Longwall mine construction method 110

Abstract

A longwall 110 mining method, wherein a haulage dip, an air-return dip and a track dip are provided, a plurality of working faces are arranged in a whole panel, both an upper gateroad and a lower gateroad of each mining face in mining are connected to the haulage dip, and the lower gateroad that retains an entry after the working face is mined is used as an upper gateroad of a next working face, and the lower gateroad of the next working face is connected to the air-return dip. The upper gateroad and the lower gateroad of each working face in mining of the present disclosure are connected to the haulage dip, and the lower gateroad of the working face is connected to the air-return dip.

1 . A longwall 110 mining method, wherein, a haulage dip, a air-return dip and a track dip are provided, a plurality of working faces are arranged in a whole panel, both an upper gateroad and a lower gateroad of each mining face in mining are connected to the haulage dip, and the lower gateroad that retains an entry after the working face is mined is used as an upper gateroad of a next working face, and the lower gateroad of the next working face is connected to the air-return dip. 
     
     
         2 . The longwall 110 mining method according to  claim 1 , wherein, the upper gateroad and the lower gateroad of the working face in mining are always connected to each other, and connected to the lower gateroad of the next working face. 
     
     
         3 . The longwall 110 mining method according to  claim 2 , wherein, the upper gateroads of the working face in mining are not retained after accomplishment of mining. 
     
     
         4 . The longwall 110 mining method according to  claim 1 , wherein, directional roof pre-split cutting is used during the gob-side entry retaining process. 
     
     
         5 . The longwall 110 mining method according to  claim 4 , wherein, anchor rods sand anchor cables are used for roof support during cutting top for retaining a gob-side entry. 
     
     
         6 . The longwall 110 mining method according to  claim 4 , wherein, rocks caved from a roof are crushed and expanded for filling a mined-out area to prevent sinking of an upper roof of the lower gateroad. 
     
     
         7 . The longwall 110 mining method according to  claim 4 , wherein, a top-cutting cantilever beam is used to change distribution laws of surrounding pressure. 
     
     
         8 . The longwall 110 mining method according to  claim 2 , wherein, directional roof pre-split cutting is used during the gob-side entry retaining process. 
     
     
         9 . The longwall 110 mining method according to  claim 3 , wherein, directional roof pre-split cutting is used during the gob-side entry retaining process.