基于RS与GPS的汶川地震路基路面震害损毁调查——以都汶公路为例

Earthquake Damage Survey of Subgrade and Pavement Based on Remote Sensing and GPS——A Case Study of Duwen Highway

摘要:

文章以都汶公路为例，利用遥感解译技术快速获取地震诱发山地灾害类型及其对公路造成的严重损害类型，利用GPS对公路损毁灾害点准确定位，获得路基路面直接震害类型信息，同时对山地灾害遥感判识结果进行检验。通过分析认为公路沿线岩体岩性以及风化破碎程度的不同，对公路产生的损毁程度不相同；路基破坏程度与距离震中和断裂带的远近有密切关系；路基下方护坡的破坏与所处边坡的坡度有关；崩塌滑坡产生大量松散固体物质，雨季到来之后，极易暴发大规模泥石流，需要注意并防范泥石流对行车安全和道路交通的影响。

Abstract:

In thsi paper, setting Duwen high road as an example, using interpretation of remote sensing technology, types of mountain hazards and serious damage on the highway caused by earthquake have been gained. By using GPS, damages on the road are accurately located, information of earthquake damage to pavement have been gained, and result judgement to mountain hazards by using remote sensing technology been tested. It is regarde that different rock lithology and the different levels of weathering will casue different damages on the road; damage levels of pavement have close relation with the distance from the epicenter and fault zones; damage levels of embankment have close relation with the slope angle; landslides generated a lot of loose solid substances, after the rainy season, large scale of mudslides will happen easily. Thus, it is necessary to pay attention and to prevent the effect of mudslides to the road safety and transport.