摘要
本文收集了7景江西省丰城市某煤矿的日本L波段PALSAR卫星雷达数据,采用雷达干涉测量技术中的小基线集(SBAS)方法监测该煤矿的地表沉降。处理过程中选择空间基线小于700m的短基线干涉像对生成矿区差分干涉图,高相干点目标的选择以平均相干系数大于且等于0.3的像元为对象,通过高相干点采用奇异值分解法对相位形变序列解算,得到该煤矿不同时间段的沉降量,从而反映该矿区的地表沉降演变情况。通过实验结果得出:SBAS技术克服了传统D-InSAR技术失相干的问题,能够获取矿区地表在时间维上的连续形变场,显示矿区开采沉陷不同时间段的地表沉降特征,提高监测结果的精度和可靠性。
This paper has collected 7 scenes of L band PALSAR data of a mine in Jiangxi province, using the small baseline set （SBAS） method for surface mining subsidence inversion. Selecting short baselines less than 700m for the interferometry, and coherent point targets with an average coherence greater than or equal to 0. 3, based on the singular value decomposition （SVD） for deformation phase sequence solution, the cumulative settlement of the study area in different time periods, reflecting surface subsidence evolution of the study area, is obtained. The results show that SBAS technology overcomes the decorrelation problems in the traditional D-InSAR method and can obtain continuous surface subsidence at mining area with improved accuracy and reliability.
作者
朱煜峰
邓宇声
臧德彦
王伟忠
Zhu Yufeng Deng Yusheng Zang Deyan Wang Weizhong(Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, East China Institute of Technology, Nanchang 330013, China Xinjiang Geological and Mining Departments First Hydrological Engineering Geological Team, Wulumuqi 830091, China)
出处
《工程勘察》
2017年第4期35-38,59,共5页
Geotechnical Investigation & Surveying
基金
国家自然科学基金资助项目(41464001)
江西省自然科学基金资助项目(2012ZBAB216001
20151BAB203042)
江西省教育厅科技研究资助项目(GJJ14489)
东华理工大学放射性地质与勘探技术国防重点学科实验室资助项目(RGET1317)
