成昆线危岩落石病害整治中的棚洞设计

Shelter-Tunnel Design for Dealing with Stone-falling Disasters on Chengdu-Kunming Railway

山区铁路中危岩落石病害是威胁铁路行车安全的一个主要因素。文章对不同类型病害工点及其整治措施作了介绍。由于每种棚洞结构其自身的特点对地形、地质和环境条件有严格的要求,因而设计中应因地制宜地选择适合实际地形、工程地质条件的棚洞结构,其中棚洞基础的设置是整个结构设计的关键之所在。成昆线病害整治所涉及的棚洞类型有7种之多,均为铁路的安全运营发挥了应有的作用。

Stone-falling disasters constitute a major threat to the safe operation of mountainous area railways. this paper some typical sheher-tunnels are recommended according to different topographical and geological conditions, such as combined shelter-tunnel,three-line sheher-tunnel,double-line shelter-tunnel and cantilever shelter-tunnel, etc. There were seven types of shelter-tunnels on Chengdu-Kunming railway adopted for dealing with stone-falling disasters which played due role for the safe operation of the railway.