Railway Subgrade Regional Settlement Analysis And Prediction Study At De Zhou To Da Jia Wa

The purpose of this paper is to analyze the present situation and development trend of the ground subsidence in the area of 300m about De Zhou to Da Jia Wa?DK228+700^DK257+529?railway and numerical calculation and prediction of ground subsidence status and development trend,analysis on the harm of ground subsidence to subgrade engineering.By collecting the basic data of natural geography,meteorology,hydrology and social economy in the area of`DK228+700^DK257+529 tenders.According to the location of the measured subsidence g-round subsidence funnel and the law of subsidence,determine the typical study setction of this numerical simulation.By using numerical simulation software FLAC^3D,for DK228+700^DK257+529 tenders of more serious settlement areas,the numerical simulation of the settlement of the typical section under different pumping conditions is carried out,and its future settlement trend was predicted.This article is based on the railway engineering of De.Da.,for regional geological conditions,combined with the measured data analysis,Perform simulation and predictive analysis.And to explore the corresponding measures to deal with the settlement of the subgrade area.?1?According to the collected engineering information Analysis,on the history and characteristics of ground subsidence during the period from January 2009 to December 2013in the German railway section area,according to determined by the settlement of the ground the location of subsidence funnel and the law of subsidence,select the study area of this numerical simulation.?2?The main influencing factors and development trend of regional settlement are studied.Based on the measured data,the variation law of sedimentation with time is found out and analyzed.?3?By using numerical simulation software FLAC^3D,the settlement model of the roadbed and the ground is established in the area where the settlement of the railway is more serious.The final settlement in the area under the conditions of groundwater exploitation to predict,analysis of soil deformation after the end of pumping,pore water pressure and so on.?4?According to the characteristics of ground subsidence along the railway,combined with the project settlement control standards and requirements,Put forward a scientific and rational comprehensive measures for ground subsidence prevention and groundwater exploitation.