Guangming Daily reporter Zi Qian
At 16:45 on December 3, with the first fuxing and "Lancang" trains departing from Kunming Station in China and Vientiane Station in Laos at the same time, the 1,035-kilometer-long China-Laos Railway, which adopts Chinese standards, was opened for operation. In the early stage of operation, the China-Laos Railway will dynamically adjust the passenger and freight train operation plan according to the epidemic prevention and control situation and changes in passenger and freight volume demand. It is reported that with the customs clearance time at the port, passengers can arrive from Kunming to Vientiane in only about 10 hours at the earliest.
As a landmark project of the "Belt and Road" and The friendship between China and Laos, the China-Laos Railway will provide strong support for accelerating the construction of the China-Laos Economic Corridor and building a community of common destiny between China and Laos. The opening and operation of the China-Laos Railway has realized Laos' long-cherished wish from a "landlocked country" to a "land-linked country", which is of great significance to the close economic, social and cultural cooperation and exchanges between China and Laos.
Build China's "intelligent manufacturing" model railway
The China-Laos Railway is located in the southwest of Yunnan and the northern mountains of Laos, the overall terrain slopes from northwest to southeast, the terrain is undulating, the mountains are high and deep, and the relative height difference between the highest point and the lowest point is 2900 meters. About 70% of the area is mountainous, and the proportion of bridges and tunnels is as high as more than 87%, which is called a railway that "either passes through the hole or through the air".
In the process of construction, the builders of the China-Laos Railway overcame the difficulties of objective conditions and successively built 15 long tunnels of more than 10 kilometers, as well as the "brother bridge" across the Lancang River, the Jinghong Lancang River Bridge and the Olive Dam Lancang River Bridge, the Guanping Double-line Bridge with "one bridge spanning two roads", and the Nanxihe Four-line Special Bridge with a special bridge of more than 100 meters.
In order to better achieve the design goals of the China-Laos Railway, the construction team adopted intelligent line selection technology to optimize the line scheme. Xie Yi, chief engineer of the Second Academy of China Railway and the overall design of the China-Laos Railway, said that the terrain is steep and undulating with high piers and large span bridges, long tunnels to reduce the length of the extension line, saving project investment; for major undesirable geology to be avoided, can not be avoided, the use of the least impact on the project to pass; when passing through environmentally sensitive areas, carry out detours, tunnel roads, bridges and other multi-program comparison, the impact on the environment to minimize the impact on the environment.
"Take, for example, the China-Laos Friendship Tunnel, which is 9,590 meters long, is a cross-border tunnel connecting China and Laos, with a maximum local salt rock content of 80%. In view of the characteristics of salt rock 'strong dissolution, strong corrosion and expansion', we put forward the treatment scheme of 'grouting water blockage, all-inclusive waterproofing, reinforced material corrosion, circular reinforcement structure', and finally formed a tunnel structure type and waterproof system adapted to high-content salt rock formations. Xie Yi said that among them, the complete sets of technologies adapted to the anti-corrosion and anti-seepage measures of materials in the salt rock formation tunnel, the construction method process, the monitoring scheme, and the environmental protection treatment method of the salt rock slag disposal are the first in China.
"Tailor-made" to facilitate the travel of the people
In addition to the line design, the Lancang, which is operated by Laos in the China-Laos Railway, is also of interest. It is reported that the "Lancang" was jointly manufactured by the old China Railway Company organizing bidding and procurement and the enterprises affiliated to CRRC Group. In the design and manufacturing process, the State Railway Group relies on the mature technology of the China Fuxing Power Centralized EMU, and has made adaptive improvements for the cross-border transportation environment and route conditions, with the characteristics of advanced technology, safety and reliability, large passenger capacity, comfortable ride, and economical operation.
According to the relevant person in charge of China Railway International Co., Ltd., the name of "Lancang" originates from the ancient name of Laos "Lancang" Kingdom and the Lancang River flowing through China and Laos, which means that the two countries are good neighbors, good friends, good comrades and good partnerships. The exterior of the "Lancang" EMU adopts the three colors of the Lao national flag "red, blue and white", which means "the beauty of the national flag", and the interior of the EMU adopts two theme designs of "Champa Tianxiang" and "Splendid Rivers and Mountains".
"The maximum operating speed of the 'Lancang' EMU is 160 kilometers per hour, the EMU carriages are equipped with Chinese and Lao standard power sockets under each set of seats, and the passenger information display, broadcasting and service identification are in Chinese, Laotian and English, and are equipped with facilities such as dining cars, barrier-free seats, and blind signs." The person in charge said.
It is reported that in the early stage of the operation of the China-Laos Railway, the entire line put into operation kunming, Yuxi, Yuanjiang, Pu'er, Xishuangbanna, Mohan, Moding, Luang Prabang, Wanrong, Penghong, Vientiane and other 25 stations, of which Mohan and Moding station adopt integrated design and cross-border interconnection key technologies, set up domestic and international trains to the hair line, is a port station that can achieve rapid customs clearance function.
"In order to bring passengers a more convenient travel experience, we fully consider the national conditions and passenger habits of Laos, learn from the mature technology and business model of China Railway 12306, and 'tailor- and' a new ticket system for Laos, supporting multi-language services, multi-currency payment and settlement." Li Tianyi, a staff member of the China Academy of Railway Sciences, said that he hopes that through meticulous work, the China-Laos Railway can better serve the people of the two countries.
Draw a new blueprint for win-win cooperation
Before the completion of the China-Laos Railway, there was only one section of railway about 3.5 kilometers in Laos, and for a long time, traffic bottlenecks have become an important factor restricting the economic development of Laos. As a landlocked country surrounded by five countries, Nameless China, Vietnam, Thailand, Myanmar and Cambodia, Laos has no ports, is mostly mountainous, and its unique geographical location and complex terrain have seriously hindered the development of the country and are a veritable "landlock country".
"The opening and operation of the China-Laos railway will change everything, it will not only achieve the historic leap of Laos from a 'land-locked country' to a 'land-linked country', but also promote the economic development between China and Laos and truly achieve the goal of win-win cooperation." The relevant person in charge of the State Railway Group said that as an important backbone of the Pan-Asian Railway, the China-Laos Railway will also become the "golden key" for Laos to connect china to the north and Thailand, Malaysia and other ASEAN countries to the south, which will have a positive impact on the China-ASEAN Free Trade Area and the Greater Mekong Subregion Economic Cooperation.
In addition, in addition to the physical distance link, the China-Laos Railway is also a friendship bond between the people of China and Laos. In the process of construction, the builders of China and Laos worked together to overcome difficulties, participated in many public welfare actions such as rescue and rescue, medical assistance, and donations to fund education, and the project construction drove 110,000 local jobs in Laos, helped Laos build nearly 2,000 kilometers of highways and canals, and purchased more than 5.1 billion yuan of local materials and materials in Laos.
"After coming to work in the old China Railway, I learned more knowledge, used more high-end instruments and equipment, and later accumulated experience and technology, maybe I can set up a surveying and mapping company and cooperate with Chinese companies." Song Zhao Sai YaFeng, a 34-year-old Laotian employee of the China-Laos Railway, said that he has been working on the railway for four years and has watched the tunnels and bridges in the middle of the mountains bring a better living environment. "Without this railway, I wouldn't have the idea of going out of Laos. Now I want to get on the train right away and go outside and have a look. ”
Source: Guangming Network - Guangming Daily