11.8 METHODS OF INSPECTION OF CULVERTS

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

Авторы

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

Аннотация

In the article, an important aspect of train safety is the satisfactory condition of all railway infrastructure facilities and, in particular, small culverts. One of the factors adversely affecting the reliability of the railway trackbed is the humidity of the roadbed, which depends on the operability of drainage devices and culverts.

Keywords: railways, digital terrain model, pipe walls, artificial structures.

Introduction. The most common culvert is pipes of various designs (stone, concrete, synthetic materials and corrugated metal) [1,2,3,4,5,6,7,8,9,10]. Their number is 70% of the total number of culverts. Currently, stone pipes built at the beginning of the last century are functioning. A large number of deformations of the ballast and sub-ballast zones occur precisely in those places where artificial structures are located. To identify the causes of deformations , it is necessary to carry out a detailed diagnosis of the condition of the structural elements of the railway track by a complex of modern geophysical methods. In this paper, a complex is proposed, based on the georadiolocation method and includes the following measurements:

georadiolocation for delineating the places of subsidence of the ballast layer of the railway track;
georadiolocation for examination of soils adjacent to the arches and walls of the pipe, and delineation of areas with a violation of uniformity for further research;
drilling of culvert walls in the area of violation of uniformity of soils adjacent to the walls;
endoscopy of the pipe wall structure along the drilled well;
determination of the degree of soil compaction by static penetration;
sampling of soil for laboratory tests.