Abstract:
One of the most important and urgent problems is constructing roads in difficult soil conditions, ensuring
their strength, reliability, and normal operation. To create an efficient and competitive transport infrastructure in
Kazakhstan, the State Programme of Infrastructural Development “Nurly Zhol” for 2020–2025 was developed. Its main
objectives are to improve the technological, scientific, and methodological base, provide resources, and to attract “Big
Transit”. The paper presents the details of the survey carried out in one of road construction areas. Irrigation canals
and periodic and permanent watercourses represent the hydrographic network of the construction site. The analysis of
these features and field tests were included in the research. Stamp tests were performed to analyse mechanical
properties of embankment soil to provide more reliable information on the mechanical properties of the soil. Structural
and technological solutions were adopted based on the field tests and surveys of hydrological conditions. A numerical
simulation was used to determine the stability of the road embankment, the results of which showed maximum
deformations of 4.5 mm during the operation of road transport. Geosynthetic material was used to reinforce the
subgrade. The results of the study have shown that the analysis of factors affecting the stability of engineering structures
on difficult soil conditions helps to achieve some improvement.
