Abstract：This paper studies the Dujiacun 1201 South transportation roadway. Combined with FLAC3 Dnumerical simulation and coupled support theory, the rock failure mechanism of 1201 south transportation roadway was analyzed and a steeply inclined weak coal support program was developed. The study has shown that the shear and tension effects of the upper roof destroys the country rock of steeply inclined weak coal. The proposed support program can effectively inhibit the bottom floor heave, two sizes moving closer and the development of the plastic zone. Appling the support scheme to the field shows that the Integrity of asymmetric coupling support rock bolt ( cable) has a nice shape within the scope of support program, and the supporting roadway states stability after 20 ~ 30 days.

Keyword：steeply inclined weak coal;preferred supporting scheme;mine pressure observation;