乌鞘岭隧道穿越F7断层隧道变形机理分析及其支护措施的探讨研究

Analysis on the Tunnel Deformation Mechanism of Wushaoling Tunnel Crossing F7 Faultage and Exploration on Its Support Measure

乌鞘岭隧道穿越F7断层时遇到了高应力软弱围岩,针对F7断层的特点及软岩高应力围岩特性,分析出隧道发生大变形的机理,并提供对该段围岩高应力软岩的判断方法,对不同情况下的隧道提出了几种卸压—支护方式。

When Wuqiaoling Tunnel crossing the F7 faultage, it meets the high-stress soft surrounding rock. In view of thecharacteristics of F7 faultage and soft rock and high-stress surrounding rock, the essay analyzes the mechanism for great deformationof tunnel, and puts forward the methods for judging the high-stress soft rock on the above mentioned section, as well as severalpressure-unload & support methods for the tunnels under different conditions.