Study On Treatment Measures And Formation Mechanism Of The Collapse Disaster In Gaoling Tunnel

In the tunnel construction,the collapse is the most common type accident.With the rapiddevelopment of infrastructure construction,tunnel collapse accident is not uncommon. Variableinfluencing factors exists in tunnel collapse, which is difficult to treat, and it is one of the mostcommon and most damaging incidents in the process of tunnel construction. Once the accidentoccurred,not only delay time of period, significantly increase engineering expenses,but also willimperil the builder and technical personnel’s safety even life.This paper based on speedway tunnel in Gaoling, research the generating mechanics oftunnel collapse and caving accident from geology, hydrology and human factors aspects, andraise corresponding treatment methods in view of its physical circumstances, and usetwo-dimensional finite element method to establish the actual geological model, explain thecauses and caving through numerical method. On the calculation of safety factor, it verify whetherit have the possibility of optimization, and optimization of the results have proved the conclusionof the optimization is correct.The analysis to generating mechanics to collapse and caving ofspeedway tunnel in Gaoling and the corresponding treatment methods could provide somereference for the prophylaxis and treatment to other tunnel collapse in the future.