NDLI: Determination of ejection velocity of rock fragments during rock burst in consideration of damage

Content Provider	Springer Nature Link
Author	Zuo, Yu jun Li, Xi bing Zhou, Zi long
Copyright Year	2005
Abstract	The ejection velocity of rock fragments during rock burst, one of the important indexes representing the rock burst strength, is used most conveniently in the supporting design of tunnel with rock burst tendency and is often determined by means of observation devices. In order to calculate the average ejection velocity of rock fragments theoretically, the energy of rock burst was divided into damage consuming energy and kinetic energy gained by unit volume of rock firstly, and then the rock burst kinetic proportional coefficient ν was brought up which could be determined according to the rock-burst damage energy index W $_{D}$, at last the expression of the average ejection velocity of rock fragments during rock burst was obtained and one deep level underground tunnel was researched using the mentioned method. The results show that the calculation method is valid with or without considering the tectonic stress of tunnels, and that the method can be a reference for supporting design of deep mining.
Starting Page	618
Ending Page	622
Page Count	5
File Format	PDF
ISSN	10059784
Journal	Journal of Central South University of Technology
Volume Number	12
Issue Number	5
e-ISSN	19930666
Language	English
Publisher	Central South University of Technology
Publisher Date	2005-01-01
Publisher Place	Changsha
Access Restriction	Subscribed
Subject Keyword	rock burst ejection velocity support design energy equilibrium damage Engineering Metallic Materials
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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