※ This video is part of <Extreme Job - Inje Tunnel Construction Part 1-2> broadcast from January 4th to 5th, 2012. Deep in the mountains at the foot of Mt. Bangtaesan in Inje-gun, Gangwon-do, the sound of blasting that shakes the heavens is heard every day. This is because the construction of the Inje Tunnel, which will shorten the distance from Seoul to Yangyang to 1 hour and 40 minutes, is in full swing. This tunnel, which goes through several mountains of the Baekdudaegan Mountains including Mt. Bangtaesan in the middle of the Chuncheon-Yangyang Expressway (length 88.8 km), is a whopping 11 km long! It is more than twice the length of the longest tunnel in Korea, the Jukryeong Tunnel (4.6 km) on the Jungang Expressway, and the 11th longest in the world. Simultaneous excavation in all four directions! The Inje Tunnel boasts a massive 4-lane round trip! We closely report on the Inje Tunnel construction site, where workers work 24 hours a day, regardless of the midwinter cold, and shed light on the valuable sweat of workers creating a new road. In the morning, when the dusk of dawn has not yet disappeared, preparations for tunnel excavation are in full swing. For them, there is no distinction between season and day and night. This is because they are deployed in shifts without a single minute of rest 24 hours a day, in order to shorten the construction period. - The word 'makjang', which refers to an extreme situation, refers to the tunnel where excavation work is done. The faces of the workers, each wearing a thick mask and entering the 'makjang', are full of determination. Inje Tunnel construction excavates in eight sections simultaneously to shorten the construction period. The excavation method is blasting using gunpowder. A whopping 300 kg of gunpowder is loaded at a time to destroy solid rock. The shock wave generated at this time is so powerful that it reaches 5,000 m/s, and has the power to blow away rocks weighing more than 20 kg 100 m away. Dangerous work that requires careful attention even for a single blast! It is literally a 'dead end' where they sweat day and night for a mere 3.5m of excavation! When blasting is complete, a huge tire that is much taller than a healthy adult appears. It is a 'rough dump truck' that even construction site veterans cannot easily see. A line of super-large trucks that can move a whopping 50 tons of weight is lined up. The estimated amount of rock after completing the 22km round trip excavation is 2.6 million㎥! Since it is a world-class site, the large heavy equipment mobilized is overwhelming compared to other construction sites. A quiet dead end just before blasting. A tense countdown to blasting! However, even with the silence, no explosive sound is heard. The gunpowder did not explode. The person in charge, unable to find the cause, decides to go into the dead end. 300kg of gunpowder is waiting to explode! Since tunnel construction is a place where accidents occur frequently, it is essential to strengthen the safety awareness of workers. In order to control their attitude toward the site, they hold a safety prayer service. However, accidents big and small happen anywhere, such as the tires of a vehicle heading to the end of the tunnel collapsing due to sharp rocks. Since one delay affects other work, the workers repairing the car are even more anxious. As important as excavation is reinforcing the roughly destroyed surface. This includes shotcrete work, which sprays concrete onto the wall, and rock bolt installation, which firmly secures the rock. The difficult work of driving 2m steel bars into the rock while leaning on a crane continues without rest. At this time, the workers on site discover a cracked area dangerously protruding from the ceiling of the tunnel... For one excavation, about 10 tasks are organically performed. However, the excavation range is only 3.5m. Those who endure hard labor for twelve hours a day are only committed to creating a 'new road'. The completion of the Inje Tunnel is expected to reduce carbon dioxide by 13,947 tons per year, reduce logistics costs by 1.3 billion won, create 1.1 million jobs, and increase income by 1.9 trillion won. ✔ Program name: Extreme Jobs - Inje Tunnel Construction Part 1-2 ✔ Broadcast date: 2012.01.04 #TVRoboBondeoGolladunDocumentary