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锚注支护是一项维护围岩稳定的新技术。根据锚注支护机理 ,将注浆锚杆简化为作用于围岩的一种体积力 ,并将注浆作用看作为对围岩力学性能的改善 ,从而建立了锚注支护计算的力学模型。依据围岩流变特性的试验结果 ,选择了一个合适的流变模型。最后应用粘弹性理论 ,分析了对具有流变特性围岩 ,锚注支护在维护其稳定性方面的作用。计算结果表明 ,锚注支护对维护流变性围岩稳定的效果显著
Anchor injection support is a new technology to maintain the stability of the surrounding rock. According to the bolting and grouting support mechanism, the grouting bolt is simplified as a kind of bulk force acting on the surrounding rock, and the grouting action is regarded as the improvement of the mechanical properties of the surrounding rock, so the mechanical model of bolting and grouting is established . According to the test results of rheological properties of surrounding rock, a suitable rheological model was chosen. Finally, the viscoelastic theory is applied to analyze the role of surrounding rock and rheological anchor in maintaining its stability. The calculation results show that the effect of bolt and grouting support on the maintenance of rheological stability of surrounding rock is remarkable