1. Project Overview
Located in Shannan New Area, Huainan City, Anhui, Dongshan Tunnel, the longest urban tunnel with complete functions in Anhui Province, runs through Shungeng Mountain, with the left line being 913.0m long and the right being 910.0m long, net in-tunnel width being 14.5m in a single hole; it, consisting of motorway, bicycle lane, sidewalk and maintenance roadway, is equipped with complete systems for ventilation, lighting, firefighting, power supply and distribution, monitoring and central control management.
2. Technical Features and Innovations
1) Zero excavation method adopted to reduce the destruction to the surrounding environment.
2) The main structure designed according to the new Austrian method, composite lining with flexible supporting structure adopted, and many types of support structures used according to geological conditions in tunnel.
3) The construction scheme adopting various excavation methods, including ring cut method with reservation for core soil, multi-step method, CD method, and CRD method, and laser tunnel displacement real-time monitoring system adopted to realize all-weather, digitalized display and improve construction safety.
3) A variety of waterproof and drainage measures adopted to ensure the engineering requirements are met
4) Asphalt compound pavement adopted in opening sections to improve the driving comfort and reduce noise.
5) Dedicated tunnel plate scheme adopted for interior decoration, and unique, meteor-like tunnel landscape created with cleverly arrangement of lamps and the sky blue coating.
3. Innovative Achievements
1) Winner of the First prize of Anhui Outstanding Works Survey and Design, and 2010 Gold Cup Demonstration Project Award for China Municipal Works.
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