Abstract
Poor rich water sand flow plasticity and permeability coefficient, Angle of internal friction, etc. For effective control, avoid and reduce the subway next in action in the process of river construction risk, guarantee the construction task smoothly. For the construction of risk source analysis and identification of system construction of risk hierarchy, using analytic hierarchy process (ahp) and fuzzy comprehensive evaluation method to find the risk of subway construction. The results show that the construction has a "medium risk" and easy to rise to the "high risk".
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