因具有跨度大埋深大、洞室多密度大、古迹多环保严、人流大行车密等工程特点，八达岭长城地下车站建造面临密集洞室设计与施工组织、超大跨隧道修建、文物与环境保护、复杂地下车站运营组织等难题。为解决这些难题，所提出或形成的相关建造及运营关键技术如下： 1）基于BIM的地下车站协同设计、层叠交错小净距洞室施工安全保障技术和复杂洞室群智能施工组织，实现了密集群洞空间最优化布局和复杂结构高效施工组织； 2）通过超大跨隧道主动支护技术、“品”字形开挖技术、长寿命结构体系，实现了软弱围岩超大跨隧道安全快速施工； 3）通过地下车站出口消隐设计、微震微损伤精准爆破量化控制、施工通风与粉尘处理以及清污分离排水系统，解决了风景区隧道下穿影响难题； 4）通过深埋洞室群车站舒适环境构建、智能防灾疏散救援以及地下车站智能运营管理与智能能源管理，保障了复杂深埋地下车站旅客乘坐体验与生命安全，实现了车站高效运营和节能降耗。

Due to its particular location and huge scale, the Badaling Great Wall underground station has the following features: large span, large coverdepth, stacked/overlapped tunnels/caverns, a large number of historical sites, strict environmental protection requirements, large passenger flow, and short train headway. The construction of the Badaling Great Wall underground station faces problems in the following aspects: the design and construction organization of the stacked/overlapped tunnels/caverns, the construction of the tunnel with superlarge span, the protection of the cultural relics and environments, and the operation of the complex underground station. Key construction and operation technologies proposed or developed to address these challenges are as follows: (1) The building information modelingbased collaborative design of the underground station, the construction safety guarantee technologies for the stacked/overlapped tunnels/caverns with small clearance, and the intelligent construction organization of the stacked/overlapped tunnels/caverns, which realizes the optimum layout of the stacked/overlapped tunnels/caverns and the efficient construction organization of the complex structure. (2) With active support technology, sequential excavation technology and long service life structure system for the tunnel section with superlarge span, safe and rapid construction of the tunnel section with superlarge span in soft surrounding rock is achieved. (3) The problem of the tunnel passing underneath the scenic area is solved due to the recessive design of the exit of the underground station, the quantitative control of the microvibration microdamage precise blasting, the ventilation and dust control during the construction of the underground station and the adoption of the clean/sewage water separation and drainage system. (4) Due to the comfortable environment created, the intelligent disaster prevention, evacuation and rescue system, the intelligent operation/management system, and the intelligent energy management system adopted for the deep underground station consisting of stacked/overlapped tunnels/caverns, the riding comfort and life safety of the passengers are ensured and efficient and energysaving operation of the complex deep underground station is achieved.