What are the measures to strengthen the train s turnback capacity

1. Optimize the layout of the switchback line: In optimizing the layout of the switchback line, the effect of shortening the time between turnbacks and departures significantly changes the turnback mode. When the switchback line is arranged at a certain point, changing the switchback mode can shorten the turnback departure interval, for example, when the switchback line is arranged as a crossover line in front of the station, the side-to-straight switchback is changed to an alternate turnback.

3. Adopt automatic turnback mode: automatic turnback mode means that the turnback shunting approach handling and approach unlocking are automatically controlled by ATS according to the condition of the train turnback and transportation, and the train in and out of the switchback line runs in and out of the ATO driving mode. After adopting this measure, the processing time and the switchback running time can be compressed, and the purpose of accelerating the train turnback can be achieved.

4. Optimize the track circuit design: through the approach unlocking in advance, the subsequent switchback approach or pick-up approach is carried out in advance, so as to reduce the waiting time in the turnback process.

5. Turnout selection and optimization design: The use of No. 12 turnout in the automatic turnback station helps to improve the speed of the lateral turnout of the train and compress the turnback running time.

6. Preset a train on the switchback line: when turning back after passing through the station, if the interval between the train arriving at the turnback station is large, the current train has been vacated to start the main line, and the latter train has not yet entered the switchback line or is still in the process of staying on the switchback line, at this time, a train can be preset on the switchback line to speed up the train turnback and improve the train turnback capacity.

This paper demonstrates that the turnback-departure interval is the basic parameter that determines the turnback-departure interval of trains, proposes a calculation method for the turnback-departure interval, analyzes the influence of special train intersections on the turnback-departure interval, and proposes measures to strengthen the turnback-departure capacity of trains according to the factors affecting the turnback-departure interval.

1. Crossover line turnback.

Crossing line switchback should be the most common way to turn back, and all kinds of railways can use the crossing line to turn back. The crossing line is divided into a single crossing line and a double crossing line, and the double crossing line, as the name suggests, is composed of two single crossing lines, some of which cross together.

2. Circular return line turnback.

The bulb line is the common name for the loop return line. This line can not only turn back on the circular return line, but also turn back on the crossing line, and turn back on the circular return line: the train only needs to go forward after arriving at the terminal station, and does not need to change the cab or change the locomotive, etc., and can turn back directly.

3. Triangle switchback.

When the train arrives at terminal station A, it will continue to travel to place B, turn back to the posture, travel to point C, turn back, and drive back to place A. Of course, you can also set up stations at A, B, and C.

4. Double-line turnaround stations on both sides of an island.

When the passenger flow of the station is relatively large, this platform form can be adopted. The middle island platform is used as the upper platform, and the two sides of the platform are used as the lower platform, which is not covered by the line but the passenger flow line is clear, and a large number of ** interweaving is avoided, and the width of the middle island platform can also be reduced, and the line spacing is narrowed, so as to ensure the ability to turn back.

5. Island station.

The island station can avoid the need for passengers to choose the platform, and passengers entering the island platform can get on the train smoothly regardless of which lane the train stops on. Since the width of the island platform is generally more than 10 m, the line spacing is at least 13 m or more.

Compared with the side station, the distance between the switch area in front of the station and the platform is greatly increased, and the interference time of the train in the switch area is long, and the turnback capacity is lower than that of the side station. In order to improve the return capacity of the folder, the width of the island platform is usually reduced as much as possible, or the appropriate number of the switch in front of the station is selected to increase the speed of the train entering the station.

Crossover switchback, circular return switchback, triangle switchback.

Crossing line switchback should be the most common way to turn back, all kinds of railways can use the crossing line to turn back, and the crossing line is divided into single crossing line and double crossing line, double crossing line as the name suggests is composed of two single crossing lines, some cross together. But some double crossing lines (such as monorail, maglev, rubber tyre railway) are due to the fact that these railways are difficult to cross like ordinary railways, or some special ordinary railway double crossing lines.

The train turnback mode can be classified as follows according to the conditions:

1.According to the location of the station switchback line, it is divided into: front of the station switchback, after the station switchback, mixed switchback;

3.According to the different train intersections, it is divided into: one-way switchback and two-way switchback.

Switchback Mountain is the maximum number of trains that can pass in one minute on the Switchback Line. （）

a.That's right. b.Mistake.

Correct answer: B