The invention discloses an early-warning and prediction method for
sedimentation nearby a
tunnel construction working face. The early-warning and prediction method includes the following steps: collecting construction parameters, stratum parameters and ground surface
sedimentation parameters in real time, setting up a
database based on the construction parameters, the stratum parameters and the ground surface
sedimentation parameters, obtaining the multiple ground surface sedimentation parameters corresponding to the same or similar stratum parameters and the same or similar construction parameters, carrying out fitting and
regression analysis on the ground surface sedimentation parameters with the polynomial-included least square
fitting algorithm and the algebra interpolation method, obtaining a longitudinal ground surface sedimentation prediction curve, according to the longitudinal ground surface sedimentation prediction curve, in cooperation with input soil body parameters and input tunnel
radius, obtaining a transverse ground surface sedimentation prediction curve with the PECK formula, judging whether values represented by the longitudinal ground surface sedimentation prediction curve and the transverse ground surface sedimentation prediction curve exceed early warning values or not, and if the values represented by the longitudinal ground surface sedimentation prediction curve and the transverse ground surface sedimentation prediction curve exceed the early warning values, giving an alarm. According to the early-warning and prediction method, timely early warning and timely
processing on the ground surface sedimentation caused by metro
tunnel construction can be achieved, and therefore personnel and economic losses caused by the unreasonable construction process can be avoided.