Stability study on naturally filling body in gob-side entry retaining  

作　　者：Zhou Baojing Xu Jinhai Zhao Maosen Zeng Qinglin 

机构地区：[1]State Key Laboratory of Coal Resources and Mine Safety, China University of Mining & Technology, Xu :hou 221008, China [2]School of Mines, China University of Mining & Technology, Xuzhou 22116, China [3]Panzhihua Coal Limited Liability Company, Panzhihua 617066, China

出　　处：《International Journal of Mining Science and Technology》2012年第3期423-427,共5页矿业科学技术学报（英文版）

基　　金：provided by the National Natural Science Foundation of China (No. 50874104);the Science and Technology Research of the Ministry of Education of China

摘　　要：In the construction of the filling gob-side entry retaining in a lane, we utilize the self-slide natural phenomenon of a falling gangue in an inclined coal seam goaf. First, we put the falling gangue of goal above the laneway and made it the main filling material by adopting the measurement of flexible supporting system combined with those of rigid supporting system. Then we made the filling material gunited and solidified to maintain the filling goal of the gob-side entry retaining beside the lane. Considering the law of energy conservation and law of pressure distribution for retaining the active and Static soil of the wall, we analyzed the reliability of a gangue blocking facilities and the stability of the filling mate- rial in the lane. We analyze the figures to see the stability. The result shows that the gangue block sup- porting system is reliable, and has been successfully practically applied.In the construction of the filling gob-side entry retaining in a lane, we utilize the self-slide natural phenomenon of a falling gangue in an inclined coal seam goaf. First, we put the falling gangue of goaf above the laneway and made it the main filling material by adopting the measurement of flexible supporting system combined with those of rigid supporting system. Then we made the filling material gunited and solidified to maintain the filling goal of the gob-side entry retaining beside the lane. Considering the law of energy conservation and law of pressure distribution for retaining the active and static soil of the wall, we analyzed the reliability of a gangue blocking facilities and the stability of the filling material in the lane. We analyze the figures to see the stability. The result shows that the gangue block supporting system is reliable, and has been successfully practically applied.

关 键 词：Failing gangueNatural-fillingGob-side entry retainingStability 

分 类 号：TD353.6[矿业工程—矿井建设] N8[自然科学总论]