Application of Cement Filling in Tieshan Iron Mine
Tieshan Iron Mine is one of three important production bases of Shandong Jinling Iron Mine.Large amount of mined out space appear in the mining process of Tieshan iron mine,which is treated by the barren rock filled.Because of the reduction of waste rock,the mined out space is treated by cement filling.Because the forming time of mined out space is long,and the collapse or mining of part pillars,the filling work is difficult.In order to use the tailings cement filling in the mined out space for improvement,various methods are provided to resolve the problems produced in cement filling,such as airtight wall design,filters water and drain off water,slurry preparation of filling control etc.The high efficiency of filling is realized.The potential safety hazard of mined out space is eliminated.