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采用FLAC~(3D)数值模拟软件对3种工况下巷道围岩塑性区的分布特征进行对比分析,得出采用注浆+锚索的支护方案可以明显改善围岩塑性区分布,充分发挥锚索与注浆的优势。对该方案进行现场试验,并监测围岩变形及注浆前后的完整性,验证了该方案合理可行。
The FLAC 3D numerical simulation software was used to analyze the distribution characteristics of the plastic zone of the surrounding rock under the three conditions. It was concluded that the grouting and anchor cable support scheme could significantly improve the plastic zone distribution of the surrounding rock and give full play to The advantages of anchor cable and grouting. The scheme was tested in the field and the surrounding rock deformation and the integrity before and after grouting were monitored. The results show that the scheme is reasonable and feasible.