Journal of Northeastern University Natural Science ›› 2020, Vol. 41 ›› Issue (10): 1445-1451.DOI: 10.12068/j.issn.1005-3026.2020.10.013

• Resources & Civil Engineering • Previous Articles     Next Articles

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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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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