Monitoring and risk assessment of land subsidence along Nanjing subway

doi:10.13474/j.cnki.11-2246.2019.0332

Abstract

Abstract: The land subsidence of Nanjing main urban area is obtained based on MCTSB-InSAR (multiple master-image coherent target small-baseline interferometric SAR), and the spatial distribution characteristics of land subsidence in the study area are analyzed. By the process of strip spatial buffer analysis and profile line, the uneven subsidence information of the land and surrounding buildings along metro lines are derived. Then, the geological disaster risk assessment is applied on the main impacted road sections. The results of evaluation and time series subsidence of feature point are basically consistent with the actual situation at the same time. The result shows that which is important to long-term monitor the land subsidence of main urban areas and metro lines. It can provide reliable support for disaster prevention and impact evaluation with geological disaster risk assessment and has great application potential.

Key words: land subsidence, MCTSB-InSAR, subway, time series, risk assessment

CLC Number:

P258

FAN Xueting, LI Mingju, PAN Jiubao, WANG Shengyao. Monitoring and risk assessment of land subsidence along Nanjing subway[J]. 测绘通报, 2019, 0(10): 123-126,141.

References 15

[1]	杨子奇,葛克水,李皓,等.北京地铁九龙山-大郊亭区间隧道开挖引起的地表沉降研究[J].西部探矿工程, 2016(6):201-206.
[2]	宫辉力,张有全,李小娟.基于永久散射体雷达干涉测量技术的北京市地区地面沉降研究[J].自然科学进展, 2009,19(11):1261-1266.
[3]	GE D Q,WANG Y,ZHANG L,et al. Integrating medium and high resolution PSInSAR data to monitor terrain motion along large scale manmade linear features: a case study in Shanghai[C]//Proceedings of the Geosciences and Remote Sensing Symposium. Melbcume: IEEE,2013:4034-4037.
[4]	祝秀星,陈蜜,宫辉力,等.采用时序InSAR技术监测北京地铁网络沿线地面沉降[J].地球信息科学学报,2018,20(12):1810-1819.
[5]	刘凯斯,宫辉力,陈蓓蓓.基于InSAR数据的北京地铁6号线地面沉降监测分析[J].地球信息科学学报,2018,20(1):128-137.
[6]	张永红,吴宏安,康永辉.京津冀地区1992—2014年三阶段地面沉降InSAR监测[J].测绘学报,2016,45(9):1050-1058.
[7]	秦晓琼,杨梦诗,王寒梅,等.高分辨率PS-InSAR在轨道交通形变特征探测中的应用[J].测绘学报,2016,45(6):713-721.
[8]	杨帆,张磊,张子文,等.利用短基线集InSAR技术监测抚顺市地面沉降[J].测绘通报,2018(3):84-88.
[9]	范雪婷,李明巨,张大骞,等.基于多主影像相干目标小基线InSAR技术的无锡市地表沉降监测[J].现代测绘,2018,41(3):1-5.
[10]	姜德才,张永红,张继贤,等.天津市地铁线不均匀地表沉降InSAR监测[J].遥感信息,2017,32(6):27-32.
[11]	贾煦,宫辉力,陈蓓蓓,等.不均匀地面沉降对北京地铁15号线运营的影响分析[J].遥感信息,2014,29(6):58-63.
[12]	漆泰岳.地铁施工引起地层和建筑物沉降特征研究[J].岩土工程学报,2012,34(7):1283-1290.
[13]	秦晓琼,廖明生,杨梦诗,等.应用高分辨率PS-InSAR技术监测上海动迁房歪斜形变[J].测绘通报,2016(6):18-21,86.
[14]	张涛,常永青,武健强.南京河西地区地面沉降研究[J].城市地质,2017,12(2):23-29.
[15]	郭乐萍,岳建平,岳顺.SBAS技术在南京河西地表沉降监测中的应用[J].测绘通报,2017(3):26-28,41.