The Rock Burst Evaluation of Risk Level Based on Entropy-weight and Matter-element Model
Received:January 05, 2015  Revised:January 13, 2015
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KeyWord:rock burst; Entropy-weight and Matter-element; relational degree; theory of extenics
                 
AuthorInstitution
GUO-Shengmao 西北矿冶研究院
LIU Tao 西北矿冶研究院
ZHAO-Lijun 甘肃厂坝有色金属有限公司
LIU-Wutuan 西北矿冶研究院
ZHANG-Chengjie 西北矿冶研究院
GAO-Zhong 甘肃厂坝有色金属有限公司
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Abstract:
      The occurrence of rock burst was affected by many factors. Considering rock mechanics conditions of rock burst occurred and the impact of geotechnical engineering environment,the stress concentration factor of the rock( ),brittleness coefficient( ) and energy index( )were selected., The mine rock burst orientation and risk assessment model was established based on the entropy-weight and matter-element theory. According to the rock burst data of 20 mines,The rock burst influence index system was determined. The weight was determined by entropy weight theory. The maximum correlation recognition was used to evaluate the mined area risk level. This method was used to evaluate the rock burst danger level in Changba mine. The results show that the prediction results were accord with the actual rock burst. This method has certain guiding significance to actual project.
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