高寒地区露采高边坡合成孔径雷达在线监测预警研究

Research on online monitoring and early warning by synthetic aperture radar for open-pit high slope in alpine area

露天矿山边坡稳定性是安全可持续开采的关键,且边坡稳定状态随着采动影响不断发生变化,采用先进实用的监测技术对大范围露天边坡稳定性进行不间断监测和实时预警对于保障矿山安全生产意义重大。本文在高寒地区的露采高边坡构建合成孔径雷达监测系统,并对露采高边坡表面位移在线监测预警研究。监测数据表明,合成孔径雷达监测预警技术相对于传统的GNSS等点监测技术具有明显的技术优势,较少受到高寒地区恶劣气候和天气条件的影响,能够实现对边坡表面位移形变的高精度面监测,并且可对边坡形变进程进行不间断持续跟踪,能够准确识别出边坡滑移的重点区域,及时发出预警信息,为高寒地区露采高边坡的安全管理提供准确的数据依据和有益的技术参考。

The stability of open-pit mine slope is a critical factor to the safe and sustainable mining and it changed continuously due to the mining activities,so it is of great significance for the mining production safety to use the advanced practical monitoring technologies so that the large scale open-pit mine slope can be real-time monitored and early warned continuously.The monitoring and prewarning system is established in an open-pit mine in north China based on the synthetic aperture radar and the surface displacement of slope is investigated in this paper.The monitoring and early warning data show that compared to some traditional point monitoring technologies like GNSS,the synthetic aperture radar system had obvious technical advantages.It could provide high accuracy monitoring to the whole open-pit mine slope simultaneously and it could also make uninterrupted,continuous tracking and early warning in real-time on the slope deformation process.The synthetic aperture radar system could identify accurately the critical deformation area,which provided accurate data basis and useful technical reference for cold area open-pit mining slope safety management.