干线公路灾害防治试点工程灾害特征及治理——以国道316线陕西境安康至汉中段为例

Characteristic and control of trunk highway hazards A case study on the highway between Ankang and Hanzhong in Shaanxi Province along G316

针对国道316线陕西段公路灾害特征,通过调查发现:公路灾害主要有地质灾害和水毁灾害,包括滑坡、滑塌、崩塌、泥石流、路基沉陷和路基水毁,其中滑坡灾害对公路造成的破坏最大,路基沉陷次之,滑塌灾害数量最多;从环境因素(外部条件)和公路工程自身两方面分析了公路灾害的成因及主要影响因素;根据公路灾害的类型、特点、规模及其对道路安全和通行的影响程度,在综合考虑危害程度、治理技术、资金等因素的基础上,提出了根本治理、预防治理和维持治理三种灾害治理方案。

Survey on G316 in Shaanxi Province shows that the main hazards of highway are caused by geologic hazard and flood,including landslide,slump,collapse,debris flow and depressions.Landslide causes the greatest damage to highway,depressions take the second place and slump occurs the most.Causes of formation and main factors of the highway hazards were analyzed from both environmental aspects（external conditions） and highway itself.According to the type,characteristic,scope of the highway hazards and their effect on road safety and traffic,prevention and maintenance treatments can be used as the main means for hazard control,based on levels of hazard,treatment technologies and funds.