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Title: Microseismic energy evolution of high rock slop during excavation and after reinforcement
Author: Zhuang DY(庄端阳); Liang ZZ(梁正召); Tang CA(唐春安); Ma K(马克)
Issued Date: 2016
Conference Name: 2nd International Conference on Rock Dynamics and Applications (RocDyn)
Conference Date: MAY 18-19, 2016
Conference Place: Suzhou, PEOPLES R CHINA
Abstract: Rock mass is known to exchange energy with the external environment when it is under load until it fails, a destabilization phenomenon driven by energy. In order to investigate the energy evolution of high rock slope and its relation with rock mass failure of the slope during slope excavation and after reinforcement, a parameter called microseismic energy density was proposed and the relationship between microseismic energy density and the stress and strain of rock mass was discussed. Taking right bank slope of the Dagangshan Hydropower station as an example, the microseismic energy release and energy transference of rock mass during slope excavation and after reinforcement were revealed. These lead to conclusions: Firstly, not only the distribution and intensity of microseismicity but also the potential dangerous area of the slope can be determined synthetically by microseismic energy density. Secondly, the distribution of high energy release zones is closely related to the locations of the deep unloading fracture zones XL316-1 and the fault f(231) moderately dipping out of the slope. Finally, the microseismic event rate and energy density decreased significantly after reinforcing, and the relative high energy release zones transferred to the edge of anti-shear tunnels and low-threat faults, dikes in the deeper area of the slope, so its mechanical behavior was obviously improved. Conclusions can provide references for developing energy criterion and the prediction method of high rock slope failure.
Keyword: SEISMIC ENERGY
Indexed Type: CPCI-S ; EI
Corresponding Author: Zhuang, DY (reprint author), Dalian Univ Technol, Inst Rock Instabil & Seism Res, Dalian, Liaoning, Peoples R China.
Related URLs: 查看原文
Source: ROCK DYNAMICS: FROM RESEARCH TO ENGINEERING
Language: 英语
Department: LMFS工程地质体力学(LEM)
WOS ID: WOS:000385239400077
ISBN: 978-1-315-47081-8; 978-1-138-02953-8
Citation statistics:
Content Type: 会议论文
URI: http://dspace.imech.ac.cn/handle/311007/60205
Appears in Collections:流固耦合系统力学重点实验室(2012-)_会议论文

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