On December 21, 2022, the Bama-Tiandong Expressway in Guangxi was completed and opened to traffic. The hometown of longevity in the world - Bama Yao Autonomous County of Hechi City, the driving time from Baise to Nanning was shortened by about 1 hour compared with the previous one, which greatly improved the road along the road. Traffic Conditions.

Batian Expressway

According to reports, Batian Expressway is an important part of the 11th Bama-Pingxiang (Youyiguan) Expressway planned in the "Guangxi Expressway Network Planning (2018-2030)". The starting point of the project is located on the south side of Bama County, connecting with the Du'an-Bama Expressway, passing through Natao Township and Yandong Town of Bama County, Yixu Town and Shuoliang Town of Tiandong County, and the end point is located at Linfeng Town Public Park, Tiandong County. On the south side of Jingcun, it is directly connected to Tiandong Jingtian and so on to Daxin Expressway. The main line of the project is 66.6 kilometers long, with a total investment of 10.38 billion yuan.

The project adopts the standard construction of two-way four-lane expressway, with a design speed of 100 km/h, a total of 67 main line bridges, 8 tunnels, 2 hub-type interchanges, 3 general-type interchanges, and 3 connecting lines, with a total length of 11.7 kilometers ; Set up 2 service areas in Yixu and Linfeng, and 3 toll stations in Yixu, Shuoliang and Linfeng.

As an important part of the Bama-Pingxiang Highway, the Batian Expressway closely connects the three old revolutionary areas of Hechi, Baise, and Chongzuo. The transportation conditions of the county can realize the rapid access between Changshou Township and the red base, promote the integrated development of transportation + tourism, and effectively promote the economic and social development along the route. It is necessary for Guangxi to integrate into the construction of the Belt and Road, accelerate the construction of new land-sea corridors in the west, coordinate the construction of a modern comprehensive transportation system and improve Emergency support capabilities are of great significance.

Baizhang Tunnel of Bama-Tiandong Expressway

Batian Expressway is located in a mountainous sandstone road section with a bridge-tunnel ratio of 44.5%. There is a shortage of ground materials along the line. The excavation and abandonment of the roadbed and tunnels are large. There are many expansive soils and goaf sections along the line. It is difficult to allocate earth and stone and resettle the spoil.

Since the start of the project construction, the project headquarters has used the smart beam field for girder prefabrication on a large scale. It took 8 months to complete the prefabrication of 7,500 pieces of beams along the entire line. The intelligent and mechanized advanced experience of the smart beam field has become the promotion of Guangxi expressway industry. model. In order to precisely control the content of gravel particles and improve the adhesion between gravel and asphalt, the project headquarters independently developed a 350-400 tons/hour automatic water washing production line for asphalt pavement gravel, which ensures the structural depth and average level of the pavement quality degree, water permeability coefficient and porosity, and improve the engineering quality of the pavement. Editor/He Yuting