摘要
利用材料力学等相关理论,结合龙煤集团新铁煤矿某工作面的实际煤岩赋存条件,根据急倾斜煤层赋存的非对称性以及工作面下部冒落矸石的充填特征,将上覆岩层作用载荷和充填矸石支撑力进行简化,建立了急倾斜工作面顶板弯曲变形力学模型,给出了急倾斜工作面顶板的挠曲线方程,分析了不同煤层采高、不同工作面长度条件下顶板最大挠度点位置的变化关系。
Using the theory of material mechanics and the practical occurrence in the Xintie Coal Mine face of Longmei Group, the pa- per makes corresponding simplification on the load of the overlying strata and the holding power of filling gangue based on ＂the asymmetry of the coal seam and filling characteristics of the collapsed gangue at the lower parts of face, puts forward the mechanical model of warping and deformation and the deflection curve equation of the roof in the steeply inclined working face, and analyzes the relations of different positions of the biggest deflection point of the roof with different mining height and face length.
出处
《煤矿安全》
CAS
北大核心
2013年第1期189-192,共4页
Safety in Coal Mines
基金
中国矿业大学大学生实践创新训练计划资助项目(X1029011010)
关键词
急倾斜煤层
覆岩运动
矸石充填
力学模型
steeply inclined mining seam
overburden movement
gangue filling
mechanical model
