Tunnel project the Ministry of Railways - China

It is the main tunnel and underground engineering, Design, research, construction of a three-dimensional large-scale railway construction mechanization level qualifications enterprises, the investigation and Design Institute of the general contractor for the Class A units eligible. Its long history, more than 40 , to participate in the Chengdu-Kunming railway construction, such as 16, and built 350 railway tunnel project are to meet the Design standards of quality in recent years tunnel and underground works with the new Austrian law principle combination of geological conditions, a rock-breaking, shipment , and supporting, grouting, Measurement, feedback, and so complete a series of production lines, and project quality and construction technology to the current domestic industry with  

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the advanced level Dayaoshan up the construction of a new railway tunnel technology won the National Scientific and Technological Progress top award.