急倾斜煤层充填机理梁式模型力学分析  

Beam Mechanical Model of Stowing Mechanism in Steeply Inclined Coal-seam Mining

作　　者：王港盛[1] 田慧强[2] 徐铎[2] 赵建峰[1] 

机构地区：[1]中国矿业大学应用技术学院,江苏徐州221008 [2]西山煤电股份有限公司镇城底矿,山西古交030203

出　　处：《煤矿开采》2011年第3期47-50,共4页Coal Mining Technology

基　　金：国家自然科学基金项目(51004104);国家重点基础研究发展计划(973计划)项目(2007CB209400)

摘　　要：针对在"三下"采煤或要求避免地表下沉量较大的工作面开采,通常采取采空区充填的开采方法。从力学梁式理论的角度分析采空区充填后工作面顶板受力特征,引入充填长度及顶板支撑均布载荷两参数,探讨了采空区充填范围以及填充材料在不同的压实程度过程中对工作面顶板挠曲下沉的影响,给出顶板挠曲计算式。并从数值分析的角度给出工作面顶板在采空区不同充填状态下的位移特征,说明采空区填充对工作面顶板挠度的影响。Stowing mining method is usually used for avoiding large surface subsidence when mining under buildings,railway and water body.Roof stress characteristic after stowing was analyzed based on beam mechanical model.Two parameters,stowing length and uniform load of roof,were introduced to discuss gob stowing range and influence of stowing material on roof deflection under different compaction degrees,roof deflection calculation formula was presented.With numerical method,roof displacement under different stowing states was simulated to show the influence of gob stowing on roof deflection.

关 键 词：急倾斜煤层 采空区充填机理 梁式分析 顶板挠度 

分 类 号：TD323[矿业工程—矿井建设]