Optimization of Grouting Parameters and Reinforcement Method in Karst Area Tunnel
In order to improve the grouting reinforcement effect in the watey karst area of the tunnel,relying on at unnel project,a variety of advanced detection methods are adopted to comprehensively detect the water-rich karst area of the tunnel.On this basis,the numerical simulation method is used to analyze the change of tunnel displacement and water inrush under different grouting thickness,and the grouting reinforcement is carried out in the watery karst area of the tunnel by combining three grouting techniques.The results show that the thickness of curtain grouting is mainly reflected in the reduction of water inflow.When the thickness of grouting exceeds 5 m,the water stop effect of the tunnel will hardly increase;Select 5 m grouting thickness and 25 m grouting length as the grouting scope of the project.In the process of grouting,the combination of three grouting technologies can effectively solve the problems of high water level surge and hole formation difficulties.The combination of exploration and grouting can provide dynamic feedback and optimization for the subsequent grouting scheme.After grouting,the site construction shows that the grouting effect is good.
万方数据
维普
