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| RESEARCH ON ROCKBURST PREDICTION METHOD BASED ON ELASTIC STRAIN ENERGY |
| GUO Jianqiang1，ZHAO Qing1，WANG Junbao2，ZHANG Jian3 |
(1.College of Civil Engineering，Guizhou University，Guiyang 550003，China；2. College of Civil Engineering，
Xi?an University of Architecture and Technology，Xi?an 710055，China；3. Guizhou Industry Polytechnic College，
Guizhou University，Guiyang 550003，China) |
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Abstract Rockburst is one of the key science problems in deep underground engineering and deep mining condition. On the basis of elastic strain energy and criteria for strength and structural failure of rocks，a new model for prediction of possibility and classification of rockburst was proposed considering the intrinsic relations between elastic strain energy and rockburst. The research results are as follows：(1) Three geological parameters including geostress( )，rock mass integrity designation(RID)，tensile strength( ) and poisson's ratio were adopted for establishing rockburst model and also reveals requirement for mechanics ，brittleness，integrity and stored energy；(2) Compared with the traditional model，model based on elastic energy revealed both the symmetry of rockburst classification and difference for tunnel. Corresponding to the 4 grades as intense，moderate，weak and no rockburst，the 3 boundary values are presented as 3，10 and 110．Rockburst of some rock projects at home，are used to verify this model，the results show that model based on elastic energy are close to the practical records，which proves that the model is acceptable．
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2015, Vol. 34 
