Thrust Prediction Method for Rescue from Collapsed Subway Tunnel Using Propulsion Pipe Construction Method

摘要

An object of the present invention is to provide a thrust force prediction method for rescue by a propulsion tube construction method for a collapsed subway tunnel. SOLUTION: The present invention relates to a method for predicting the thrust of a propulsion pipe when a subway tunnel collapses and is rescued by a propulsion pipe construction method. The method includes the steps of determining the height H of the collapsing block and the unit volume weight γ; determining the distance H1 from the central axis of the propulsion tube to the bottom of the tunnel; Determining the horizontal length L of the landslide block at the central axis of the propulsion pipe; determining the cohesive force c and internal friction angle of the collapsed block; and the interface between the collapsed block and the outer wall of the propulsion pipe. Determining the frictional force τ; determining the number m of propulsion tubes within a horizontal length L and the number n of whole propulsion tubes; determining the length L3 of the normal section of the propulsion tube and the length L4 of the enlarged head section; and determining the total thrust T required for the propulsion tubes. [Selection figure] None