A Simulation of Bolting and Grouting Support for Donghai Coal Mine

This paper is based on the real data of Donghai Coal Mine in Jixi. Combining the experimental measurements and numerical simulations, we simulate not only the number of bolting in arc-shaped bottom of Donghai Coal Mine but also the distribution of surrounding rock stress both before and after grouting the roadway, and furthermore, we analyze the stress changes of roadway surrounding rocks after grouting. What's more, we are dedicated to finding out the effective way to reduce the corner damages resulted from the concentration of bottom stress and to increase the carrying capacity of the bottom surrounding rocks.