Ensuring the stability of railway subgrade using geotextile materials on high-speed rail sections

The statement analyzes the performance of the ballast prism and railway subgrade. Based on this analysis, a two-layer geotextile reinforcement system is proposed. The structural configurations of the railway subgrade and ballast prism, as well as methods for reinforcing subgrade slopes, are investigated with consideration of high-speed and very high-speed railway operation. A formula is presented for calculating the slope steepness of cuttings under high-speed train traffic, taking seismic effects into account. An empirical formula for determining slope inclination is recommended. The main advantages of geosynthetic reinforcement are identified, including a reduction in labor and material costs during subgrade slope stabilization works. The selection of the most rational and technically justified structural, technological, and organizational solutions does not automatically guarantee the full realization of their potential efficiency. The developed structure and construction technology are considered effective for new railway construction and for widening existing railway embankments in areas without wind-erodible soils. The proposed subgrade slope reinforcement system ensures the stability and overall structural integrity of railway earthworks.

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