Journal of Geo-information Science >
The Subsidence Monitoring of Beijing-Tianjin High-speed Railway Based on PS-InSAR
Received date: 2017-05-21
Request revised date: 2017-08-14
Online published: 2017-10-20
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The Beijing-Tianjin high-speed railway is the first high-speed railway in China. The stability of the geological environment is crucial for the safe operation of the high-speed railway. Land subsidence especially uneven subsidence will probably cause the deformation of the roadbed and bridge, which may affect the safety of high-speed railway operation. Therefore, it has very important significance for land subsidence monitoring along the high-speed railway. Interferometric synthetic aperture radar (InSAR) is an effective way for monitoring land subsidence with high precision. Based on 45 high-resolution TerraSAR-X images acquired from 2010 to 2015, the Permanent Scatter Interferometry (PS-InSAR) is empolyed to obtain land subsidence information along Beijing-Tianjin high-speed railway in Beijing section. The results indicate that there exist different spatial distributions of the land subsidence along the high-speed railway, the annual subsidence rate from Beijing south railway station to Shilihe interval is less than 10 mm/a, and from Shilihe to Shibalidian interval the annual subsidence rate ranges from 10 to 40 mm/a. And the maximum annual subsidence rate reaches 90mm/a from Yizhuang station to the east interval. The comprehensive analysis of static-dynamic loadings and hydrogeological data can help to understand the causes of land subsidence along high-speed railway. Over-exploitation of groundwater is the main factor of land subsidence in the study area, and the combination of dynamic and static loadings have certain influence on land subsidence. To some extent, the land subsidence along the high-speed railway is controlled by the Nanyuan-Tongzhou fault and the Jiugong fault, and most parts of the land subsidence are located in the Daxing uplifted belt with thick clay layer.
ZHOU Yuying , CHEN Mi , GONG Huili , LI Xiaojuan , YU Jie , ZHU Xiuxing . The Subsidence Monitoring of Beijing-Tianjin High-speed Railway Based on PS-InSAR[J]. Journal of Geo-information Science, 2017 , 19(10) : 1393 -1403 . DOI: 10.3724/SP.J.1047.2017.01393
Fig. 1 The flow chart of PS-InSAR technique图1 PS-InSAR技术处理流程 |
Fig. 2 The image of Beijing-Tianjin high-speed railway图2 京津高铁影像范围 |
Fig. 3 Spatial-temporal baseline distribution of the dataset图3 数据集时空基线分布图 |
Tab. 1 The information of spatial baseline and time baseline表1 干涉对对应空间基线和时间基线信息 |
干涉对 | 主影像 | 辅影像 | 空间基线/m | 时间基线/d | 干涉对 | 主影像 | 辅影像 | 空间基线/m | 时间基线/d |
---|---|---|---|---|---|---|---|---|---|
1 | 2012-07-05 | 2010-04-13 | 35.51 | -814 | 24 | 2012-07-05 | 2013-01-19 | -187.64 | 198 |
2 | 2012-07-05 | 2010-05-27 | -121.76 | -770 | 25 | 2012-07-05 | 2013-02-21 | 127.17 | 231 |
3 | 2012-07-05 | 2010-07-10 | 22.81 | -726 | 26 | 2012-07-05 | 2013-03-26 | -265.72 | 264 |
