On October 8 this year, another incident that surprised the world occurred on Black Sea in eastern Europe. The Crimea Bridge (also known as the Kerch Bridge) across Kerch Strait was bombed. A train multi-tank tank carriage caught fire on the adjacent railway. The conflict in Russia and Ukraine further deepened, but how the bridge was bombed is still a mystery.
Crimea cross-sea bridge is a bridge connecting Crimean Peninsula with Russia. The role of transportation is very important and is considered to be the largest project since its establishment. It was built in 2019 and spent nearly 4 billion US dollars. It is not an exaggeration to measure Russia's economic situation. It is a bridge built with the whole country. Unexpectedly, it was bombed after only three years of use.
How did this bridge be bombed? Careful friends may know that the source of the explosion comes from a large truck, , but since the Russian-Ukrainian war started, the passage of this bridge has been controlled, that is, every vehicle passing through this bridge will be inspected. The explosion truck has also been inspected at the checkpoint before passing through the bridge. It has been confirmed that the owner of the truck that exploded on the Crimea Bridge is a resident of the Krasnoyarsk Krai region. The video during the inspection has been released. The inspectors found that the vehicle documents were legal, and there were no dangerous goods in the carriage, and it is even more impossible to have easy-to-identify explosives. It can be said that there was no abnormal situation, so they were released. So why did the truck suddenly explode when it arrived in the middle of the bridge?
Maybe many friends still remember the explosion in the port of Beirut, Lebanon, two years ago. On the afternoon of August 4, 2020, a huge explosion suddenly occurred in the port area of Beirut, the capital of Lebanon. The important facilities of the entire port were almost razed to the ground, and the accident caused more than 190 deaths. Afterwards, it was found that the explosives were originally 2,750 tons of ammonium nitrate in the warehouse of Beirut 12, the explosion occurred due to poor storage. In terms of explosion energy, the explosion of 1 ton of ammonium nitrate is equivalent to the explosion energy of 0.53 tons of TNT explosives, and the explosion power of 2,750 tons of ammonium nitrate is equivalent to the explosion equivalent of 1,457 tons of TNT explosives, and the power is quite terrifying.
The scale and cause of the ammonium nitrate explosion incident in Tianjin Port, my country on August 12, 2015 are similar.
After the Crimea Bridge was bombed, some people speculated that the explosives were probably ammonium nitrate. Because this kind of thing can make fertilizer, it is generally considered that ordinary chemical products are rarely embargoed on the road. Before going to the bridge, they can be released by inspectors. This should have been planned before.
The explosion vehicle was a very long van truck. It is estimated that it carries more than 10 tons of ammonium nitrate. The explosion power may be equivalent to the explosion equivalent of more than 5.3 tons of TNT explosives. There is no problem in blowing up a bridge. The picture shows that one side of the Crimea Bridge was indeed blown off, and a bridge deck fell into the sea. However, the Crimea Bridge was opened to traffic on the 9th. A passable metal bridge deck was installed on the bombed bridge deck, so that the bridge could be restored to normal use. Why does ammonium nitrate, which can be used as fertilizer, explode? The chemical formula of ammonium nitrate is NH₄NO₃, which generally does not explode, but if it occurs at high temperatures, high pressures, encounters redox agents, or encounters electric sparks. There will be an explosion, so it is also an insensitivity explosive. Some people speculate that the explosion of the Crimea Bridge this time is likely to be a detonator placed in the vehicle in advance. It detonated when the vehicle drove to the middle of the Crimea Bridge, creating this bridge bombing that shocked the world.
Reference:
"The Paper" October 9th article "Explosion of the Crimea Bridge: fog, clouds, and perhaps exquisite calculations"
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