Backfilling technology and strata behaviors in fully mechanized coal mining working face

作     者：Zhang Qiang Zhang Jixiong Huang Yanli Ju Feng 

作者机构：School of MinesChina University of Mining&TechnologyXuzhou 221116China State Key Laboratory of Coal Resources&Mine SafetyXuzhou 221008China 

出 版 物：《International Journal of Mining Science and Technology》 (矿业科学技术学报（英文版）)

年 卷 期：2012年第22卷第2期

页      面：151-157页

核心收录：

学科分类：081901[工学-采矿工程] 0709[理学-地质学] 0819[工学-矿业工程] 0808[工学-电气工程] 08[工学] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0807[工学-动力工程及工程热物理] 0815[工学-水利工程] 0813[工学-建筑学] 0814[工学-土木工程] 

基　　金：Financial supports for this work provided by the National Natural Science Foundation of China (No. 51074165) the Key Program of National Natural Science Foundation of China (No.50834004) A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (No.SZBF2011-6-B35) 

主　　题：综采工作面 回填技术 行为 刮板输送机 煤炭开采区 物质运动 邢台煤矿 监测分析 

摘      要：Based on the principle of fully mechanized backfilling and coal mining technology and combined with the Xingtai Coal Mine conditions,we mainly optimized the coal mining equipment and adjusted the coal mining method in the Xingtai Coal Mine 7606 working face for implementation this ***,we define the practical backfilling process as the (from backfilling scraper conveyor s) head to tail backfilling,step by step swinging up of the tamping arm,gradual compacting,moving formed backfilling scraper conveyor when the second tamping arm cannot pass and connecting the immediate roof by back material push front material movement .Meanwhile,the stress changes of backfill body in coal mined out area was monitored by stress sensors,and the roof caving law was analyzed by monitoring the dynamic subsidence of à210 west roadway of this *** site tests results show that using this new backfilling and coal mining integrated technology,the production capacity in the 7606 working face can reach to 283,000 ton a year,and 282,000 ton of solid materials(waste and fly ash) is backfilled,which meets the needs of high production and *** goaf was compactly backfilled with solid material and the strata behavior was quite desirable,with an actual maximum vertical stress of the backfill body of 5.5 *** body control the movement of overburden within a certain range,and there is no collapses of major areas in the overlying strata upon backfilled *** maximum subsidence and speed were 231 mm and 15.75 mm/d respectively,which proved the practical significance of this integrated technology.