Abstract:

Great damages appeared after the initial construction of ingate at XinZhi Mine was completed. In order to govern the ingate effectively, the actual situation, theoretical analysis and numerical simulation methods were combined in the paper. And then, the main reason of the ingates’ damage and instability was analyzed, based on which, the deep hole grouting reinforce technique of weak and fractured surrounding rocks was proposed. Then the mechanism of deep hole grouting, the grouting parameters and the process were confirmed through the research as well. Finally, effective governance was achieved through taking the technology into actual use.

Key words: deep hole grouting, mine shaft ingate, extremely large-section roadway, weak and fractured surrounding rock