Construction technology of Badaling underground station of Beijing Zhangjiakou high speed railway Innovative design of Badaling great wall station of Beijing-Zhangjiakou high-speed railway Key technology of the difficult tunnels of Beijing-Zhangjiakou high-speed railway 并列题名：Key technology of the difficult tunnels of Beijing-Zhangjiakou high-speed railway Construction technology of urban underground comprehensive pipe gallery Overall design and technological innovation of Beijing-Zhangjiakou high-speed railway Intelligent design and technology of Beijing-Zhangjiakou high-speed railway 并列题名：Intelligent design and technology of Beijing-Zhangjiakou high-speed railway 并列题名：Overall design and technological innovation of Beijing-Zhangjiakou high-speed railway Green design and technology of Beijing-Zhangjiakou high-speed railway