回撤工作面顶板塌落规律的研究与应用  

Research and Application of Collapse Rule on Roof in Retracting Working Face

作　　者：刘阳 王自卫 夏玉洁 LIU Yang;WANG Ziwei;XIA Yujie(Fully Mechanized Mining Equipment Installation Branch of Jinneng Holding Coal Industry Group,Datong 037001,China;Datong Mechanical and Electrical Equipment Co.,Ltd.Central Machinery Factory,Jinneng Holding Group,Datong 037001,China)

机构地区：[1]晋能控股煤业集团综采装备安装分公司,山西大同037001 [2]晋能控股集团大同机电装备有限公司中央机厂,山西大同037001

出　　处：《煤炭技术》2025年第2期36-40,共5页Coal Technology

摘　　要：通过对回撤工作面支架撤空区直接顶的初次断裂步距以及周期断裂步距预测计算模型的建立,掌握撤空区顶板塌落规律,对撤空区顶板塌落进行准确预测预报。并应用该塌落规律,对掩护区域紧后顶板进行科学定点支护,在顶板多次塌落后形成铰接拱形塌落带,弱化内部应力,对掩护区域的顶板下沉控制具有重要作用。Through the establishment of the primary fracture step distance and the periodic fracture step distance prediction and calculation model,master the roof collapse law of the withdrawal area,and accurately predict the roof collapse of the withdrawal area.And the collapse law is applied to carry out the scientific fixed-point support of the tight rear roof of the cover area.After the repeated collapse of the roof,it weakens the internal stress and plays an important role in the sinking control of the roof in the cover area.

关 键 词：回撤工作面 坚硬顶板 塌落规律 掩护支架 支护 

分 类 号：TD327[矿业工程—矿井建设]