急倾斜工作面底板应力分布与破坏规律研究  

Study on Stress Distribution and Damage Law of the Floor in Steeply Inclined Working Face

作　　者：马淑胤[1] 赵光明[1] 孟祥瑞[1] 

机构地区：[1]安徽理工大学煤矿安全高效开采省部共建教育部重点实验室,安徽淮南市232001

出　　处：《矿业研究与开发》2015年第8期67-71,共5页Mining Research and Development

基　　金：国家自然科学基金资助项目(51174005;51374013;51134012);霍英东教育基金会第十二届高等院校青年教师基金基础性研究课题项目(121050);教育部科学技术研究重点项目(210096)

摘　　要：为了掌握急倾斜工作面底板应力分布及破坏规律,建立了综合考虑工作面走向与倾向受力特点的倾斜三维空间半无限体模型,运用MATHCAD软件及SUFER软件计算并模拟出三维状态下不同深度底板应力分布情况,并对某矿3232(3)急倾斜工作面底板进行无支护和水泥基注浆临时支护模拟,分析研究结果表明:三维状态下底板各岩层垂直应力等值线立体图呈漏斗状,该矿底板最大破坏深度为10.4m。应用水泥基注浆材料对底板进行临时支护,能够有效控制底板破坏滑移。In order to obtain stress distribution and damage law of the floor in steeply inclined working face,the three-dimensional half-infinite body model was established,which comprehensively considered the stress characteristics along the working face direction and inclination.Meanwhile,the three-dimensional stress distributions in floors with different depths were calculated and simulated by MATHCAD and SUFER.The numerical simulation was applied to simulate no supporting condition and temporary supporting with cement-based grouting material condition for the floor of No.3232（3）steeply inclined working face in a coal mine.The results showed that the three-dimensional stress contours in different floor strata presented funnel shapes,and the maximum damaged depth in floor was calculated to 10.4m.Temporary supporting with ce-ment-based grouting material on the floor could effectively control the damage and slip of floor.

关 键 词：急倾斜工作面 应力分布 数值模拟 注浆支护 

分 类 号：TD315.3[矿业工程—矿井建设]