The picture shows the Yakang Expressway
Perhaps many people know that China has the title of the so-called infrastructure demon, but few people know exactly how strong China's strength is, in fact, China has already reflected its strength in many projects, such as the Yakang Expressway, which is known as the world's most difficult highway, is from China's hand, and this highway is known as the sky above the clouds? Crossing the Hengduan Mountains with complex geological conditions, many foreign experts have called out after looking at it is too incredible, and China has really built a highway above the clouds? So how spectacular is China's $23 billion Yakang Expressway? In fact, dozens of bridges have been built along this sky road, some of which are even directly built on the mountainside, which is very spectacular from a distance.
Yakang Expressway is a highway connecting the two cities of Ya'an and Kangding in Sichuan, is currently one of the most difficult to build in China, this highway is characterized by its passage through the Hengduan Mountains, hengduan mountains are very famous geological conditions complex area, in the Hengduan mountains to build a variety of infrastructure projects are very difficult, and Yakang expressway directly across the Hengduan mountains, across a number of mountains and valleys, in order to cross this geological complex area, Yakang high-speed bridge-tunnel ratio reached 82%, This means that 82% of the entire highway mileage is built on bridges and tunnels, so the overall construction is very difficult.
The picture shows the Yakang Expressway Bridge
However, China was not intimidated by such difficulties and dangers in the end, in order to build this very important highway for Sichuan's economic development, Chinese engineers came up with a spirit of hard work and a lot of high-tech engineering equipment, during the construction of the expressway, thousands of Chinese workers and engineers have been living on the site of the Hengduan Mountains, in order to ensure the progress and safety of construction, engineers have conducted a detailed survey of the local area before the construction of each section of the road, marking all the areas with hidden dangers. In the project, try to avoid these hidden danger areas.
In this project, the biggest difficulty encountered by China is the construction of the Erlangshan Long Tunnel, this tunnel is 13 kilometers long, the regional conditions are very complex, the entire tunnel is located in the 8-magnitude seismic zone, need to consider the severe seismic problems, but also through 13 large-scale fault zones, the need to formulate a detailed and complex construction plan, and the entire tunnel is also located in the Sichuan Nature Reserve, while meeting the construction requirements, but also need to consider the impact of the project on the environment, the construction of the restrictions are quite large.
In order to complete this tunnel on time, the Erlangshan Tunnel began construction more than two years earlier than other projects, and Chinese engineers invested a lot of manpower and advanced equipment, including three highly automated hydraulic drilling vehicles, and a large number of other intelligent equipment, and this tunnel will cost an average of more than one ton of blasting equipment every day when it is built. But the average daily excavation is only 3.6 meters, and when building the tunnel, the Chinese engineering team also needs to be constantly alert to possible geological disasters, and a considerable amount of time in the entire project is spent dealing with various geological disasters.
And China's efforts finally paid off, some time ago the last section of the Yakang Expressway announced that the entire line was opened for use, which means that the entire Yakang Expressway project was fully completed, and its successful completion greatly facilitated the traffic of the two places, shortened the local traffic time by more than two hours, and promoted the economic development of the whole Sichuan.