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《Journal of Liaoning Technical University(Natural Science)》 2010-02
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Analysis of complex roof separation and parameters determination of prestressed bolt supporting

ZHANG Guohua1.2,ZHANG Xuefeng1,PU Wenlong1,BI Yewu1 (1.Safety Engineering College,Heilongjiang Science and Technology Institute,Harbin 150027,China;2.School of Mechanics & Engineering,Liaoning Technical University,Fuxin 123000,China)  
In order to determine the parameters for pre-stressed bolting system on compound roof at mine roadway,based on theoretical analysis,this paper presents the procedure for determining pre-stressed bolt's length,spacing between bolts,distance between rows and pretension force,as well as their corresponding formulas.The site application provides the satisfactory results.The study shows that the seam separations in immediate roof must satisfy three conditions at the same time including load,span and deflection degree.Strata combination of composite beams is regarded as the combination of key strata under bolt combined effect.The determination on the technical parameters of pre-stressed bolt support must follow the principle of coordination uniform deformation.The study result is of significance in bolting design for the roof support in mine roadway.
【Fund】: 黑龙江省研究生创新科研基金资助项目(YJSCX2009-067HLJ)
【CateGory Index】: TD353.6
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【Co-citations】
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1 Zhu Yongjian1,2,Luo Yixin3,Zhang Daobing2(1.Hunan University of Science and Technology,Xiangtan,Hunan 411201,China;2.Hunan Key Laboratory of Safe Mining Techniques of Coal Mines,Xiangtan,Hunan 411201,China;3.Hunan Financial & Economic College,Changsha 410205,China);Research on bolt-cable reducing span support technology in large span roadway of fully-mechanized coal faces[J];Engineering Sciences;2010-03
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