摘要
麻(城)武(汉)高速公路大别山隧道出口段穿越断层破碎带时围岩破碎、掉块严重、裂隙水发育,施工中通过超前地质预报对地质情况进行预判,采用超前小导管辅以水泥-水玻璃双液注浆止水加固、正台阶法开挖的施工方案,取得了良好的工程效果。
In Dabieshan tunnel of Mawu highway,the geological conditions are very complicated.The country rock is not only very broken,also often fall pieces.The fissure water is developing.Advanced geology forecast technology was adopted to prejudge the geology conditions during construction.Also,pre-supplemented with a small tube of cement-sodium silicate pairs of fluid sealing grouting reinforcement was applied.Excavation step method was used as construction scheme.The project has achieved good results.
出处
《土工基础》
2010年第2期17-19,共3页
Soil Engineering and Foundation
关键词
断层破碎带
超前地质预报
超前小导管
水泥-水玻璃双液注浆
fault fracture zone
advanced geology forecast
advanced small pipe
cement-sodium silicate pairs of grouting