高海拔排土场边坡安全稳定性SBAS-InSAR监测

doi:10.16265/j.cnki.issn1003-3033.2022.01.013

中国安全科学学报 ›› 2022, Vol. 32 ›› Issue (1): 92-101.doi: 10.16265/j.cnki.issn1003-3033.2022.01.013

高海拔排土场边坡安全稳定性SBAS-InSAR监测

董建军¹^,²(), 梅媛¹^,², 李昕¹^,², 刘士乙³, 闫斌⁴

¹辽宁工程技术大学安全科学与工程学院,辽宁葫芦岛 125105
²辽宁工程技术大学矿山热动力灾害与防治教育部重点实验室,辽宁葫芦岛 125105
³东北大学资源与土木工程学院,辽宁沈阳,110819
⁴华新水泥股份有限公司西部区域西藏基地,西藏山南 856000

收稿日期:2021-10-22 修回日期:2021-12-05 出版日期:2022-01-28 发布日期:2022-07-28
作者简介:
董建军(1978—),男,辽宁绥中人,博士,副教授,主要从事土木工程安全与防灾方面的研究。E-mail: dongjnjn@163.com。
董建军副教授
基金资助:
国家自然科学基金资助(52074148); 辽宁省教育厅科学研究经费项目(LJ2020JCL019)

SBAS-InSAR monitoring of slope safety and stability of high altitude dumps

DONG Jianjun¹^,²(), MEI Yuan¹^,², LI Xin¹^,², LIU Shiyi³, YAN Bin⁴

¹College of Safety Science and Engineering, Liaoning Technical University, Huludao Liaoning 125105, China
²Key Laboratory of Mine Thermodynamic Disasters and Control of Ministry of Education,Liaoning Technical University, Huludao Liaoning 125105, China
³School of Resources and Civil Engineering, Northeastern University, Shenyang Liaoning 110819, China
⁴Tibet Base, Western Region, Huaxin Cement Co. Ltd., Shannan Tibet 856000, China

Received:2021-10-22 Revised:2021-12-05 Online:2022-01-28 Published:2022-07-28

摘要/Abstract

摘要：

为解决高海拔排土场边坡安全稳定性监测中常规监测仪器布置和人员值守的高投入、高风险问题,分析西藏山南桑日县某排土场边坡25景Sentinel-1A数据,利用短基线集合成孔径雷达干涉测量(SBAS-InSAR)技术监测终了排土场边坡从2018年11月4日—2020年12月23日期间的地表形变,采用基线估计状态空间模型、自适应滤波和最小费用流进行相位解缠,经过影像配准、干涉处理和去平地效应,考虑高海拔地区跨越干湿季时温度和降雨对数据的影响,生成平均形变速率图,基于形变监测结果评判该排土场边坡的安全稳定状态。结果表明:该排土场边坡坡体2018-2020年的平均形变速率最大值为-13.90 mm/a,且在2020年6月,达到黄色预警阈值,采取必要的防治措施后,沉降速率趋缓得到了有效控制。实践表明:SBAS-InSAR应用于高海拔排土场边坡,能够实现动态、全面覆盖、长期可靠的安全稳定性监测。

关键词: 高海拔, 排土场边坡, 安全稳定性, 短基线集合成孔径雷达干涉测量(SBAS-InSAR), 形变监测

Abstract:

In order to solve the problem of high investment and high risk in the arrangement of conventional monitoring instruments and personnel on duty for monitoring of slope safety and stability of high-altitude dumps, Sentinel-1A data of 25 scenarios for a dump site in Sangri County, Shannan, Tibet were studied. SBAS-InSAR was used to monitor the surface deformation of the final dump's slope from November 4, 2018 to December 23, 2020. Then, baseline estimation state-space model, perform adaptive filtering and minimum cost stream were adopted for phase unwrapping, and image registration, interference processing and flat ground effect calculation were performed. Finally, considering the influence of temperature and rainfall on data in high-altitude areas across dry and wet seasons, an average deformation rate map was generated, and safe and stable states of the dump's slope were evaluated based on results of deformation monitoring. The results show that the maximum average deformation rate of the example from 2018 to 2020 was -13.9 0mm/a, and it reached the yellow warning threshold on June, 2020. With necessary preventive steps being taken, the settlement rate is effectively controlled and slowed down. The practical results indicate the application of SBAS-InSAR can achieve dynamic, comprehensive coverage, and long-term reliable monitoring of slope safety and stability of high-altitude dumps.

Key words: high altitude, dump slope, safety and stability, small baseline subset-interferometric synthetic aperture radar(SBAS-InSAR), deformation monitoring

董建军, 梅媛, 李昕, 刘士乙, 闫斌. 高海拔排土场边坡安全稳定性SBAS-InSAR监测[J]. 中国安全科学学报, 2022, 32(1): 92-101.

DONG Jianjun, MEI Yuan, LI Xin, LIU Shiyi, YAN Bin. SBAS-InSAR monitoring of slope safety and stability of high altitude dumps[J]. China Safety Science Journal, 2022, 32(1): 92-101.

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序号	日期	序号	日期
1	2018-11-04	14	2020-01-22
2	2018-12-10	15	2020-02-27
3	2019-01-03	16	2020-03-22
4	2019-02-08	17	2020-04-03
5	2019-03-04	18	2020-05-09
6	2019-05-03	19	2020-06-26
7	2019-06-08	20	2020-07-20
8	2019-07-02	21	2020-08-13
9	2019-08-07	22	2020-09-06
10	2019-09-24	23	2020-10-24
序号	日期	序号	日期
11	2019-10-30	24	2020-11-17
12	2019-11-23	25	2020-12-23
13	2019-12-29

高海拔排土场边坡安全稳定性SBAS-InSAR监测

SBAS-InSAR monitoring of slope safety and stability of high altitude dumps

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