Abstract: Focusing on the calamities of the national and provincial arterial roads in Chongqing municipality，specifically on the aspects as the characteristics，the typology，the spatial distribution，the formation mechanism and the counterm easures，the conclusion that the arterial roads here are of high frequency of calamities and obvious spacial distribation charcter is summerized．And after analyzing the causes of the calamities here，the counterm easures are set forth including paying attention to the geology exploration，rationally programming，controlling the builders activity and constraction qulity，strengthening the calamity distribution and time forecasting ability．

Key words: Chongqing, arterial road calamities, causes, counterm easures

摘要： 基于对重庆市国省干线公路灾害特性、类型、空间分布、原因机理进行研究，得出重庆市国省干线公路灾害发 育，并且具有十分明显的分区发育特征的结论，分析了灾害发生的诱因，提出了充分重视地质勘查工作，合理规划和 控制人类工程活动，严格控制工程质量，强化灾害分布预测，改进灾害时间预报的防治措施．

关键词: 重庆市, 公路灾害, 成因, 防治