A Causal Network-Based Risk Matrix Model Applicable to Shield TBM Tunneling Projects

The present study compares and analyzes three risk analysis models that are applicable to shield tunnel boring machine (TBM) tunneling, thus proposes an improved matrix model based on the causal networks sustainable projects. advantages disadvantages of compared, structured by analyzing relationship between factors events. Based comparison results, network-based (CN-Matrix model), which complements exploits existing models, is proposed in this paper. Furthermore, suggests a means modifying weighting scores estimation score, permits CN-Matrix determine level more reasonably. Thus, reliable robust compared models.