SBAS-InSAR技术在矿区地面沉降监测中的应用研究

Study on Ground Monitoring Subsidence in Mining Area Based on SBAS-InSAR Technique

差分干涉测量短基线集时序分析技术(SmallBaselineSubsetInSAR,SBAS-InSAR)凭借其独特的优势,在大区域、长时间序列的地面沉降监测领域具有巨大的应用前景。利用SBAS-InSAR技术对覆盖济宁矿区的21景ENVISAT ASAR影像进行处理,获取了研究区在2004~2010年的基本沉降信息,发现研究区存在兖州城区东部与曲阜交界(泗河)区域和济宁任城区北部区域两个沉降区,最大年平均沉降速率出现在兖州的兴隆庄煤矿一带,达到41 mm/a;将结果与水准监测数据进行对比,发现在矿区整体沉降分布以及沉降趋势上,SBAS-InSAR监测结果与实际情况是相符的。

Using small baseline SBAS InSAR technology with its unique advantages to monitor the large area and long time series for the ground subsidence has great application prospect.The small baseline subset InSAR technique based on 21 ENVISAT ASAR images covered the Jining mining area is used to monitor the ground subsidence in the study area from 2004 to 2010.The results showed that there are two subsidence areas in the study area:the east of Yanzhou city and the Qufu border area(Sihe)and the north of Rencheng District,the maximum average annual settlement rate reach to 41 mm/a appear in the Xinglongzhuang coal of Yanzhou.In comparison with the level monitoring data,the SBAS-In SAR monitoring results are consistent with the actual situation in terms of the overall subsidence distribution and subsidence trend of the mining area.