基于InSAR的郑州市地面沉降监测应用研究

发布时间：2018-06-13 23:52

本文选题：InSAR + 小基线集　；参考：《中国地质大学(北京)》2017年硕士论文

【摘要】：地面沉降是普遍存在的地质现象。它会不断地对房屋建筑、道路交通、地下管道枢纽等造成严重甚至不可逆的破坏,使我国许多城市饱受其害。郑州市地处我国中原地区,周边有多个地质变动带,易发生地面沉降。因此,对郑州市进行地面沉降观测具有十分重要的意义。这不仅对郑州市的城市规划具有指导意义,还可以为郑州地面沉降灾害进行实施评估和预防。在地面沉降监测的技术中,InSAR很好的替代了原有的水准、GPS测量技术手段,很好的解决了原有方法采样点少、监测时间长的缺点,并且具有监测范围大、处理方法简单高效、精度高的优点。目前,使用InSAR技术监测城市地面沉降已经成为沉降监测的主要方法之一。本文对InSAR原理进行了详细的介绍,且着重介绍了基于永久散射体的InSAR技术,并对其在郑州市地面沉降监测进行了十分深入的讨论,且创新性的进行了与水准、GPS测量结果的精度分析,主要内容有以下几方面:(1)开展基于InSAR的地面沉降监测方法研究,对InSAR地面沉降监测方法进行对比分析。(2)对获取的TerraSAR-X数据进行干涉处理,提取郑州市区一年期间地面沉降的发展变化信息。(3)利用GPS、水准测量结果对InSAR监测结果进行精度验证,评价InSAR技术进行地面沉降监测的准确性。
[Abstract]:Land subsidence is a common geological phenomenon. It will cause serious and even irreversible damage to buildings, road traffic, underground pipeline hubs and so on, which has caused many cities in our country to suffer from the damage. Zhengzhou is located in the Central Plains of China. There are many geological zones around Zhengzhou, which are prone to land subsidence. Therefore, it is of great significance to observe the ground subsidence in Zhengzhou. This not only has guiding significance for Zhengzhou city planning, but also can evaluate and prevent the ground subsidence disaster in Zhengzhou. In the technology of land subsidence monitoring, InSAR is a good substitute for the original GPS measurement method, which solves the shortcomings of the original method, such as less sampling points and longer monitoring time, and has a large monitoring range and a simple and efficient processing method. The advantage of high precision. At present, using InSAR technology to monitor urban land subsidence has become one of the main methods of settlement monitoring. In this paper, the principle of InSAR is introduced in detail, and the InSAR technology based on permanent scatterer is emphatically introduced. And the precision analysis of GPS survey results with leveling is carried out innovatively. The main contents are as follows: (1) the research of land subsidence monitoring method based on InSAR is carried out. The method of InSAR ground subsidence monitoring is compared and analyzed. (2) the TerraSAR-X data are processed by interferometry, and the development information of land subsidence in Zhengzhou urban area is extracted during one year.) the precision of InSAR monitoring results is verified by using GPS and leveling results. The accuracy of land subsidence monitoring by InSAR technology is evaluated.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P642.26

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