Microseismic investigation of mining-induced brittle fault activation in a Chinese coal mine
文献类型：期刊论文
| 作者 | Cheng, Guanwen; Li, Lianchong; Zhu, Wancheng; Yang, Tianhong; Tang, Chunan; Zheng, Yun; Wang, Yue |
| 刊名 | INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
 |
| 出版日期 | 2019 |
| 卷号 | 123页码:- |
| 关键词 | MS (microseismic) monitoring Buried brittle fault activation MS energy b-value Focal mechanism |
| ISSN号 | 1365-1609 |
| DOI | 10.1016/j.ijrmms.2019.104096 |
| 英文摘要 | The process whereby a brittle fault was activated by mining is not only significant for disaster prediction, but also for earthquake prediction. Thus, it was necessary to study their activation process. In this study, stress state, AE (acoustic emission)/MS (microseismic) activities during brittle fault activation, stages of brittle fault activation, and the relation between AE/MS activities and brittle fault parameters were analysed and it was feasible to identify buried brittle faults, determine their parameters and activation process based on MS monitoring. The No. 22517 working face in the Dongjiahe Coalmine was taken as an example. Firstly, a buried brittle fault was identified in No. 22517 working face by the MS monitoring method. Secondly, the buried brittle fault parameters were determined. Its azimuth angle was 307.5 degrees in the orbital roadway and 357.5 degrees on the haulage roadway. Its dip angle was 73 degrees and it was a reverse fault. Thirdly, the activation process of the buried brittle fault was determined. The buried brittle fault was not affected by the mining activities when the distance (from mining activities to the buried brittle fault) was over 300 m, the 'disturbance stage' was from 300 m to 80 m, and the `local activation stage' from 100 m to 30 m, and the 'whole activation stage' around 30 m. The b value decreased during the process of brittle fault activation and reached a minimum value at the whole activation stage; it was concluded that these changes are related to the stress distribution around the brittle fault. The results demonstrated that MS monitoring technology can detect small buried brittle faults ahead of the working face, and is also an effective method to study the process and mechanism of brittle fault activation. |
| WOS研究方向 | Engineering ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000499075100025 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/14833]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Northeastern Univ, Ctr Rock Instabil & Seismic Res, Sch Resources & Civil Engn, Shenyang 110819, Liaoning, Peoples R China; 2.Dalian Univ Technol, State Key Lab Coastal & Offshore Engn, Dalian 116024, Peoples R China; 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China; 4.Shaanxi Coal & Chem Technol Inst Co Ltd, Xian 710065, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Guanwen,Li, Lianchong,Zhu, Wancheng,et al. Microseismic investigation of mining-induced brittle fault activation in a Chinese coal mine[J]. INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,2019,123:-. |
| APA | Cheng, Guanwen.,Li, Lianchong.,Zhu, Wancheng.,Yang, Tianhong.,Tang, Chunan.,...&Wang, Yue.(2019).Microseismic investigation of mining-induced brittle fault activation in a Chinese coal mine.INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,123,-. |
| MLA | Cheng, Guanwen,et al."Microseismic investigation of mining-induced brittle fault activation in a Chinese coal mine".INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES 123(2019):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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