Abstract
This design mine is designed for the longhu fouth newly-built mine of the Qitaihe float coal Co.Ltd. The capacity of which is 0.90Mt/a, The service life of which is 75a. The well field is divided into two horizon exploition of which there are seven coal seams. There are 54A#、55#、56#、57#up、57#、58#up、58#. The average trend is 2600m of the well field. The average declivity length is 5000m. The total thickness is 14.4m. The average thickness is 2.0m.The industry storage capacity is 144.8 Mt.The average ralze angle of coal seams is 13°according to the geology data. It belongs to gently inclined coal bed .
Because the declivity length of the mine is too long and belongs to gently inclined coal bed and is effected by geological conditions. The mine well should be exploited by the way of declivity longwall workface. The workface is totally comprehensive mechanized coal mining method. The mine is designed by the way of double incline opening and center tunnel. The main shaft is conveyed by rubber belt conveyer. The auxiliary shaft is conveyed by the carrying-man-bogie and bogie. The main haulage cross-cut is lonveyed by 3t hopper bogie. The shaft station is in the form of horizontal yard. The air draught is in the form of exhaust ventilation.