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《Nonferrous Metals(Mining Section)》 2015-04
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Application of entropy-weight and matter-element extension model in evaluation of rock burst risk level

GUO Shengmao;LIU Tao;ZHAO Lijun;LIU Wutuan;ZHANG Chenjie;GAO Zhong;Northwest Institute of Mining and Metallurgy;Gansu Changba Nonferrous Metals Co.,Ltd.;  
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(σI/σc),brittleness coefficient(σc/σt)and energy index(Wet)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 Lead-Zinc Mine.The results show that the prediction results were accord with the actual rock burst.This method has certain guiding significance to actual project.
【CateGory Index】: TD235
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