CAJ | 학술논문

目前我国很多城市正在遭受地面沉降的地质灾害，长三角地区尤为严重，其持续时间长，规模大，带来的经济损失巨大，无锡是长三角地区大规模地面沉降的典型代表城市之一。为此，本文利用10景ALOS PALSAR影像，基于短基线子集(SBAS)干涉技术，评估了无锡市从2007年1月12日到2011年3月10日的地表时序形变。研究结果表明：惠山区沉降速率较快；2007年到2009年沉降空间格局发生了改变，2009年到2010年监测结果出现异常陡降。实验证明利用短基线子集(SBAS)干涉技术对大范围的长时间序列沉降监测可行且有效，其监测结果可以让决策者全面掌握地面沉降灾害的整体状况，从而为地理国情监测以及防灾减灾提供重要的科学依据，同时也可以根据沉降规律追溯历史工程活动时间。
목전아국흔다성시정재조수지면침강적지질재해，장삼각지구우위엄중，기지속시간장，규모대，대래적경제손실거대，무석시장삼각지구대규모지면침강적전형대표성시지일。위차，본문이용10경ALOS PALSAR영상，기우단기선자집(SBAS)간섭기술，평고료무석시종2007년1월12일도2011년3월10일적지표시서형변。연구결과표명：혜산구침강속솔교쾌；2007년도2009년침강공간격국발생료개변，2009년도2010년감측결과출현이상두강。실험증명이용단기선자집(SBAS)간섭기술대대범위적장시간서렬침강감측가행차유효，기감측결과가이양결책자전면장악지면침강재해적정체상황，종이위지리국정감측이급방재감재제공중요적과학의거，동시야가이근거침강규률추소역사공정활동시간。
At present, the geological disasters of ground subsidence occur in many cities of China, which are particularly severe in the Yangtze River Delta region where subsidence has long duration, large-scale causing huge economic losses. Wuxi is one of the typical cities of the large-scale land subsidence in Yangtze River Delta. In this article, we use ten ALOS PALSAR images, the time series of land subsidence of Wuxi city from January 12, 2007 to March 10, 2011 is estimated using the small baseline subsets D-InSAR technology. The results show that obvious subsidence occurred in the Hui Shan area, and the settlement in other areas is relatively stable with the average settlement about 15 mm; The settlement spatial pattern changed during 2007-2009, but the settlement rate increased from 2009 to 2010. Experiments prove that the short baseline subset (SBAS) interference in long time series of large-scale subsidence monitoring is feasible and effective. The results of monitoring ground subsidence provide an important scientific basis for disaster prevention and mitigation, and enable policy makers to make the right decisions. In the meantime, we can also trace the history of engineering activities according to the subsidence.