线路工程地震触发高位崩塌滑坡灾势预测方法

发布时间：2018-04-11 06:23

本文选题：地震 + 高位滑坡　；参考：《哈尔滨工业大学学报》2017年03期

【摘要】：为了能够在高烈度山区快速判识威胁到线路工程的地震触发高位崩塌滑坡,提出一种地震触发高位崩塌滑坡灾势预测方法.预测方法在GIS技术支持下,按照水文地质条件划分边坡单元;基于边坡单元建立威胁线路的高位边坡判识模型,即高位边坡须同时满足能量和路径两种必要条件,才能保证其在失稳后会威胁到线路工程;在此基础上,结合综合指标法预测地震触发的崩塌滑坡,得到了研究区域内地震作用下威胁到线路工程的高位崩塌滑坡灾势区划图.案例分析结果表明:灾势预测方法可以对来自于路域以外复杂坡体条件下的地震触发高位崩塌滑坡体是否会威胁到线路工程进行快速判识,对高烈度山区线路选线以及既有线改建工程提供决策依据,可用于指导选线设计人员快速完成空间概略定线及多目标决策.
[Abstract]:In order to quickly identify the high level landslides triggered by earthquakes in high intensity mountain areas, a method for predicting the disaster potential of high level landslides triggered by earthquakes is proposed.The prediction method, supported by GIS technology, divides slope units into slope units according to hydrogeological conditions, and establishes a high slope identification model based on slope elements, which means that high slope must meet both energy and path requirements.On the basis of this, combined with the comprehensive index method to predict the landslides triggered by earthquakes, the map of the high level landslides that threaten the line engineering under the earthquake action in the study area is obtained, which can be guaranteed to threaten the line engineering after the instability of the landslide, and based on the prediction of the landslide caused by the earthquake, the map of the disaster potential of the high level collapse and landslide is obtained.The results of case study show that the prediction method of disaster potential can be used to quickly identify whether the high collapse landslide triggered by earthquake under complex slope conditions outside the road area will threaten the line engineering.It can provide the decision basis for high intensity mountain railway line selection and existing railway reconstruction project, and can be used to guide the line selection designers to quickly complete the spatial outline alignment and multi-objective decision.
【作者单位】：西南交通大学土木工程学院;高速铁路线路工程教育部重点实验室(西南交通大学);抗震工程技术四川省重点实验室(西南交通大学);
【基金】：国家自然科学基金面上项目(41172321);国家自然科学基金重点项目(41030742) 中国铁路总公司科技研究开发计划(20014G004-A-6)
【分类号】：P642.22

【相似文献】