Every train will whistle for 30 seconds when it passes the bridge. Do you know which bridge this is?

Every train must whistle for 30 seconds when it passes the bridge. This is the Longgudian Bridge, which is located in Heijing Township, Lufeng County, the steepest section in chengdu-kunming railway.

Chengdu-kunming railway starts from Chengdu, Sichuan Province in the north and crosses Minjiang River and Qingyi River. Through Emei, along the Dadu River, across the size of Liangshan; Shidu Niuri River and arrived in Xichang; Eight spans of Anning River and Jinsha River; More than 30 times detoured Longchuan River Canyon, crossed Hengduan Mountains, and arrived in Kunming, Yunnan in the south. The total length of the line is 1096 km, creating the highest railway in China 18 project.

1July, 958, chengdu-kunming railway started construction. Due to the harsh environment in the passing area of chengdu-kunming railway, frequent geological disasters such as earthquakes, mudslides and floods, and unreasonable construction technology during the construction period, accidents occurred frequently after the line was opened and operated. Among them, the 198 1 chengdu-kunming railway bullet train rear-end collision was the most serious passenger casualty accident in the history of China railway.

Each train will whistle for 30 seconds, mainly to commemorate the China soldier bear and more than 300,000 soldiers and civilians who died in the process of building the bridge.

At that time, there was a special military class in China, called the Infrastructure Corps of Engineers. At that time, it was mainly these infrastructure engineers who were building bridges. Longgudian Bridge was the most difficult part of the construction at that time. At that time, due to the weather, there were problems in the construction process. Monitor Xiong went to have a look. Unfortunately, he didn't stop and fell directly into the pier being watered. The cement sets so fast that it can't be rescued for a while. Bear, only 2 1 year old, is at the last moment of his life. Let me know when the bridge is repaired! ?

If we want to take out the bear's body, we must blow up the bridge, but this cannot guarantee the integrity of the bear martyr's body. At that time, the bridge repair technology was not advanced, and the progress of pier construction was very slow. For the sake of construction progress, it was finally decided to combine the remains of Xiong Martyrs with the wharf.

That's why every train has to whistle for 30 seconds.