复杂地质构造区隧道开挖稳定性评价研究

Study on Stability Evaluation of Tunnel Excavation in Complex Geological Structure Area

文中选取10个指标作为开挖隧道稳定性评价因素,使用组合赋权的方法获取各个指标的权重,其中隧道围岩为影响隧道稳定性的最主要因素。使用模糊物元法对隧道10个里程段进行开挖隧道稳定性评价,评价结果表明,8个里程段稳定性为Ⅰ级,2个里程段为Ⅱ级,情况较好,评价结果与现场结果较为吻合。

Ten indexes were selected to evaluate the stability of the excavated tunnel,and the weights of each index were obtained by the method of combination weighting.The surrounding rock was the most important factor affecting the stability of the tunnel.The fuzzy mature-element method is used to evaluate the excavation stability of 10 mileage sections of the tunnel.The evaluation results show that 8 mileage sections are of class I stability and 2 mileage sections are of class II stability,and the evaluation results are in good agreement with the field results.