A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Mitigation of Karst Tunnel Water Inrush during Operation in Seasonal Variation Zone: Case Study in Nanshibi Tunnel
A discrimination method with drainage or plugging that mitigates the karst tunnel water inrush during operation in a seasonal variation zone is proposed to cope with repeated water inrush disasters. This method identifies the critical-water-pressure working state of the tunnel lining by analyzing the water inrush mechanism during the karst operation period. Based on the working state of the tunnel’s critical water pressure, a more accurate method for calculating the equivalent permeability coefficient of the surrounding rock in the karst tunnel is proposed, and then the treatment principles of plugging and drainage can be distinguished theoretically. By taking the Nanshibi operating tunnel as an example, a field test of water inrush disaster treatment was carried out to testify the effectiveness of the proposed approach. Results indicate that: (1) the discrimination method of drainage or plugging can effectively guide the management of water inrush disasters in operating tunnels, and (2) the grouting plugging plan and grouting treatment effect inspection method proposed for operating tunnels have high applicability.
Mitigation of Karst Tunnel Water Inrush during Operation in Seasonal Variation Zone: Case Study in Nanshibi Tunnel
A discrimination method with drainage or plugging that mitigates the karst tunnel water inrush during operation in a seasonal variation zone is proposed to cope with repeated water inrush disasters. This method identifies the critical-water-pressure working state of the tunnel lining by analyzing the water inrush mechanism during the karst operation period. Based on the working state of the tunnel’s critical water pressure, a more accurate method for calculating the equivalent permeability coefficient of the surrounding rock in the karst tunnel is proposed, and then the treatment principles of plugging and drainage can be distinguished theoretically. By taking the Nanshibi operating tunnel as an example, a field test of water inrush disaster treatment was carried out to testify the effectiveness of the proposed approach. Results indicate that: (1) the discrimination method of drainage or plugging can effectively guide the management of water inrush disasters in operating tunnels, and (2) the grouting plugging plan and grouting treatment effect inspection method proposed for operating tunnels have high applicability.
Mitigation of Karst Tunnel Water Inrush during Operation in Seasonal Variation Zone: Case Study in Nanshibi Tunnel
Lan, Xiongdong (author) / Zhang, Xiao (author) / Yin, Zhanchao (author) / Li, Xianghui (author) / Yang, Teng (author)
2021-03-19
Article (Journal)
Electronic Resource
Unknown
Study on Assessment Model of Water Inrush Hazards in Karst Tunnel
| British Library Conference Proceedings | 2014
On Karst Water Inrush (Gushing) Geological Environment in Pingyang Tunnel
| Trans Tech Publications | 2014
On Karst Water Inrush (Gushing) Geological Environment in Pingyang Tunnel
| British Library Conference Proceedings | 2014
A Case Study for Escape Route Optimization after Water Inrush in a Backward Excavated Karst Tunnel
| British Library Conference Proceedings | 2016