改进膨胀岩洞室应力分布的有效措施的研究与应用

The Study and Application of Effective method for Improving Stress Distributing of the expand Rock Tunnel

洞室开挖区周围一定范围内若遇到象页岩、泥岩极易吸湿或遇水膨胀的岩石 ,对可能导致洞室围岩产生膨胀突出、坍塌、冒顶、底鼓等不利影响 ,严重时会使洞室产生变形破坏 ,采用开掘卸压槽的方法是改进膨胀岩洞室应力分布的有效措施。

if swell rock as shale pulpy rock to absorb water is fall across at tunnel border excavated,it shall bring disadvantage affection.This affection shall certainly cause tunnel to distend and collapse.But release stress cut is an effective method for improving stress distributing of the expand rock tunnel.