综放开采覆岩结构稳定性及支架支护阻力分析——以保德煤矿为例  

Analysis on stability of overburden structure and support resistance in fully mechanized top coal caving mining: taking Baode Coal Mine as an example

作　　者：张海鹏 ZHANG Haipeng(Baode County Coal Mine,CHN Energy Shendong Coal Group Co.,Ltd.,Xinzhou 036600,China)

机构地区：[1]国能神东煤炭保德煤矿,山西忻州036600

出　　处：《煤炭科学技术》2022年第S01期48-53,共6页Coal Science and Technology

摘　　要：以保德煤矿综放开采为工程背景,基于理论分析、相似材料模拟试验手段与方法,分析了大采高综放面覆岩的结构类型,应用弹性力学理论,建立了砌体梁结构、短悬臂梁结构的力学解析模型。研究表明:直接顶特征对矿压显现具有重要影响,覆岩的多关键层层序决定覆岩形成的悬臂梁结构是保德矿矿压显现强烈的根本原因,工作面三盘区支架工作阻力不小于16271.8 kN,目前所选择的支架工作阻力偏小,建议选择支护强度与工作阻力较大的支架。Taking the fully mechanized top coal caving mining of Baode coal mine as the engineering background,based on theoretical analysis and similar material simulation test means and methods,the structural types of overburden in fully mechanized top coal caving face with large mining height are analyzed,applying elastic mechanics theory,the mechanical analysis model of masonry beam structure and short cantilever beam structure is established.Studies have shown that the direct top feature has an important impact on the mine pressure,and the multi-critical layers of the overdock decision is determined that the cantilever beam structure formed by the overhang is a strong root cause of the mineral pressure,and the working surface is three-panel bracket working resistance.Not less than 16271.8 kN,the currently selected bracket work resistance is small,it is recommended to choose a bracket with large support strength and work resistance.

关 键 词：覆岩结构 相似材料模拟试验 工作阻力 砌体梁结构-短悬臂梁结构 

分 类 号：TD355.4[矿业工程—矿井建设]