Railway subsidence prediction and its security evaluation

摘要

Based on the principles of groudn subsidence and the mehtods of predicting railway movements and deformations, under complicated structure strata and any shape of excavated rooms, a railway subsidence pattern for predicting the security of railway in ground subsidence area is established in this paper. The methods for computating the values of the movments and deformations of the railway characteristics points are researched. The calcualting formulae for predicting the railway sinkage, incline deformation, curvature deformation, horizontal displacement and honrizontal deformation are provided. The methods for evalauting railway security and predicting disastrous accidents of railway in ground subsidence area are discussed. Finally, an actual example is geven for applying the mehtod for evaluating railway security.