Abstract
Tunnel collapses due to various reasons according to the state of ground and excavation conditions and condition of support. It is very difficult to predict and evaluate them and prepare the strengthening in advance.
This study deals with development of the prediction system of tunnel collapse magnitude and analysis of the causes affecting the magnitude of the collapse.
Based on the analysis of data in this study, the main cause of collapse magnitude, which is the output node, is topography around the tunnel.
