和顺至邢台铁路洺水隧道下穿邢汾高速公路且临近其桥台,根据工程类比并借助数值分析,从爆破安全距离、交叉稳定性分析、爆破分析等方面,分析了隧道施工对高速公路的影响。结果表明,隧道下穿高速公路Ⅳ级围岩段采用型钢钢架支护和三台阶临时仰拱法施工能有效地控制路面及桥台沉降,采用控制爆破并减小开挖进尺,能有效降低爆破施工对公路桥台的影响,为设计施工提供了依据。 From Heshun to Hsing-Shui Tunnel of Xing-Tai Railway under Xing-Fen Expressway and near to its abutment abutment, according to engineering analogy and numerical analysis, this paper analyzes the influences of tunnel construction on expressway influences. The results show that the tunnel Ⅳ can be effectively controlled by the support of steel girders and the temporary three-step arch method in surrounding rock sections of expressway Ⅳ, and the controlled blasting and the reduction of excavation footage can be effectively reduced The impact of blasting construction on the bridge abutment provides the basis for design and construction.