Abstract: Based on mining characteristics of roadway mining and filling of 2# coal seam in Xingdong Coalmine，the three-dimensional numerical model was built by using FLAC3D numerical analysis software to simulate the process of coal seam mining，supporting and waste filling.By using this model，the variety of the upper settlement，plastic area and vertical stress field under two conditions are studied：the first scheme（roadways were anchored without filling) and the second scheme（roadways were anchored and filled).The results shows that，waste filling body can improve the bearing capacity of coal pillar by applying lateral stress to coal pillar，but also decrease the upper settlement and the plastic area，and control the value of vertical stress.

Key words: Roadway-pillar mining, Waste filling, Numerical simulation, Stability analysis