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针对甘肃省永古高速公路乌鞘岭特长隧道F4断层破碎带施工期间突发涌水、坍塌情况,基于现场情况及涌水量观测,采取了支护加强、径向注浆加固、塌方体注浆、优化开挖方案等综合工程处治对策,现场观察及监测表明上述措施实施后,涌水及变形等均得到了有效控制,取得了较好的效果,确保了隧道的施工安全与结构安全。本文成果对穿越断层涌水破碎带地层隧道的修建具有一定的指导作用和参考价值。
Aiming at the sudden water inrush and collapses during the construction of F4 fault zone of Wushaoling extra long tunnel in Yonggu expressway of Gansu Province, based on the on - site situation and the observation of water inflow, the measures of strengthening support, radial grouting and reinforcement, Optimized excavation program and other comprehensive treatment measures, on-site observation and monitoring show that after the above measures are implemented, gushing water and deformation have been effectively controlled and achieved good results to ensure the tunnel construction safety and structural safety. The results of this paper have certain guiding significance and reference value for the construction of tunnels crossing stratigraphic gushing fractured zone.