基于 PS-InSAR 技术的南水北调中线某膨胀土渠段地表形变规律研究

金属矿山 ›› 2025, Vol. 55 ›› Issue (8): 236-243.

基于 PS-InSAR 技术的南水北调中线某膨胀土渠段地表形变规律研究

冯　党^1,2 　刘先林¹ 　康静伟² 　刘文锴¹　胡青峰¹ 　邹根中³ 　王　鹏³

1. 华北水利水电大学测绘与地理信息学院,河南郑州 450046;2. 中国南水北调集团中线有限公司渠首分公司, 河南南阳 473000;3. 河南贾鲁河环境综合治理有限公司,河南郑州 450002

出版日期:2025-09-15 发布日期:2025-09-16
通讯作者: 刘先林(1939—),男,中国工程院院士,博士研究生导师。
作者简介:冯　党(1985—),男,高级工程师。
基金资助:
国家自然科学基金区域创新发展联合基金重点支持项目( 编号:U21A20109);国家自然科学基金面上项目( 编号: 42277478, 52274169)。

Study on Surface Deformation Law of an Expansive Soil Channel Section in the Middle Route of South-to-North Water Transfer Project Based on PS-InSAR Technology

FENG Dang ^1,2 　 LIU Xianlin ¹ 　 KANG Jingwei ² 　 LIU Wenkai ¹ 　 HU Qingfeng ¹ 　 ZOU Genzhong ³ 　 WANG Peng ³

1. College of Surveying and Geo-informatics,North China University of Water Resources and Electric Power,Zhengzhou 450046,China; 2. Qushou Branch of China South-to-North Water Diversion Middle Route Corporation Limited,Nanyang 473000,China; 3. Henan Jialu River Environmental Comprehensive Treatment Co. ,Ltd. ,Zhengzhou 450002,Chian

Online:2025-09-15 Published:2025-09-16

摘要/Abstract

摘要： 为揭示南水北调中线某膨胀土渠段地表形变规律,基于 PS-InSAR 技术,利用 2020 年 6 月—2021 年 2 月期间覆盖研究区的 22 景升降轨 TerraSAR-X 影像数据,采用多轨道时序 InSAR 方法开展地表变形规律研究。该方法不仅能够对研究区进行面域全方位监测,而且能够揭示监测区域形变的时序特征,有效弥补了传统水准或 GNSS 监测方法仅能够实现单点监测的不足。获得了 2020 年 6 月—2021 年 2 月研究区渠段的二维地表形变演化特征,并对地表形变时空分布特征进行了分析和提取。结果表明:在监测时间段内研究区渠段年平均沉降形变速率为- 25 ~ 20 mm/ a;其中深挖方渠段呈现抬升趋势,年平均形变速率达 20 mm/ a,高填方渠段呈现沉降趋势,年平均形变速率达-25 mm/ a。结合研究区工程地质条件分析,可知研究区深挖方渠段呈现抬升的主要原因是膨胀土遇水膨胀;高填方渠段呈现沉降的主要原因是该渠段范围内边坡较陡峭,在膨胀土遇水膨胀和边坡滑移共同作用下,渠道边坡向下滑移起到了主要作用,从而呈现不同的形变趋势。

关键词: 南水北调中线　 PS-InSAR　 TerraSAR-X　二维形变　膨胀土

Abstract: To reveal the surface deformation law of a certain expansive soil canal section in the middle route of the Southto-North Water Diversion Project,based on the PS-InSAR technology,22 scenes of ascending and descending TerraSAR-X images covering the study area from June 2020 to February 2021 were used,and the multi-track time-series InSAR method was adopted to study the surface deformation law of a certain expansive soil canal section in the middle route of the South-to-North Water Diversion Project. This method not only can conduct all-round monitoring of the study area in a planar area,but also can reveal the temporal characteristics of deformation in the monitoring area,effectively making up for the deficiency of traditional leveling or GNSS monitoring methods that can only achieve single-point monitoring. The two-dimensional surface deformation evolution characteristics of the canal section in the study area from June 2020 to February 2021 were obtained,and the temporal and spatial distribution characteristics of surface deformation were analyzed and extracted. The results show that the average annual subsidence deformation rate of the canal section in the study area during the monitoring period is -25 to 20 mm/ a;among them,the deep-cut canal section shows a lifting trend,with an average annual deformation rate of 20 mm/ a,and the high-fill canal section shows a subsidence trend,with an average annual deformation rate of -25 mm/ a. Combined with the engineering geological conditions of the study area,it can be known that the main reason for the lifting of the deep-cut canal section in the study area is the expansion of expansive soil when it meets water;the main reason for the subsidence of the high-fill canal section is that the slope in this canal section is relatively steep. Under the combined action of the expansion of expansive soil when it meets water and the slope sliding,the sliding of the canal slope downward plays a major role,thus presenting different deformation trends.

Key words: south-north water transfer project,PS-InSAR,TerraSAR-X,two-dimensional deformation,expansive soil

中图分类号:

TD325
P237

冯　党, 　刘先林　康静伟　刘文锴　胡青峰　邹根中　王　鹏. 基于 PS-InSAR 技术的南水北调中线某膨胀土渠段地表形变规律研究 [J]. 金属矿山, 2025, 55(8): 236-243.

FENG Dang , 　 LIU Xianlin 　 KANG Jingwei 　 LIU Wenkai 　 HU Qingfeng 　 ZOU Genzhong 　 WANG Peng . Study on Surface Deformation Law of an Expansive Soil Channel Section in the Middle Route of South-to-North Water Transfer Project Based on PS-InSAR Technology[J]. Metal Mine, 2025, 55(8): 236-243.

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