M5'模型树算法和无人机航拍影像在震后崩塌滑坡分析中的应用——以鲁甸MS6.5地震为例
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

P315

基金项目:

中国地震局地球物理研究所中央级公益性科研院所基本科研业务专项(DQJB14B10、DQJB15C04)和国家自然科学基金项目(41404048)联合资助


The distribution of landslides based on the M5' model tree method -Taking the Ludian MS6.5 earthquake as an example
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    利用高分辨率无人机航拍影像,结合基本地质资料,分析了影响2014年 8月3日鲁甸MS6.5地震震后崩塌滑坡分布的主要因素,使用M5'模型树算法建立了崩塌滑坡密度与其影响因子间的分段线性模型,并检验了该模型的预测性能。结果表明,地震诱发的崩塌滑坡分布受断层距、岩土体结构强度、坡度、植被条件等的影响,其中,断层距、岩土体结构强度及坡度等为主要影响因素;崩塌滑坡易发生在结构破裂区及坡度为38°~50°的区域,其分布密度随断层距的增加而减小;利用M5'模型树算法建立的模型体现出崩塌滑坡分布与其影响因子间复杂的非线性关系,模型检验结果显示,理论模型与实际关联函数间的相关系数达到0.88,因此,可利用该模型预测地震诱发的崩塌滑坡的分布。

    Abstract:

    An earthquake with MS6.5 occurred on August 3,2014,in Ludian,Yunnan Province,China. The Ludian earthquake resulted in enormous casualties,and also caused a large number of landslides. We use the high-resolution aerial images with basic geological data of aerial area in the analysis of the distribution of landslides induced by the earthquake with the main affecting factors of structural strength of rocks,slopes,vegetation conditions and distance to the fault. A piecewise linear model was established by the M5' model Tree method which has four explicit piecewise linear indexes including the density of landslides,distance from the fault,structural strength of rocks,slopes and vegetation conditions. The results show that the landslides are mainly affected by distance to the fault,slopes and structural strength of rocks. The density of landslides is attenuated with the increase of distance to the fault. Earthquake-induced landslides form easily in the structural fracture zone and slope with 38°-50°. The established model approaches the nonlinear relations earthquake-induced landslide distribution with those factors. The correlation coefficient between the model and the actual distribution of landslides density is 0.88. It denotes that landslides density is determined by the factor referring to the index. Therefore,model might be used to predict the distribution of earthquake-induced landslides.

    参考文献
    相似文献
    引证文献
引用本文

王伟平,杨建思,高瑜,徐志强,姜旭东,郑钰,彭朝勇. M5'模型树算法和无人机航拍影像在震后崩塌滑坡分析中的应用——以鲁甸MS6.5地震为例[J].中国地震,2017,33(1):68-80

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2015-11-02
  • 最后修改日期:2016-02-03
  • 录用日期:
  • 在线发布日期: 2017-07-19
  • 出版日期:
您是第位访问者
中国地震 ® 2024 版权所有
技术支持:北京勤云科技发展有限公司