This iron bar is actually a patented technology product developed by researchers. It is called a low-temperature hot rod with a temperature measuring tube in the center. As a heat conduction system, it makes full use of the principle of heat conduction, and can bring the cold air in the frozen soil layer under the railway track to the surface soil layer in winter to ensure that the soil layer can remain frozen but not soft.
In summer, it can transfer the heat contained in the frozen soil to the air like an air conditioner, and keep the roadbed frozen forever through the exchange of cold and heat. It can be said that the application of this technology has greatly improved the stability of subgrade in frozen soil area and greatly reduced the burden of railway maintenance.
In addition, the hot rod technology also has the following advantages: it is not limited by subgrade structure, is not disturbed by noise, has long service life, does not need daily maintenance, and truly realizes environmental protection. It is convenient to install, and at the same time, it avoids digging the surface, does not destroy the original ecological landform of no man's land in Hoh Xil, and has low burial cost.
Brief introduction of Qinghai-Tibet Railway:
Qinghai-Tibet Railway, referred to as Qinghai-Tibet Railway for short, is a Class I national railway connecting Xining City, Qinghai Province to Lhasa City, Xizang Autonomous Region. It is one of the four major projects in China in the new century, the first railway leading to the hinterland of Tibet, and the plateau railway with the highest altitude and the longest route in the world.
The Qinghai-Tibet Railway was completed in two phases. The first phase of the project starts from Xining City, Qinghai Province in the east and ends in Golmud City in the west. 1958 started construction, 1984 was completed and opened to traffic in May. The second phase of the project starts from Golmud City, Qinghai Province in the east and ends in Lhasa City, Xizang Autonomous Region in the west. It started on June 29th, 2006 and was completed and opened to traffic on July 6th, 2006.
Qinghai-Tibet Railway runs from Xining Station to Lhasa Station; The total length of the line is 1956 km, including Xining-Golmud 8 14 km and Golmud-Lhasa 1 142 km. * * * There are 85 stations with the designed maximum speed of 160km/h (Xining-Golmud section) and 100km/h (Golmud-Lhasa section).
As of March 20 15, the operating speed of Qinghai-Tibet Railway was 140 km/h (Xining-Golmud section) and 100 km/h (Golmud-Lhasa section). By the end of June, 2022, Qinghai-Tibet Group had transported 260 million passengers, and the passenger traffic increased from 6.482 million in 2006 to187.05 million in 2026, including 31696,900 passengers entering and leaving Tibet.
On the morning of July 10, 2022, the groundbreaking ceremony of the housing reform and expansion project of Delingha Station, the upgrading and reconstruction project of Xining-Golmud section of Qinghai-Tibet Railway undertaken by China Railway Construction Engineering Group Co., Ltd., was held in Delingha City, Haixi Mongolian and Tibetan Autonomous Prefecture, Qinghai Province, marking the official start of the upgrading and reconstruction project of the west (Ningge) section of Qinghai-Tibet Railway.