4 | 2012-07-05 | 2010-08-23 | 128.17 | -682 | 27 | 2012-07-05 | 2013-04-17 | -217.41 | 286 |
5 | 2012-07-05 | 2010-11-19 | -16.82 | -594 | 28 | 2012-07-05 | 2013-05-09 | -14.94 | 308 |
6 | 2012-07-05 | 2011-01-02 | -330.13 | -550 | 29 | 2012-07-05 | 2013-05-31 | -130.48 | 330 |
7 | 2012-07-05 | 2011-02-15 | -416.43 | -506 | 30 | 2012-07-05 | 2013-07-03 | -319.69 | 363 |
8 | 2012-07-05 | 2011-04-22 | -31.27 | -440 | 31 | 2012-07-05 | 2013-08-05 | 128.48 | 396 |
9 | 2012-07-05 | 2011-06-27 | 51.95 | -374 | 32 | 2012-07-05 | 2013-09-07 | -28.48 | 429 |
10 | 2012-07-05 | 2011-09-01 | 26.65 | -308 | 33 | 2012-07-05 | 2013-11-01 | 12.53 | 484 |
11 | 2012-07-05 | 2011-09-23 | 10.22 | -286 | 34 | 2012-07-05 | 2013-12-15 | -34.56 | 528 |
12 | 2012-07-05 | 2011-11-06 | 112.48 | -242 | 35 | 2012-07-05 | 2014-01-28 | -22.80 | 572 |
13 | 2012-07-05 | 2011-12-20 | -50.54 | -198 | 36 | 2012-07-05 | 2014-06-09 | -394.09 | 704 |
14 | 2012-07-05 | 2012-02-02 | 221.30 | -154 | 37 | 2012-07-05 | 2014-09-05 | -134.91 | 792 |
15 | 2012-07-05 | 2012-02-24 | 10.76 | -132 | 38 | 2012-07-05 | 2014-12-02 | 108.95 | 880 |
16 | 2012-07-05 | 2012-04-08 | -60.16 | -88 | 39 | 2012-07-05 | 2014-12-13 | 130.13 | 891 |
17 | 2012-07-05 | 2012-04-30 | 69.68 | -66 | 40 | 2012-07-05 | 2015-01-04 | -586.32 | 913 |
18 | 2012-07-05 | 2012-06-02 | -428.82 | -33 | 41 | 2012-07-05 | 2015-01-15 | 132.81 | 924 |
19 | 2012-07-05 | 2012-07-05 | 0.00 | 0 | 42 | 2012-07-05 | 2015-02-17 | 85.52 | 957 |
20 | 2012-07-05 | 2012-08-07 | -366.04 | 33 | 43 | 2012-07-05 | 2015-03-22 | 293.60 | 990 |
21 | 2012-07-05 | 2012-09-09 | 409.56 | 66 | 44 | 2012-07-05 | 2015-04-24 | 58.93 | 1023 |
22 | 2012-07-05 | 2012-10-12 | -401.19 | 99 | 45 | 2012-07-05 | 2015-05-27 | 250.61 | 1056 |
23 | 2012-07-05 | 2012-11-14 | -487.79 | 132 |
Tab. 2 The comparative validation results of InSAR and leveling表2 对应 InSAR 结果和水准测量对比验证 |
点号 | 水准点测量/(mm/a) | InSAR测量/(mm/a) | 误差/mm |
---|---|---|---|
P1 | 1.400 | -0.225 | -1.622 |
P2 | -50.20 | -51.69 | -1.490 |
P3 | -55.80 | -55.70 | 0.100 |
P4 | -3.900 | -1.335 | 2.565 |
Fig. 4 The subsidence velocity图4 年均沉降速率 |
Fig. 5 Settling volume and the superposition of the groundwater from 2010 to 2014图5 2010-2014年沉降量与地下水水位叠加图 |
Fig. 6 Setting volume and the superposition of precipitation from 2010 to 2014图6 2010-2014年沉降量与降雨量叠加图 |
Tab. 3 Statistics of the groundwater (elevation) and rain表3 2010-2014年地下水位(标高)与降雨量 |
年份 | 地下水位/m | 降雨量/mm |
---|---|---|
2010 | 13.8~15.5 | 399~434 |
2011 | 13.8~15.5 | 537~706 |
2012 | 10.3~15.5 | 707~905 |
2013 | 8.47~15.5 | 476~503 |
2014 | 10.3~15.5 | 435~503 |
Fig. 7 Comparison of subsidence in groundwater influence in 2013 and 2014图7 地下水作用下2013年和2014年沉降量对比 |
Fig. 8 Building distribution in DK14-DK17图8 DK14-DK17路段建筑分布图 |
Fig. 9 The subsidence with architectural changed in 2012 and 2014图9 2012年和2014年建筑变化沉降量 |
Fig. 10 Setting volume from 2010 to 2014图10 2010-2014年沉降量 |
Fig. 11 Fault zone in the study area图11 研究区断裂带图 |
The authors have declared that no competing interests exist.
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