoring stress relief method are analyzed. To keep the stress test error within an acceptable range, the test borehole axis should be kept close to the direction of the maximum principal stress. Additionally, the fracture depth should be less than 0.2 times the radius of the pilot hole. This research will provide the basis for the error analysis of stress test results and optimization of a borehole drilling process for the overcoring stress relief method in deep hard rock engineering. |
| 资助项目 | National Natural Science Foundation of China[42202320] ; National Natural Science Foundation of China[42102266] ; Innovation Group Project of the Natural Science Foundation of Hubei Province[ZRQT2020000114] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001048647600001 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/39162]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Li, Shaojun |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Sinohydro 14Th Engn Bur Co LTD, Kunming 650000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Minzong,Li, Shaojun,Xu, Huaisheng,et al. Investigation of the rock failure effect on overcoring stress relief test in deep hard rock[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2023,82(9):18. |
| APA | Zheng, Minzong,Li, Shaojun,Xu, Huaisheng,Liang, Zhiqiang,&Lu, Xingan.(2023).Investigation of the rock failure effect on overcoring stress relief test in deep hard rock.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,82(9),18. |
| MLA | Zheng, Minzong,et al."Investigation of the rock failure effect on overcoring stress relief test in deep hard rock".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 82.9(2023):18. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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