Deformation monitoring method for existing railway line

Abstract

The invention relates to a deformation monitoring method for the existing railway line, which comprises the following steps: (1) selecting right types of total stations and prisms; (2) carrying out point distribution on a line required to be measured, and installing the prism at each measuring point; (3) through site survey, burying a sufficient quantity of datum points and station points convenient to observe the prisms; (4) carrying out real-time measurement on the prisms through the total stations arranged at the station points so as to obtain the three-dimensional coordinate of each prism; and (5) through comparing the three-dimensional coordinates of the prism during different time periods, calculating the deformation value and change rate of the line during the period. The invention is a deformation monitoring method for the existing railway line, which is scientific in design and easy to implement. By using the method disclosed by the invention, the data of settlement and horizontal displacement of the existing railway line in operation can be accurately acquired under the premise of not affecting the operation of the existing line, thereby guaranteeing the necessary monitoring frequency; and the acquired data represents the deformation of the line during all time periods, and finally, the purpose of carrying out real-time monitoring on the existing railway line and guaranteeing the safe operation of trains is achieved.

Description

technical field [0001] The invention relates to the field of railway monitoring methods, in particular to a method for monitoring deformation of existing railway lines. Background technique [0002] When engineering construction is carried out around the existing railway line or the railway line passes through areas with frequent geological activities, the probability of rail settlement and displacement is very high. Once the deformation value of the rail track exceeds the warning value, the operation safety of the train will be affected. In order to ensure the safe operation of trains, it is necessary to monitor the rail deformation of existing railway lines. At present, there are mainly the following monitoring methods: 1. Static leveling method: It does not affect the operation, but it can only measure the settlement and cannot measure the horizontal displacement, and the equipment is greatly affected by the surrounding environment, and the monitoring components are relat...

AI Technical Summary

Problems solved by technology

At present, there are mainly the following monitoring methods: 1. Static leveling method: It does not affect the operation, but it can only measure the settlement and cannot measure the horizontal displacement, and the equipment is greatly affected by the surrounding environment, and the monitoring components are relatively large , the sleeper deformation cannot be directly measured, and the reference point of the static level cannot be set in a stable area far away from the line, and the error is large

2. Traditional leveling: its accuracy is high, but the measurement time and frequency are limited, and only settlement measurement can be carried out, and horizontal displacement measurement cannot be carried out

In addition, personnel need to enter the operation area to work, which affects the operation of existing lines

3. Embedding settlement piers or displacement monitoring marks in the subgrade: the embedding is difficult and the measurement error is large

[0003] To sum up, the above three commonly used monitoring methods have their own advantages and disadvantages, and their measurement results have large errors, and none of them can meet the requirements of measuring the rail settlement and the horizontal displacement of the rail without affecting the railway operation. Monitoring requirements for data collection

Images