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《Coal Science and Technology》 2015-01
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Rock burst prevention and control technology of mine driving gateway passing through mining terminal line in contiguous seams

LAN Hang;DU Tao-tao;Department of Mining and Design,Tiandi Science and Technology Company Limited;Rock Mechanics and Mine Support Technical Committee,China Coal Society;  
In order to prevent and control the rock burst of the driving gateway,the paper firstly determined the main natural influence factors,including the seam powerful bumping tendency,horizontal ground stress and hard and thick roof. According to the location of the site rock burst occurred,a numerical simulation was applied to analyze stress distribution of the driving face passing through mining terminal line area of the driving face in the top seam and to determine that a multi mining stress superposition was the power source factor of the rock burst occurred. According to the site micro-seismic monitoring and measured results,the paper held that energy released from the high level hard roof failure would further seriously make stress concentrated in the seam and was the induced factor of the rock burst occurred.The paper divided late driving area into powerful rock burst danger area and normal rock burst danger area. The danger releasing measures to enhance the support and large diameter borehole combined seam standing blasting were provided to the powerful rock burst danger area and the advance strata pressure releasing with a seam water injection conducted in the normal rock burst danger area. The site electromagnet radiation detection results showed that a electromagnet radiation intensity and pulse of the powerful rock burst danger area would be obviously higher than the normal rock burst danger area and also showed that the effect of the measures to release the rock burst danger was obvious to ensure the safety of the late driving operation.
【Fund】: 国家自然科学基金资助项目(51304116);; “十二五”国家科技支撑计划资助项目(2012BAK09B01)
【CateGory Index】: TD324
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