Study on mechanism and control technology of the floor heave in the high stress soft rock roadway

Meanwhile, with the mining intensity and the mining area are gradually increased, Currently mining velocity is 8-12 m/a in China’s coal mines, the mining environment has become increasingly complex, characteristics of rock exhibit nonlinear and abrupt and strong rheology are occurred (He et al. 2005), it provides new challenges for the study of the theory to control floor heave.