Correlation between time-delayed rockburst and blasting disturbance in deep-buried tunnel

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 > 会议论文

	Correlation between time-delayed rockburst and blasting disturbance in deep-buried tunnel
	Zhao, Z. N.1; Feng, X. T.1; Chen, T. Y.1; Feng, G. L.2; Liu, G. F.2; Duan, S. Q.2
	2013
会议日期	JUN 18-20, 2013
会议地点	Tongji Univ, Shanghai, PEOPLES R CHINA
页码	773-776
英文摘要	The deep-buried tunnels in Jinping II Hydropower Station are characterized by great depth, long length, large size in diameter and high geo-stress. During the excavation, by drilling and blasting method, of these tunnels, lots of the time-delayed rockbursts occurred; and blasting disturbance was one of triggering factors of their occurrence. This paper discusses the correlation between time-delayed rockbursts and blasting disturbance profoundly from two aspects of blasting disturbance strength and the delayed time of the time-delayed rockbursts. And the main conclusions were presented as follows: (1) the number of time-delayed rockbursts does not reduce with the increase of their distance from explosive center; (2) the risk of the time-delayed rockburst in situations with several working faces is obviously higher than that with single tunnel face; (3) most of the time-delayed rockbursts occur within seven days to one month after excavation; (4) the relationship between frequency of the time-delayed rockbursts and their delayed blasting time is a good power function, and the peak period of rockburst activities is within 4 hours after blasting.
源文献作者	Feng, XT ; Hudson, JA ; Tan, F
会议录	ROCK CHARACTERISATION, MODELLING AND ENGINEERING DESIGN METHODS
会议录出版者	CRC PRESS-TAYLOR & FRANCIS GROUP
会议录出版地	BOCA RATON
语种	英语
WOS研究方向	Engineering
WOS记录号	WOS:000342685900133
内容类型	会议论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4768]
专题	岩土力学所知识全产出_会议论文国家重点实验室知识产出_会议论文
作者单位	1.Northeastern Univ, Minist Educ Safe Min Deep Met Mines, Key Lab; 2.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech
推荐引用方式 GB/T 7714	Zhao, Z. N.,Feng, X. T.,Chen, T. Y.,et al. Correlation between time-delayed rockburst and blasting disturbance in deep-buried tunnel[C]. 见:. Tongji Univ, Shanghai, PEOPLES R CHINA. JUN 18-20, 2013.