The invention discloses a method for mining a broken thick ore body through a 
coal roadway heading 
machine. The method comprises the steps that a 
vein external middle-section 
haulage roadway is arranged in the traveling direction of the ore body, a plurality of 
vein-crossing roadways are arranged perpendicular to the traveling direction of the ore body, ore chutes, 
pedestrian ventilation systems and filling chutes are arranged in the 
vein-crossing roadways, and a Z-shaped layer transfer equipment contacting road is arranged at the end of the ore body; 
stoping is conducted through the 
coal roadway heading 
machine, and road-entering-type 
stoping or successive 
stoping roadway by roadway or stoping at intervals is conducted in the direction of a vein; a carry-scraper follows the 
coal roadway heading 
machine to load and transport ore, and then the ore is transferred to the ore chutes; and meanwhile, waste ore cemented filling is conducted on a stoping space through the carry-scraper, filling and stoping are simultaneously conducted, and stoping and filling are balanced. The 
mechanization degree of the method is high, stope preparation 
engineering is reasonably designed, the processes ofstoping and filling are optimized, ore mining and filling 
continuous operation is achieved, the number of operators is decreased, the labor intensity is lowered, and thus the production efficiency isimproved greatly.