高等级公路边坡工程风险因子识别及评估
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摘要
高等级公路的边坡工程由于其存在诸多的不利因素,如地质及环境水文条件、设计施工因素、工程造价与效益控制等,构成了此类工程的一些不确定性。一旦这些风险因素引发边坡灾害事故,后果严重。针对此类工程特点,提出了边坡风险因子识别方法与一般步骤,并讨论了一种利用层次分析法评估边坡工程的风险模型。结合溪洛渡水电站对外专用公路典型边坡工程,识别出该工程运营期内影响边坡稳定性的风险因子,根据技术资料和实际工况,分析了应重点控制的风险因子项,并建立相应风险评估模型。
Slopes in highway engineering in mountainous area are usually with high risks during project construc- tion and maintenance because of inherent uncertainties and disadvantages which are so called risk factors,such as ge- ological variability of environment,quality and cost control,hazards management.In this paper,the relationship be- tween slope risks and risk factors and approach to identify risk factors are discussed.A slope risk evaluation model based on AHP(Analytic Hierarch Process)is also introduced and it is applied to study slopes in the special highway transportation for Xiluodu hydro power station project and the evaluation result is certified as reasonable.
引文
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