论文部分内容阅读
通过分析目前对海底隧道涌水量预测中使用的经验解析法和数值模拟法的局限性,采用模型试验的方法,基于相似理论,结合青岛胶州湾海底隧道水文地质和工程地质情况,以其右线的一个断面为模型,根据围岩渗透系数、黏聚力以及摩擦角配置了相似材料,并制作了海底隧道模型架和涌水量测量装置,同时在开挖过程中对位移、应力和渗压进行了监测。监测数据表明,本模型试验能较好的模拟海底隧道的实际开挖情况,试验所得涌水量与现场实测数据结果非常接近。通过解析解、数值解及试验观测值的对比表明,本试验在海底隧道涌水量预测方面具有较好的实用性,对指导防排水设计及施工实践有一定的参考价值。
Based on the similarity theory and the hydrogeology and engineering geology of the Qingdao Jiaozhou Bay Cross-Harbor Tunnel, with the analysis of the limitations of the empirical analysis method and the numerical simulation method used in the prediction of water inflow at the submarine tunnel, A section of the model is used as a model, and similar materials are arranged according to the permeability coefficient, cohesion and friction angle of the surrounding rock, and the undersea tunnel model frame and the water inflow measuring device are also manufactured. At the same time, displacement, stress and seepage pressure Monitoring. The monitoring data show that the model test can simulate the actual excavation of the tunnel and the inflow of water from the experiment is very close to the actual measured data. Comparison of analytical solution, numerical solution and experimental observation shows that this experiment has good practicability in forecasting water inflow of subsea tunnel, which is of certain reference value for guiding drainage design and construction practice.