At 2:30 p.m. on December 27, with the sound of a gun, the changshan tunnel, a highway engineering project from gutian to wenyang section, G235, of China railway no.2 engineering group no.3 company, was successfully completed.

The changshan tunnel is a left and right separated tunnel, with a total length of 1852.5 meters. The tunnel area is a high and low mountain landform with large topographic fluctuation. It passes through the seismic fracture zone many times and has complicated geology. Under the company's great attention and guidance, all the staff of the project department worked hard to ensure the safety, efficiency and orderly progress of the project construction. In the course of tunnel construction, the project department adopted advanced construction technology, effectively controlled the safe step distance, made safe, orderly and steady tunneling, and completed the secondary lining construction with quality and quantity guaranteed. It took 254 days to realize the smooth completion of changshan tunnel.

Gutian G235 project belongs to fujian provincial highway “ Eight longitudinal eleven horizontal fifteen couplets ” The section is an important part of the five vertical lines in the north and south of the ancient field, and is also an important part of the regular provincial trunk highway planning route in ningde city. The road construction will improve the regional road network structure, to speed up urbanization process along, give full play to the provincial trunk highway driving, support the industry development of county economy, expanding port land and gather the resources, promote the direct link ningde and nanping, and promote the economic development of the southeast coast, hercynian economic zone & other service; Big port, big channel, big logistics ” In the construction.