“三软”煤层巷道围岩变形特征及支护参数优化  

Deformation characteristics and optimization of support parameters of"three soft"coal seam roadways

作　　者：王平 Wang Ping(Henan Shenhuo Xinglong Mining Corporation Ltd.,Xuchang 461000,China)

机构地区：[1]河南神火兴隆矿业有限责任公司,河南许昌461000

出　　处：《煤炭与化工》2021年第7期6-9,共4页Coal and Chemical Industry

摘　　要：“三软”厚煤层综采工作面回采巷道的特点是断面大、围岩软、变形大,在巷道掘进过程中,较短时间内易发生破坏失稳,甚至诱发冒顶事故,造成人员伤亡和经济损失。为解决“三软”厚煤层回采巷道掘进及支护难题,以“三软”厚煤层为特殊背景,采用理论分析方法进行研究,依据“自稳隐型拱”理论方法,分析围岩结构稳定性、“自稳隐形拱”高度,进而分析“三软”厚煤层巷道围岩变形特征及控制机理,为设定回采巷道支护技术指标提供依据。"Three soft"thick coal seam with large section,soft surrounding rock and large deformation,which are prone to damage and destabilization in a short period of time during mining,even with roofing accidents,resulting in casualties and economic losses.In order to solve the problem of"three soft"thick coal seam recovery mining,"three soft"thick coal seam was taken as a special background,with theoretical analysis,based on"self-stabilizing hidden arch",the theoretical method was used to analyze the structural stability of the surrounding rock,the height of"self-stabilizing invisible arch",and the deformation characteristics and control mechanism of the surrounding rock in the roadway of"three soft"thick coal seam were analyzed,so as to provide a basis for setting the technical indexes of the roadway support for the recovery mining.

关 键 词：三软煤层 围岩变形 自稳隐形拱 钻孔窥视 

分 类 号：TD353[矿业工程—矿井建设]