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Quantitative evaluation of rockburst proneness for surrounding rocks considering combined effects of the structural plane and excavation disturbance

文献类型：期刊论文

作者Dai, Jinhao1,3; Gong, Fengqiang1,3; Qi, Shengwen2,4; Xu, Lei1,3
刊名TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
出版日期2023-10-01
卷号140页码:18
ISSN号0886-7798
关键词Rockburst Rockburst proneness Structural plane Excavation disturbance Residual elastic energy
DOI10.1016/j.tust.2023.105335
英文摘要Rockburst proneness evaluation is crucial for predicting and preventing rockburst disasters. This study proposes a quantitative evaluation model of rockburst proneness for surrounding rocks. In this model, residual elastic energy is applied as an index to quantitatively evaluate the rockburst proneness, which can be calculated by the geological strength index GSI and disturbance factor D. Furthermore, empirical theory and wave velocity methods are adopted to quantify GSI and D. The results show that the GSI value estimated using acoustic P-wave velocity coincides well with the suggested value. The excavation damage zone (EDZ) around tunnels can be divided into the high-damage zone (HDZ) with D = 1 and weak-damage zone (WDZ) with D linearly decreasing to zero. On this basis, a quantitative evaluation procedure for rockburst proneness is presented and applied to five tunnels. It is found that excavation disturbance could reduce the rockburst proneness of surrounding rocks. The rock mass adjacent to the excavation outline is most severely disturbed, resulting in lower residual elastic energy and more likely to exhibit a low or medium rockburst proneness. With the D linearly decreasing within WDZ, the residual elastic energy first slowly and then rapidly increases, and the rockburst proneness gradually enhances. The residual elastic energy and rockburst proneness is positively correlated with GSI. In addition, significant differences exist in the rockburst proneness distribution at different parts of the excavation section, and multiple disturbances could further expand the low and medium rockburst proneness range.
WOS关键词ENERGY-STORAGE ; STRAIN-ENERGY ; PREDICTION ; FAILURE ; TUNNELS ; INDEX ; BURST
资助项目National Natural Science Foundation of China ; [42077244]
WOS研究方向Construction & Building Technology ; Engineering
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:001058895400001
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/111426]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Gong, Fengqiang
作者单位1.Southeast Univ, Sch Civil Engn, Nanjing 211189, Peoples R China
2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
3.Southeast Univ, Engn Res Ctr Safety & Protect Explos & Impact, Minist Educ ERCSPEIME, Nanjing 211189, Peoples R China
4.Chinese Acad Sci, Key Lab Shale Gas & Geoengn, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Dai, Jinhao,Gong, Fengqiang,Qi, Shengwen,et al. Quantitative evaluation of rockburst proneness for surrounding rocks considering combined effects of the structural plane and excavation disturbance[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2023,140:18.
APA Dai, Jinhao,Gong, Fengqiang,Qi, Shengwen,&Xu, Lei.(2023).Quantitative evaluation of rockburst proneness for surrounding rocks considering combined effects of the structural plane and excavation disturbance.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,140,18.
MLA Dai, Jinhao,et al."Quantitative evaluation of rockburst proneness for surrounding rocks considering combined effects of the structural plane and excavation disturbance".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 140(2023):18.

入库方式： OAI收割

来源：地质与地球物理研究所

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