2D与3D模型预测石太客运专线特长隧道涌水量

研究目的：目前较为常用的隧道涌水量的预测方法为专业理论方法,其精度不高。为此,利用计算机技术来寻求新的方法,并预测石太客运专线特长隧道涌水量,从而指导现场施工。研究方法：理论模型与2D、3D数学模型相结合,合理设定边界条件使数学模型接近实际情况。研究结果：利用有限单元法建立二维与三维预测结果互相吻合,且与现场观测数据非常相近。研究结论：本预测方法具有指导现场施工的作用,对同类地区的隧道涌水量计算有借鉴意义。但三维数值模型预测的隧道涌水量值都小于二维数值模型的预测值,这主要是在对单元划分处理时偏于简单化所致,需在以后的工作中对程序做进一步改进。

Prediction of Water-gushing Volume of Super Long Tunnel on Shijiazhuang-Taiyuna Passenger Dedicated Railway Line with 2D and 3D Models

Research purposes: Nowadays the professionally theoretical method is still common used for prediction of water-gushing volume of tunnel with low precision,so it is necessary to seek a new method of predicting the water-gushing volume of super long tunnel on Shijiazhuang-Taiyuna Passenger Dedicated Railway Line with computer technology for the purposes of directing the construction.Research methods:With the integration of theoretical model with 2D and 3d mathematical models,rational setting the boundary conditions makes the mathematical models close to real conditions.Research results:The predicted results obtained by 2D and 3D models with finite-element method are matching each other and very close to the observed data on site.Research conclusions:This prediction method can direct the construction and provide the reference to the calculation of water-gushing volume of the tunnel in the similar areas.However,the value of water-gushing volume predicted with 3D model is smaller than that with 2D model because of simplifying classification of units,so the improvement of the program will be made in future.