东北大学学报:自然科学版 ›› 2020, Vol. 41 ›› Issue (10): 1445-1451.DOI: 10.12068/j.issn.1005-3026.2020.10.013

• 资源与土木工程 • 上一篇    下一篇

基于多轨道SBAS方法的露天矿高陡边坡形变监测

魏恋欢, 封秋月, 毛亚纯, 刘善军   

  1. (东北大学 资源与土木工程学院, 辽宁 沈阳110819)
  • 收稿日期:2019-10-09 修回日期:2019-10-09 出版日期:2020-10-15 发布日期:2020-10-20
  • 通讯作者: 魏恋欢
  • 作者简介:魏恋欢(1986-),女,辽宁沈阳人,东北大学讲师,博士; 刘善军(1965-),男,河北涿鹿人,东北大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(41601378); 中央高校基本科研业务费专项资金资助项目(N2001027); 中欧合作龙计划四期项目(No.32365_4); 国家重点研发计划项目(2016YFC0801602).

Deformation Monitoring of High Steep Slope in Open-Pit Mine with Multi-Orbit SBAS

WEI Lian-huan, FENG Qiu-yue, MAO Ya-chun, LIU Shan-jun   

  1. School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China.
  • Received:2019-10-09 Revised:2019-10-09 Online:2020-10-15 Published:2020-10-20
  • Contact: FENG Qiu-yue
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摘要: 面向深凹露天矿形变监测,利用三组Sentinel-1数据对鞍钢集团大孤山铁矿进行小基线子集分析,研究了一种基于地形特征的坡向位移求解方法,将三组卫星视线(line of sight,LOS)方向形变转换为坡向位移.三组监测结果均与实测数据存在较高一致性,且与矿区降水量变化存在相关性.大孤山铁矿矿坑的形变区域主要集中在西北帮.研究表明:岩体结构、岩性与降水是影响露天矿坑边坡稳定性的主要因素.多轨道小基线子集法可作为常规监测手段来监测深凹露天矿潜在的形变,为防灾减灾、安全生产提供技术支持与依据.

关键词: 露天矿, 高陡边坡, 形变监测, 小基线子集法, 时序InSAR

Abstract: For deep open pit deformation monitoring, three Sentinel-1 datasets were analyzed by the small baseline subset method for deformation monitoring of the high steep slope in Dagushan Open-pit Iron Mine. A slope deformation retrieval method based on topographic features was studied. Three groups of LOS deformation were transformed to slope deformation respectively. Three groups of monitoring results are in good agreement with terrestrial measurements, and there is a certain correlation with precipitation. Northwest slope of the open-pit is the main deformation area threatening mine safety. The results showed that rock mass structure, lithology and precipitation are main factors affecting the stability of deep open-pit mines. Multi-orbit SBAS can be used as a routine tool for deformation monitoring of high steep slopes in deep open-pit mines, providing technical support for disaster prevention and mitigation.

Key words: open-pit mine, high steep slope, deformation monitoring, small baseline subset method, time series InSAR

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