11.10 GEORADIOLOCATION DIAGNOSTICS OF AN EARTH BED IN A RAILWAY TRACK

Eshonov Farhad Fayzullakhuzhaevich,  Umaraliev Shokhzhakhon Mukhammadruzi ugli,  Embergenov Avezmurat Bekmuratovich.

Mualliflar

Eshonov Farhad Fayzullakhuzhaevich, Umaraliev Shokhzhakhon Mukhammadruzi ugli, Embergenov Avezmurat Bekmuratovich.

Abstrak

The georadiolocation method is based on the emission of electromagnetic wave transmitters and the registration of signals reflected from the boundaries of the layers of the probed medium with different permittivity. Such boundaries of the section are, for example, contacts between dry and water-saturated soils (groundwater level), between rocks of different lithological composition, between rock and material of artificial origin, between thawed and frozen soils, between loose and bedrock, etc.

Keywords: class of rolling stock; comparison of classes of elements of the structure with the load class; clarification of the boundaries of the use of pipe structures according to current standard projects; consideration of the actual operating conditions of the operated pipes.

Introduction. Georadiolocation diagnostics should be carried out specialists trained to work on the appropriate equipment and proficient in this technique. Georadiolocation diagnostics is used for the purpose of:

- reducing the volume of labor - intensive and expensive engineering and geological work during the survey of the roadbed;

- obtaining initial data for the design, development of measures to strengthen the roadbed and its foundation;

- obtaining initial data for capital repair planning reconstruction (modernization) of the upper structure of the track;

- determination of the causes of sudden deformations of the upper structure of the track or the roadbed;

- carrying out quality control of work during repair, reconstruction, construction of the roadbed.

Radar survey on the roadbed can be carried out with the help of ground-penetrating radars that meet the requirements of work on the operated roadbed. Stationary ground–penetrating radars mounted on wagons or other vehicles can be used for georadolocation shooting, or portable ones - intended for use during detailed shooting. The quality of measurements depends on the correctly selected parameters and operating modes of the equipment and the appropriate selection of antennas. To work at different depths of the studied thickness, it is necessary to choose antennas operating in the appropriate ranges. Georadar is a device designed to solve a wide range of tasks during the diagnostics of the roadbed. The ground-penetrating radar should provide real-time output to the computer display of the radar profile with simultaneous recording to its hard disk. The software must support the appropriate type of color or monochrome display, allow you to display the sensing data in various forms. Data reception should be provided in continuous mode /main/ and in step-by-step mode with accumulation. Step-by-step mode is used whenthe maximum possible depth of sensing for solving special tasks. Continuous mode gives the maximum spatial solution[1,2,3,4,5,6,7,8].