Evaluation model for damage extent of roads in Wenchuan earthquake-stricken areas based on remote sensing information

被引：0
|
作者：
Qin J. [1 ]
Cao Y. [1 ]
Geng J. [1 ]
机构：
[1] School of Civil Engineering, Southwest Jiaotong University
来源：
Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University | 2010年 / 45卷 / 05期
关键词：
Damage of road; Evaluation model; Low-altitude remote sensing; Remote sensing information; Wenchuan earthquake;
D O I：
10.3969/j.issn.0258-2724.2010.05.019
中图分类号：
学科分类号：
摘要：
A low-altitude remote sensing data-based evaluation model for damage extent of roads was proposed for rapid assessment of transport facilities in Wenchuan earthquake-stricken areas. Spatial information about roads, bridges, tunnel portals and spatial distributional information about landslides, collapses and barrier lakes were extracted from large-scale true-color images of Wenchuan earthquake-stricken areas gained from low-altitude remote sensing platforms, and the corresponding thematic maps were drawn. Spatial coupling of a road and disaster bodies was taken as the criterion to judge whether this road is damaged. The road damage coefficient was get from the damage level of road structures due to individual disaster body, and the damage scale factor was obtained from the length of individual damaged road. Based on the above parameters, an evaluation model was established for the damage extent of roads in Wenchuan earthquake-stricken areas. The damage extent of Baisha-Xiajiaping section of Dujiangyan-Wenchuan highway was obtained using this evaluation model. The obtained result is consistent with the actual situation.
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页码：768 / 774
页数：6
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