关键词: 涌水量预测; 古德曼经验式; 鸿图特长隧道; 莲花山断裂;

Abstract: The deep-buried extra-long tunnel is a control project in the construction of expressway.If the high-pressure water gushing is encountered in the process of excavation, it will have an adverse impact on the construction of the project.The Hongtu extra-long tunnel was affected by the deep and large Lianhuashan fault.During the tunnel excavation, there was a strong high-pressure and large-flow water gushing in the tensile fissure of igneous rock.Taking the Hongtu extra-long tunnel as an example, for representative tunnel section of water gushing controlled by fault structure zone, we calculate the water gushing quantity of bedrock section and fault zone respectively by Goodman empirical formula.The results show that the predicted maximum water inflow of the main fault F2 series in K91+010～K91+550 is 192 258 m3/d, which is basically consistent with the actual excavation maximum water inflow 189 576 m3/d.The water inflow calculated by this method is more suitable to the actual situation of the project and has a stronger adaptability to the calculation of water inflow under this geological condition.

Key words: prediction of water inflow; Goodman Empirical Formula; Hongtu extra-long tunnel; Lianhuashan fault;