高精度机载LiDAR在小江活动构造和地质灾害研究中的应用

刘宇平; 梁虹; 陈菲菲

高精度机载LiDAR在小江活动构造和地质灾害研究中的应用

中国地质调查局成都地质调查中心, 成都 610081

基金项目:

中国地质调查局地质调查项目“青藏高原东缘重要地区区域地质专项调查” 1212011220413

“川（滇）铁路沿线地质矿产调查” DD20160021

详细信息

作者简介:
刘宇平(1962-), 男, 硕士, 研究员, 主要从事活动构造研究。E-mail:1060923050@qq.com

中图分类号: P546;P627
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- 文章访问数: 168
- HTML全文浏览量: 109
- PDF下载量: 15
- 被引次数: 0
出版历程
- 收稿日期: 2016-04-11
- 刊出日期: 2016-09-01

APPLICATION OF HIGH RESOLUTION AIRBORNE LIDAR IN XIAOJIANG ACTIVE TECTONICS AND GEOLOGICAL DISASTER STUDY

Chengdu Center, China Geological Survey, Chengdu 610081, China

摘要

摘要: 通过机载LiDAR飞行数据处理，获得飞行区内高精度的数字高程模型（DEM）和数字地表模型（DSM）等数字地形成果，应用数字地形进行地质构造解译，确定小江活动断裂展布及构造地貌特征，圈定飞行区内金沙江、小江的滑坡及泥石流的分布范围，估算其面积及体积，为此类地质灾害的预警提供可靠信息。
- LiDAR /
- DEM /
- 小江断裂 /
- 活动断裂 /
- 泥石流
Abstract: By processing airborne LiDAR flight data of Jinsha River and Xiaojiang, we obtained high precision Digital Elevation Model (DEM) and Digital Surface Model (DSM). Using the digital terrain in geological structure interpretation, we may determine the distribution of active faults and the characteristics of tectonic geomorphology, delineating the range of the landslide and debris flow in Jinsha River and Xiaojiang, also estimating the area and volume of the landslide and debris flow. High precision airborne LiDAR data provides reliable information for such geological disaster warning.
- LiDAR /
- DEM /
- Xiaojiang fracture /
- active faults /
- debris flow

HTML全文

图 1 云南东川DSM(左)和DEM(右)数字地形图

Figure 1. DSM (left) and DEM (right) digital topographic maps in Dongchuan, Yunnan

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图 2 小江地区的DEM晕渲图(左)和坡度图(右)

Figure 2. Hill-shading map (left) and slope map (right) of DEM in Xiaojang region

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图 3 小江断裂形成的坡中槽

Figure 3. Slope groove formed by Xiaojing fault

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图 4 小江断裂切割格勒—龙树阶地的地形坡度图

Figure 4. Gele-Longshu terrace cut by Xiaojing fault (digital slope map)

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图 5 龙树阶地被小江断裂切割的地貌特征

Figure 5. The geomorphic features of Longshu terrace cut by Xiaojing fault

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图 6 小江断裂形成的地貌特征

Figure 6. The geomorphic features formed by Xiaojing fault

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图 7 东川周边小江断裂主要的错断裂水系

Figure 7. Major displaced water system formed by Xiaojing fault around Dongchuan

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图 8 小江LiDAR飞行区的水系特征(据全球STRM DEM数据)

Figure 8. The drainage characteristics of the LiDAR air field

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图 9 小江断裂在新田坝—格勒之间形成的水系位移

Figure 9. Drainage displacement formed by Xiaojing fault between Xintinba and Gele

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图 10 云南东川小江地区滑坡、泥石流和活动断裂分布

Figure 10. Landslide, debris flow and active faults distribution in Dongchuan area, Yunnan Province

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图 11 小江地区蒋家沟泥石沟分布图

Figure 11. Distribution of Jiangjiagou gully debris in Xiaojing region

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图 12 金沙江和小江交汇处主要泥石流沟及滑坡分布图

Figure 12. Distribution of main flow gully and landslide between Jinshajiang interchange Xiaojing

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