Abstract: Aiming at technical problems of lower coal roadway arrangement and the appropriate support with variable thickness roof under ultra-close seams goaf in Sanjiaohe colliery,through stress distribution analysis of the upper residual coal pillar and consideration of improving mining recovery efficiency,the two roadways of 601 mining workface are located with the layout scheme of reverse long distance.Based on the on-site roadway roof peeping,anchorage force test and setting torque transformation test,different support programs are proposed for adapting different geological conditions in coal roadway:combined support with steel shed and anchor bolt,anchor bolt-cable support and anchor bolt-steel strip-cable support.In the implementation demonstration of two undermine roadways support with full excavating footage,monitoring results show that:anchor bolts working-load turned stable fast,the pretension designed rationally,with the maximum amount of surrounding rock deformation of 30 mm during driving period;and during mining period,prohead roadway section deformed with the maximum amount of roof subsidence of 93 mm.The related coal roadway integrated control technology guarantees the safe and efficient mining on the lower portion of the close coal seams.