High-speed railway subgrade bed sloshing mud fine particle migration detection device

Abstract

The application relates to a detection device for fine particle migration detection of high-speed railway subgrade bed turbulence and mud discharge, which belongs to the field of railway slop and mud discharge detection. The mechanism loads the impact load into the sample filling chamber; the water supply system feeds liquid into the sample filling chamber along the vertical direction through the liquid inlet; There are multiple collection holes at intervals in the direction; the reversing switch assembly is arranged in the collection conduit to open and close the collection holes, so that only one of the collection holes in different positions is connected; through the above scheme, it is not only possible to detect the vertical It can also detect the migration of mud and mud in the lateral direction, and can reflect the influence of the boundary on mud and mud during the test from the side, so as to ensure that the results of fine particle migration of mud and mud in the test are relatively accurate.

Description

technical field [0001] The invention relates to the field of detection of mud and turbidity of railways, in particular to a device for detecting migration of fine particles of mud and turbidity of high-speed railway subgrade beds. Background technique [0002] The subgrade is an important part of the railway line, and its function is to bear the dynamic load of the train and the load of the superstructure. Slurry and oozing of subgrade bed is a new type of disease of railway track, which has an important impact on the safety and comfort of line operation. Occurrence of the phenomenon of slurry and mud discharge may not only cause uneven subsidence of the subgrade, affect the normal operation of the train, increase the maintenance cost of the line, but may also pose a great safety hazard to the operation of the train in severe cases. [0003] The current research on mud and mud pumping of railways relies on on-site surveys and indoor model tests. The existing indoor simulati...

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Problems solved by technology

[0004] This application is to solve the existing high-speed railway subgrade tests on mud-flushing diseases, which are mainly completed by using one-dimensional seepage experiments, so that the migration rules of mud-flushing fine particles obtained in existing tests can be used as a reference. The value is not high enough , which leads to the problem that accurate and reliable theoretical support cannot be provided in terms of the formation, evolution and impact on the project. This application designs a detection device for fine particle migration of high-speed railway subgrade mud. The specific scheme adopted is :

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