"Red Railway" Han ba'nan high speed railway (Nanchong to the middle section of BA) officially started

Beijing, Chengdu, December 25 (Wang Peng) reporter learned from China Railway No.5 survey and Design Institute Group Co., Ltd. (hereinafter referred to as China Railway No.5 Design Institute) on December 25 that the construction of the new hanbanan (Hanzhong Bazhong Nanchong) Passenger Dedicated Railway (Nanchong to the middle section of Pakistan) was officially started on the same day, which will end the history that there is no high-speed railway in Bazhong City, the "old red area" in China, and it will become the northeast of Sichuan Province, China An important channel to distinguish Sichuan. On the day of the commencement of

, the Design Institute, China Railway fifth Design Institute, disclosed how the "red Railway" could cross the mountains and rocks in Northeast Sichuan and bring hope for the rejuvenation of the old revolutionary base area. As a "red Railway", "poverty alleviation Railway" and "revitalizing Railway", the

hanbazhong high speed railway is located in the core area of Sichuan Shaanxi old revolutionary base area and runs through the core areas of Sichuan Shaanxi revolutionary base areas such as Yilong, Bazhong and Nanzheng, with a total length of about 290 kilometers, including about 50 kilometers in Hanzhong, Shaanxi, 135 kilometers in Bazhong and 105 kilometers in Nanchong, Sichuan The timing speed is 250 kilometers. According to

, as the key to poverty alleviation and land development railway, hanba Nanan high speed railway has been incorporated into the medium and long term railway network planning, which is an urgent need to implement the strategy of western development, improve the regional advantages along the line, accelerate the integration into the construction of China's "belt and road" and the Yangtze River economic belt, and promote the coordinated development of regional economy. The completion of the

railway will become an important transportation infrastructure for the economic development of the old revolutionary base area, which is of great practical significance to the implementation of the national decision-making and deployment of targeted poverty alleviation and poverty alleviation, and to the improvement of the living standards of the residents along the line. The Northeast Sichuan area of

is known for its complex unfavorable geology, dense regional rivers and sensitive environment. It is understood that the design team creatively launched the air ground linkage mapping scheme, which laid a good foundation for the orderly promotion of the high-speed railway in hanba'nan.

"the Han ba'nan high speed railway survey site is located in the southwest mountainous area. It was in the rainy season, with high mountains and dense forests. However, the surveying and mapping personnel of the project completed the" fire line task "of the early surveying and mapping in only 15 days through high-intensity operation." Han Bingying, the chief designer of the Hannan project of creec, said.

Han Bingying told reporters that in addition to the continuous field survey, the mapping personnel also creatively formulated the air ground linkage operation scheme to cope with the adverse situation of rainy and dense mountains and forests on the site. The UAV 3D laser scanning system team was dispatched to take aerial photos to obtain big data, and then professional aerial survey software and image data were integrated to carry out fine classification In the whole process, only the UAV lidar survey completed 630 cross sections, accounting for half of the survey task of the whole construction site. The terrain conditions along the route from Nanchong to the middle section of the railway are the most complex, which is the first time to build high standard high-speed railway in Northeast Sichuan. In order to ensure the green crossing and maximize the protection of the ecology along the line, the design team gave full play to the technical advantages, adhered to the design concept of "environmental protection route selection and geological route selection", and overcome a series of technical problems.

"in the bridge design of the project, the first high-speed railway cable-stayed bridge with a main span of 335m in China was designed to cross the Jialing River." Han Bingying said that the total length of the bridge is 601.5m, and the bridge is a high-low tower hybrid girder cable-stayed bridge with a main span of 335m; the middle span of the bridge is steel box girder, and the side span is concrete box girder, which effectively improves the overall rigidity of the structure; the bridge tower is a diamond structure, with two towers of 164.5m and 120m in height, which are staggered with the terrain and shape Fluent, beautiful lines, intended to become a beautiful scenery on the Jialing River. At the same time, the design team adopted the comprehensive support technology to overcome the tunnel problems such as small clear distance and super small distance along the line, and innovatively adopted the bridge and tunnel series connection structure in many overpass projects to eliminate the potential safety hazards during the operation period.

so far, the design team has realized the line selection design of "bridge for road, tunnel for road", reducing the impact of high-speed railway project on local ecological environment and basic farmland, and ensuring the coordination of station type, bridge and tunnel structure and scenic spot. According to

, the construction period of hanba Nanan high speed railway is expected to be 4 and a half years. After completion, it will break through the traffic bottleneck that plagues the old revolutionary base area. While accelerating the regional economic development, it will also form a "Red Tour" fast tourism route, which will play an important role in improving the overall competitiveness of regional tourism and displaying the "red gene" of the old revolutionary base area of Sichuan and Shaanxi. (end)