滑坡体等复杂地质条件下隧道进洞施工技术

Construction Technology of Tunnel Entry Under Complex Geological Conditions Such as Landslide

我国中西部地区公路修建不可避免地要在复杂地质条件下修建隧道,这对隧道安全顺利进洞施工技术带来了巨大的挑战。依托平地螺旋隧道,针对进口段高陡滑坡地质情况,探讨了高陡滑坡地质情况下的进洞技术,并提出了增设抗滑桩、山体注浆加固、长管棚跟进等综合施工技术,一系列技术的应用确保了隧道安全顺利进洞,同时可供高陡滑坡条件下浅埋隧道施工参考。

In Mid-western China,the construction of tunnels is inevitably required during the construction of highways under complex geological conditions,which poses a huge challenge to safe and smooth tunnel construction technology.Based on the geological conditions of high and steep landslides at the entry section of the flat ground spiral tunnel,the tunneling technology under the high and steep landslide geological conditions is discussed,and comprehensive construction technologies such as adding anti-sliding piles,grouting reinforcement of mountain bodies,and follow-up of long pipe sheds are proposed.The safe and smooth tunnel entry is ensured through the application of a series of technologies,and reference for the tunnel entry construction in other similar high and steep landslide geological conditions is provided.