深部软岩巷道底臌蠕变控制数值模拟研究

Numerical Simulation Study on Creep Control of Deep Soft Rock Roadway Floor Heave

深部软岩巷道底板具有强流变特征,引起深部软岩巷道底臌变形破坏的原因是多方面的。本文借助FLAC软件建立不同支护方案的计算模型,对深部软岩巷道底臌蠕变特征进行数值模拟研究,结果表明,全断面锚注支护在降低围岩快速蠕变的时间和速度,控制巷道变形、减小围岩塑性区范围等方面具有最佳的效果。

The floor of the floor heave and da mage were firstly set up, then the deep soft rock roadway has strong rheological characteristic, there are many reasons for of deep soft rock roadway. In this paper different calculation models of support sehe me floor creep characteristics of the roadway were researched by nu merieal simulation, the reasult shows that the whole section bolt gouting support has the best effect in reducing the surrounding rock creep ti me and fast speed, controlling defor mation and reducing the scope of surrounding rock mass.