Optimization of Support Parameters of Roadway With Soft Roof in Shallow Seam

Taking the geological conditions of 20107 working face in GaoJialiang Coal Mine as background, multi-bases displacement monitoring device, borehole television, anchor dynamometer and borehole stress were used to conduct roadway pressure observation. Three optimization programs of roadway support parameters were put forward, and the best program was determined by numerical simulation method. The results show that horizontal deformation of roadway was more severe than vertical deformation, the peak of advanced abutment pressure is 15 m to 22 m ahead, and roadway supported using the second program is well maintained.