Abstract: Based on the characteristics of gently inclined and multilayer ore body, a similitude material model has been constructed through similar simulation experiment, to analyze its strain variation of stope and roadway surrounding rock, surface subsidence deformation characteristics in advancing and retreating filling stoping mining and discuss the reasonable mining sequence in mining Shanghengshan mine by subsequent filling method. The result shows that the deformation of surrounding rock has obvious characteristics of intermittency and discontinuousness in different strata, and strain near the rock and ore body contact area has greater gradient variation. The tensile strain area in advancing mining is 15.28% less than that of retreating mining. The strain state in tunnel roof and sidewall far from the ore tends to change from compressed to tensed one with the distance between stope and tunnel increasing. In addition, the ground settlement range is not symmetrical centered with the gob. The advancing mining method is one of the better mining sequences.

Key words: gently inclined and multilayer deposits, wall rock, deformation, mining sequence, backfill mining, similarity simulation