The design of Luanxian an Ge Zhuang IV orebody of planning and design,according to the occurrence of orebody,terrain conditions,suitable for underground mining.Design of recoverable reserves of 1313700 T,design an annual output of 100000 t,the service life of 11a.The angle of 55 ° 60 °,the average thickness 10m,belongs to the steeply inclined medium thick orebody,the lower shaft development system.According to the technical conditions of mining and ore body shape,occurrence,scale and ecological protection requirements,design and selection of pillar continuous mining of upward horizontal cut and fill stoping method.Determine the design height of 40m,layout five stage of transport level.Using direct drainage system on the facade of the centralized water drainage,a drainage.The main section of the circular section of main shaft,shaft diameter 5m,for single cage shaft,the shotcrete,in unstable section of reinforced concrete support.The flanking diagonal ventilation mode,set the ventilation shaft in the orebody flanking,Jianzuo exit,with circular section of shaft,shaft diameter 2.5m,the shotcrete.The ore selection of reentrant bottom,rail transportation.Through technical and economic accounting,reach the economic optimization of mining enterprises.
Keywords lower shaft development system; non-pillar continuous mining upward horizontal cut and fill stoping method; ventilation flanking diagonal; reentrant bottom