轰隆隆一声巨响,一块巨石滚落在了北京市延庆县滦平至赤城公路之上,突然而来的山体塌方,公路被阻断、桥梁被冲毁,堰塞湖随之形成。险情发生后,北京市交通委和武謦交通部队迅速成立应急救援联合指挥部,50名道路抢险队员、50名桥梁抢修队员和29台机械设备组成的北京市交通委应急抢险救援队立即赶到现场…… Rumble roar, a boulder rolled down in Yanqing County, Beijing Luanping to Chicheng highway, the sudden mountain landslides, the road was blocked, the bridge was destroyed, followed by the formation of the dammed lake. After the accident, the Beijing Municipal Commission of Communications and the Wujian traffic force quickly set up a joint emergency rescue headquarters, 50 road rescue team members, 50 bridge repair team members and 29 sets of mechanical equipment, Beijing Municipal Committee of Transportation emergency rescue team immediately rushed to on site……