Effects of structural planes on the microseismicity associated with rockburst development processes in deep tunnels of the Jinping-II Hydropower Station, China

doi:10.1016/j.tust.2018.11.008

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Effects of structural planes on the microseismicity associated with rockburst development processes in deep tunnels of the Jinping-II Hydropower Station, China
	Feng, Guang-Liang ; Feng, Xia-Ting ; Chen, Bing-Rui ; Xiao, Ya-Xun ; Zhao, Zhou-Neng
刊名	TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
	2019
卷号	84 期号:-页码:273-280
关键词	Rock mechanics Rockburst Microseismicity Structural planes Jinping-II Hydropower Station
ISSN号	0886-7798
DOI	10.1016/j.tust.2018.11.008
英文摘要	Rockbursts cause serious casualties and damage in deep, hard rock tunnels. Structural planes can play an important role in the rockburst development process. In this paper, effects of structural planes on the micro seismicity in rockburst development processes are summarized and studied in deep tunnels of the Jinping-II Hydropower Station, China. The study is based on an analysis of 44 moderate and intense rockbursts which occurred during a period of more than a year of microseismic (MS) monitoring and relates to 11.6 km of tunneling. The results show that most of the cases are affected by structural planes regardless of the rockburst's moderate or intense character. The structural planes in the areas where rockbursts occur are mostly stiff ones and grade In or IV ones. In rockbursts development processes affected by structural planes, the MS energy proportion of big MS events, i.e. whose logarithm of MS energy (measured in Joules) is larger than 3.83, is comparatively lower. Structural planes change the way microseismicity evolves. Right from the beginning in the rockburst development and just before the rockburst affected by structural planes, there were some big MS events occurring. And structural planes cause rockbursts to occur more likely. Threshold values of the microseismicity (number of MS events and MS energy) for rockburst occurrence are relatively lower. In addition, the micro seismicity in rockburst development processes with different intensities and with/without structural planes shows discreteness and the microseismicity is greater in more intense rockbursts.
WOS研究方向	Construction & Building Technology ; Engineering
语种	英语
WOS记录号	WOS:000457506700024
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/15059]
专题	岩土力学所知识全产出_期刊论文
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China; 2.Northeastern Univ, Minist Educ Safe Min Deep Met Mines, Key Lab, Shenyang 110819, Liaoning, Peoples R China; 3.Southwest Univ Sci & Technol, Sch Environm Engn & Resources, Mianyang 621010, Peoples R China
推荐引用方式 GB/T 7714	Feng, Guang-Liang,Feng, Xia-Ting,Chen, Bing-Rui,et al. Effects of structural planes on the microseismicity associated with rockburst development processes in deep tunnels of the Jinping-II Hydropower Station, China[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2019,84(-):273-280.
APA	Feng, Guang-Liang,Feng, Xia-Ting,Chen, Bing-Rui,Xiao, Ya-Xun,&Zhao, Zhou-Neng.(2019).Effects of structural planes on the microseismicity associated with rockburst development processes in deep tunnels of the Jinping-II Hydropower Station, China.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,84(-),273-280.
MLA	Feng, Guang-Liang,et al."Effects of structural planes on the microseismicity associated with rockburst development processes in deep tunnels of the Jinping-II Hydropower Station, China".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 84.-(2019):273-280.