高地应力隧道钢架支护变形与防护措施

Steel frame supporting high geostress tunnel deformation analysis and measures

本文通过对云南省(云桂铁路新莲隧道)高地应力围岩初期支护钢拱架失稳破坏分析总结,选取合适的高地应力隧道初期支护措施,利于控制初期支护变形。

This article through to the Yunnan Province（Yun Gui Railway new Lotus tunnel） high stress of surrounding rock of early support steel arch instability and failure analysis, select the appropriate heights should force tunnel initial supporting measures to control the initial support deformation.