Abstract
Water inrush is a serious geological disaster in tunnel. For the effective prevention and control of the occurrence of water inrush, a static-dynamic water inrush risk assessment method is proposed by considering the Micangshan tunnel as an example. First, four possible types of water inrush phenomenon are identified based on the geological and hydrogeological conditions of the tunnel: water inrush in water-bearing cracks, fault fracture zones, karst pipelines, and karst caves. Next, evaluation indexes that affect water inrush are determined. By combining the index weight value calculated by analytic hierarchy process (AHP) with the index quantitative value, the static water inrush disaster evaluation model is established, which provides a basis for tunnel design. Finally, with the combination of the static evaluation model and advanced forecast method, a dynamic risk prediction method of water inrush is established, which provides guidance for safe construction. The results confirm that the proposed method is a reliable theoretical basis for early assessment and prediction of tunnel water inrush disasters.
Highlights
Detection of anomalous geological structures such as fault zones, faults, aquifers, and karsts in the process of tunnel construction is challenging owing to their large buried depth and length of the tunnel [1,2,3,4]
E analytic hierarchy process (AHP) by considering the several evaluation indexes of water inrush has been widely used as a decision support tool to solve complex decisionmaking problems [8]
A static water inrush disaster assessment model is a risk assessment system of the water inrush phenomenon based on the AHP and the scoring method
Summary
Detection of anomalous geological structures such as fault zones, faults, aquifers, and karsts in the process of tunnel construction is challenging owing to their large buried depth and length of the tunnel [1,2,3,4]. Erefore, it is necessary to introduce evaluation indexes of the water inrush disaster types into the prediction model in order to establish a quantitative and qualitative water inrush prediction method. Erefore, it is necessary to deeply understand the response characteristics of various advanced prediction methods for groundwater, establish a dynamic risk assessment system, and predict the risk of water inrush disaster in the construction process. We established a static-dynamic risk assessment method to predict water inrush hazards taking the Micangshan tunnel as the research object. According to the analytic hierarchy process and the scoring method, a quantitative and qualitative static evaluation method was established to quantify the risk of water inrush hazard, thereby providing a basis for the design stage. According to the static evaluation method, three dynamic prediction methods corresponding to the water inrush disaster in the construction process were established. The reliability and applicability of the method were verified with an example for the tunnel water inrush disaster prediction, prevention, and control to provide reference
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
