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《Journal of China Coal Society》 2011-S2
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Study on the damage of the underground cavern caused by blasting waves

MU Chao-min1,2,3,QI Juan4(1.School of Energy Resources and Safety,Anhui University of Science and Technology,Huainan 232001,Anhui,China;2.Key Lab of Mining Coal Safety and Efficiently Constructed by Anhui Province and Ministry of Education,Huainan 232001,China;3.Luoyang Institute of Hydraulic Engineering and Technology,Luoyang 470123,China;4.Center of Modern Educational Technology,Anhui University of Science and Technology,Huainan 232001,China)  
The tension and compression damage constitutive model was established based on the theory of continuum damage mechanics.Using the model that was implemented into the nonlinear dynamic finite element program,LS-dyna.The tension and compression damage caused by blasting waves in rock around the underground cavern was simulated.The results show that the rock bolts can improve the anti-explosion ability of the underground cavern.The damage direction is changed and the cracks are prohibited by the rock bolts so that damage can not penetrate rock bolts forming damage in the rock around the underground cavern and meanwhile the tensile strength of the rock around cavern is improved by the rock bolts.
【Fund】: 安徽省高等学校省级自然科学重点资助项目(KJ2011A082)
【CateGory Index】: TD354
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