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The results of edge stresses and stress measurements in the neck of the rail in a curve of radius 380 m, obtained in the tests on the effects on the way the locomotive CKD6e-2108, freight gondola 12-9941 and 12-9920, on railway line Almaty - Chu. The dependences of the stresses in the edges of the soles and neck rail on the speed of the test vehicles. The possibility of a transition from stress to lateral forces.

The object of the research is the solid rocks massif containing the Kuznetsovskiy tunnel with a length of 3890 m, the greatest depth of the deposit is 355 m, which crosses the mountain pass section of Sikhote-Alin on the Komsomolsk-Sovetskaya Gavan line of the Far Eastern Railway. The aim of the studies was a detailed analysis of the engineering and geological conditions of the facility and their impact on construction and operation. These data are obtained as a result of field research, laboratory testing of physical and mechanical properties of rocks, evaluation of water flow to drainage structures and analytical calculations. The massif is composed by terrigenous rocks - a rhythmic interlayering of heterogeneous grained sandstones, siltstones, gravelites, conglomerates, that are classified as strong. Layering has a steep drop and a sublatitudinal strike, deviating from the axis of the tunnel by 20 - 60 °. The tunnel axis is crossed by a system of faults of various capacities, their total capacity is 334 m, which is 8.5% of the length of the tunnel. The fault zones are associated with increased fracturing, reduced stability, in places abundant water inflows that have peaks in the summer, the threat of landslides, intense silicification and sulfide mineralization. The obtained monitoring materials by methods of recording natural pulses of the electromagnetic field of the earth (NPEFE) (EEMEMP) and dipole electromagnetic profiling (DEMP) allowed to draw a conclusion about the real picture of the development and forecast of the rock pressure, as well as the dynamics of the groundwater entering the mine for safe construction and operation. The state of the geodynamic conditions of the mountain massif is characterized as stable. Available data can be used as a starting point for assessing and forecasting aspects of the construction and operation of the second stage of the tunnel.

The article presents theoretical studies of the interaction of the compacting machine with the soil of the road bed of the railway embankment. The results of the studies make it possible to establish the parameters of the sealant, which ensure an efficient flow of the compaction process of the ground environment. It is established that the rigidity of the working body of the roller must vary over a wide range. Experimental studies of a new sample of the working body confirmed the possibility of adjusting the rigidity in the required range for the effective use of vibrating rollers in the construction of railroad soil embankments.