基于SBAS-InSAR技术的矿区地表移动规律研究

Surface movement law of mining area based on SBAS-InSAR technology

及时获取矿区地表沉降信息对保护地表建筑物安全和矿区治理具有重要意义。传统的矿区地表沉降监测方法通常需要花费大量人力物力,且监测点难以长期保存,而作为新技术的SBAS-InSAR方法克服了上述传统方法的不足,可以快速获取大范围、高精度的地表形变信息,能够对矿区地表进行动态监测和时序分析。本文采用SBAS-InSAR技术对覆盖河北某矿的Sentinel_1A影像进行处理,得到了该矿区地表及周围的年平均沉降速率和累计沉降等成果,并通过和实测水准数据对比验证了SBAS-InSAR精度在矿区地表监测中的可靠性。然后基于SBAS-InSAR监测结果获取的矿区地面沉降位置、沉降量和工作面等信息,求取该矿地表移动参数,并依据地表沉降速率和沉降位置分布及发展变化进行地表移动规律探究,为矿区后续的合理开采和治理提供决策依据。

Monitoring the surface of the mining area and obtaining the surface settlement information of the mining area are of great significance for protecting the safety of surface buildings and the management of mining areas.The traditional surface monitoring methods in mining areas include leveling and traverse measurement.These methods require a lot of manpower and material resources,and the monitoring points are difficult to store for a long time.The SBAS-InSAR method as a new technology overcomes the shortcomings of the above traditional methods and can quickly acquire large range and high-precision surface deformation information enables dynamic monitoring and timing analysis of the surface of the mining area.In this paper,SBAS-InSAR technology is used to process Sentinel_1A image coverage of research mine.The annual average settlement rate and cumulative settlement of the mine surface and surrounding area are obtained,and the reliability of the SBAS-InSAR precision in the surface monitoring of the mine area is verified by comparison with the measured data.Then based on the information of SBAS-InSAR monitoring results,the ground subsidence position,settlement and working surface of the mining area are used to obtain the surface movement parameters of the research mine,and the surface movement law is explored according to the settlement rate and settlement position distribution and development of the mine.And provides decision-making basis for the rational mining and treatment of the mining area.