Abstract: The system includes a track lining apparatus and two tamping apparatuses arranged in parallel, wherein the track lining apparatus includes two track lining hydro-cylinders, and the track lining hydro-cylinder communicates with a hydraulic control system through an oil inlet pipeline and an oil return pipeline; pressure sensors configured to detect pressures of the pipelines are provided on the oil inlet pipeline and the oil return pipeline; the tamping apparatus includes two pairs of tamping components arranged on both sides, where the tamping component includes a pair of packer arms and two pairs of packers; a dynamic force sensor is provided at a joint between the packer arm and the packer, and the dynamic force sensor can detect a transient dynamic downward insertion force generated when the packer is inserted into the ballast bed.

Abstract: The present application provides a virtual reality-based derailment accident passenger comfort degree monitoring system and method, wherein the system comprises a train dynamics calculation module, a train operation state virtual simulation module, a six-degree-of-freedom motion platform, a train seat, a head-mounted display, a human body monitoring sensor system and a monitoring data storage terminal. The system establishes a database of the injury degrees of passengers with different ages under the train derailment; the test cost is low, the safety coefficient is high, and the repeatability of the test conditions is good, wherein the comfort degree test data of the passengers under the same derailment inducement can be repeatedly obtained; the safety risk in the actual test is eliminated, so that the authenticity of the test result is ensured, and the test cost is low and the repeatability is high.