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《Chinese Journal of Underground Space and Engineering》 2011-06
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Study on Bolting-Wire Mesh Support Technology of Dynamic Pressure Extraction of Large Section Roadway in Deep Mines

Wei Sijiang,Gou Panfeng,Wang Manxiang(School of Energy Science and Engineering,Henan Polytechnic University,Jiaozuo Henan 454000,China)  
With the increasing of mining intensity,most of main mines of Pingdingshan Coal Shares have reached deep mining.Deep roadways in high in-situ stress characterized with large deformation,long stabilization time and high repair rate.Based on engineering geology condition of wind-road,26071 of 11th colliery of Pingdingshan Coal Shares supported by high strength bolting coordinated with cable,the strata pressure characters of the mine were researched under different dynamic pressure.This supporting method can fully satisfy the requirements in tunneling and low advanced abutment pressure stage;but on the peak of abutment stage,measure of strengthening supports were needed because of slippage of bolt,serious floor heave and deformation of walls.The industrial experiment shows that surface displacement,deep displacement and force of support were in reasonable range.The reduction of cross-section was not more than 12.4%,which satisfied the requirements.
【Fund】: 国家自然科学基金资助项目(50874037);; 河南省杰出人才计划(094200510004);; 河南煤矿安全生产项目(H09-53);; 河南理工大学研究生创新基金
【CateGory Index】: TD353.6
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