High speed railway without clear ballasts

technical field [0001] The invention belongs to the technical field of railway construction. Background technique [0002] The railway with heavy ballast stacked under the rails has the dual advantages of load bearing and shock absorption. Therefore, no matter whether it is an existing line reconstruction or a new line, the lines on which bullet trains travel are generally dominated by ballast tracks to accommodate both passenger and freight transportation. need. However, the gravel is stacked in a trapezoidal shape without restraint, and the maintenance work is extremely heavy. Especially after the speed of the EMU reaches 250 kilometers per hour, a strong cyclone will form at the rear of the car belly, and the gravel will be lifted up, causing great danger to the train operation. For this reason, the high-speed rail industry has mechanically fixed a speed of about 250 kilometers per hour as the dividing line between ballasted and ballastless, and as the dividing line bet...