High Tectonic Stress Soft Rock Tunnel Supporting in 2410 Floor Roadway of Baijiao Coal Mine

For support difficult problems and serious deformation in 2410 floor transport roadway in Baijiao Coal Mine, according to the theory of “high pre-stressed force supporting”, FLAC^3D numerical simulation is used to analyze two different support design projects. The simulation results show that the deformation value of two walls and roof and floor is less than 360 mm and 240 mm respectively; we determine 2410 floor transport roadway support project, through field application test and supporting effect inspection; the test results show that the maximum values of roof and floor deformation as well as the two walls are 26 mm and 21 mm respectively; surrounding rock in the supporting range of bolt and anchor is stability, the deformation is small and roadway support effect is good.