DYNAMIC INSTABILITY CRITERION OF NONLINEAR ROCK BEAM AND APPLICATION TO DIAGNOSIS OF ROCK BURST

来源 :The Third International Conference on Dynamics,Vibration and | 被引量 : 0次 | 上传用户：cnsafety

【摘要】

：

【作者】

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WU Wenbin CHENG Guoqiang HU Qianting

【机构】

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Key Laboratory of Mining Disaster Prevention and Control,Ministry of Education,Shandong University o

【出处】

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The Third International Conference on Dynamics,Vibration and

【发表日期】

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2010年4期

【关键词】

：

Nonlinear rock beam disturbance chaos roof rock burst instability criterion

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　　The condition of roof rock burst was studied by using chaotic dynamics.The mechanical model of rock beam was established to analyze the roof with disturbance.The cubic nonlinear elastic constitutive law was used to describe the strain-softening characteristics of rock.By using of Galerkin method, differential dynamic system was obtained, and the mechanical condition of dynamic instability critical state and disturbance criterion for the instability were determined by Melnikov method.

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DYNAMIC INSTABILITY CRITERION OF NONLINEAR ROCK BEAM AND APPLICATION TO DIAGNOSIS OF ROCK BURST

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