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Author:Yunnan released Time:2022.07.01

Demon Highway Connection

Gongshan Dulong Nu Nu Autonomous County, Nujiang Laushan Autonomous Prefecture

Heqing Tibetan Autonomous Prefecture Deqin County

This beautiful mountain road is accompanied

Because you want to cross the Biro Snow Mountain

Limited by climate conditions

After the snow seal the mountain

December from December to June of each year

The road cannot pass

Photo by Zhang Jun, a beautiful scenery along the Degong Highway

Now

Good news came!

Degong Highway Peacocks Mountain Tunnel

Penetrate

On June 30, the longest tunnel and heavy difficulty control project of the Demon Highway in China Railway Twelfth Bureau -the survival of the Peacock Mountain Tunnel, which opened up the key "throat" of the western Yunnan Tourism Ring Road.

Peacock Mountain Tunnel runs through the entire line

Demon Highway 98.2 kilometers in length

It is connected to Nujiang Gongshan and Diqing Deqin

The only traffic road

Also from Yunnan Da Yunnan Tourism Ring Road

The last "puzzle"

The total length of the Peacock Mountain Tunnel is 2545 meters

Belo Snow Mountain, located at 3400 meters above sea level

After traffic

From Gongshan to Deqin will no longer need to cross

3882 meters of Peacock Mountain Pass

It will also avoid

After the winter snow causes the peacock mountain mouth to be blocked

From Gongshan to Deqin

Nearly 1,000 kilometers around Dali

For geographical blocking of Bo Deqin and Gongshan

Enhance economic and cultural exchanges between the two places

Consolidate and expand the results of poverty alleviation between the two places

It is very important

Photo by Yang Jianwei

How difficult is it to get through the Peacock Mountain Tunnel?

Peacock Mountain Tunnel

It is the longest and the highest altitude in Demon Highway

The worst climate and the most difficult construction

Single engineering

in construction

The builder overcomes the water in the cave

Rain rain, blizzard, landslide, and roadbed collapse outside the cave

A series of problems such as difficulty transportation difficulties

Peacock Mountain Tunnel Cave entrance

On February 4, 2022, Blizzard was under the site of the Peacock Mountain Tunnel tunnel, which crushed 32 houses, 4 steel processing sheds, and 3 mixing warehouses at the entrance and exit of the tunnel. The avalanches that occurred during the tunnel exported duty room was rushed into a deep trench of 50 meters. The deepest snow was 5 meters, and the snow road section was 30 kilometers long. The project department invested 4 loaders and 3 excavators, and after 8 days, it took a 3 -meter -wide road.

Building crushed by Blizzard

The road is smooth. For the builders of the Peacock Mountain Tunnel, they have always been looking forward to and extravagant hopes. From the flat asphalt road to the exit of the tunnel, a bumpy "dirt road" of 42 kilometers long and 2000 -meter height difference needs to be passed. Affected by the three -dimensional climate and community climate, the rain and snow weather in the tunnel site reached more than 240 days throughout the year. Frequent rainfall and snowfall, coupled with the crushing and poor stability rock body, the disasters such as floods, falling stones, and mudslides were frequent. normal. According to incomplete statistics, the road has interrupted more than 220 times since the construction of the builders in 2020.

Blizzard causes the transportation road interruption

In order to maximize the smooth transportation of slag and material and equipment, the project department has established road rescue and rescue teams, equipped with loader, excavators and other equipment, 24 -hour patrol inspection, and timely cleaning up snow, falling stones and landslides, which is both guaranteed to guarantee project construction. Driving safety and unblocked, and also participated in emergency rescue in the surrounding areas at any time.

Road rescue rescue team grab the road

The abundant precipitation and snow -capped water melt, and the unique directional structure make the Peacock Mountain Tunnel a "polyperpin", with a maximum amount of water flowing 91,000 cubic meters. The builder needs to wear raincoats and rain pants at 5 to 6 degrees Celsius. Operations in "Shui Cun". Coupled with the crushing of the rock body, poor stability, and accounted for more than 90%of the tunnel rocks. Class IV bad feed rocks are rich in high -pressure water. It will also cause empty and falling rocks.

Sudden flood flooding import construction work surface

On June 21, 2021, the peacock mountain tunnel's imported palm noodles were surging. The water volume of 3,100 cubic meters per hour, equivalent to 1.5 standard swimming pools, instantly drowned the 12 -meter -wide and 10 -meter -high anti -slope construction work surface. As a result, the construction is completely stagnant. After 71 consecutive days of drainage, blocking and cleaning, the builder returned to normal construction.

The builder brings water work

In order to know the water content of the rock body in advance, the builder adopted the TSP advance geological radar to detect the front surrounding rocks, and timely adopt advance drilling measures to release pressure, drainage drainage, and prevent repeated tunnel water. Since the construction of the builders, there are more than 70 large -scale pumping equipment, 10.4 kilometers of pumping pipes laid, and more than 50 water treatment of water, ensuring the safety of the tunnel.