采矿与安全工程学报2017，Vol.34Issue(1)：16-23,8.DOI:10.13545/j.cnki.jmse.2017.01.003
深井沿空留巷顶板变形破坏特征与控制对策研究
Study on deformation and failure characteristics of deep gob-side entry retaining roof and the controlling countermeasures
摘要
Abstract
To solve the problem of the separation and broken roof not forming a bearing structure or even causing caving disaster in deep gob-side entry retaining,with the deformation and failure forms of roof inducted and classified,failure reasons are thoroughly analyzed through field investigation,theo-retical analysis and field tests.The "multiple supporting structure" control system is proposed,and the component structure,control mechanism,support materials and support sequence of the new system are studied.The results have shown that 1) The main reasons that cause the deformation and failure of deep gob-side entry retaining roof are weak supporting structure,large span,large inclined angle,low coor-dination capacity of roof and sidewalls;2) The "multiple supporting structure" control system,which includes bearing capacity enhancement of anchorage system,intensity of crack coal-rock mass,col-laborative bearing structure of roof and sidewalls,as well as unloading and span-cut,can ensure the structural integrity of roof and improve the coordination bearing capacity of roof and sidewalls.The re-search achievements,which have theory and reference value for roadway support with similar condi-tions,have been applied in the eastern area of Panyi coal mine.关键词
深井/沿空留巷/顶板/控制对策Key words
deep mine/gob-side entry retaining/roof/control countermeasures分类
矿业与冶金引用本文复制引用
武精科,阚甲广,谢福星,杨增强..深井沿空留巷顶板变形破坏特征与控制对策研究[J].采矿与安全工程学报,2017,34(1):16-23,8.基金项目
国家自然科学基金项目(51234005,51504259) （51234005,51504259）
江苏省基础研究计划项目(BK20151145) （BK20151145）
江苏省高校优秀中青年教师和校长境外研修计划 （）
