| 安全,况忠,陈红,奚世军,胡邦红,卢定彪,李思发,李亮,安亚运.贵州西部矿区地表沉陷监测[J].贵州地质,2023,40(2):177-184 |
| 贵州西部矿区地表沉陷监测 |
| Monitoring of Surface Subsidence of Mining Area in Western Guizhou Based on SBAS-lnSAR Technology and Sentinenl-1A Image |
| 投稿时间：2023-01-19 |
| DOI： |
| 中文关键词: 矿区地面沉陷 SBAS-InSAR技术 Sentinenl-1A影像 沉降监测 贵州西部 |
| 英文关键词:Mining area subsidence SBAS-InSAR technology Sentinenl-1A image Settlement monitoring Western Guizhou |
| 基金项目:贵州省地质矿产勘查开发局地质科研项目(合同编号:黔地矿科合[2021]23号)、贵州省矿产资源国情调查项目(项目编号:GZGT-2020-002、黔科合基础-ZK[2023]一般193) |
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| 中文摘要: |
| 为了有效监测贵州西部地区因长期进行地下采矿引起的地面持续性沉降，本文以纳雍县中岭煤矿区为研究区，基于SBAS-InSAR 技术，对覆盖其范围的91期Sentinenl-1A 升轨影像(2019—2021年间)，利用SVD奇异值准则获取了观测时段内的地面沉降范围和深度，进行了时序分析，通过采煤工作面和野外调查等手段，验证了监测结果的准确性与可靠性。结果表明:(1)在观测时段内，在研究区共探查到3处典型持续沉降中心，其视线向(Line of sight，LOS)年平均形变速率变化范围在3192-4856 mm·a-1，最大沉降速率达到-4856 mm·a-1；(2)通过分析认为，研究区形变特征符合采矿沉陷规律，且随着时间的累积，沉降变形从起初不明显到变化剧烈，再到逐渐趋于稳定过程，其范围特征呈东西向延伸，渐有合并趋势，并不断向南北向扩张。从验证情况分析，认为基于SBAS-InSAR 技术获取的地面沉降信息可靠，准确率达85%以上，可为矿山安全开采、沉降灾害的预治提供参考。 |
| 英文摘要: |
| In order to effectively monitor the persistent land subsidence caused by long-term underground mining in western Guizhou，in this paper，it takes the Zhongling coal mining area in Nayong County as the study area，based on SBAS-InSAR technology，91 Sentinenl-1A orbit images(2019—2021) covering the area are used to monitor the persistent land subsidence. The range and depth of land subsidence during the observation period were obtained by using the singular value criterion of SVD，and the time series analysis was carried out. The accuracy and reliability of the monitoring results were verified by means of coal mining face and field investigation. The results show that: (1) During the observation period，three typical continuous subsidence centers were detected in the study area，and the annual average deformation rate along the Line of sight (LOS) ranged from 31.92 to -48.56 mm·a-1，with the maximum subsidence rate reaching -48.56 mm · a-1；(2) Through the analysis，it is considered that the deformation characteristics of the study area are in line with the law of mining subsidence，and with the accumulation of time，the subsidence deformation is not obvious at first，then changes dramatically，and then gradually tends to be stable，its range characteristics extend from east to west，gradually merge，and continue to expand to north and south. From the analysis of the verification，it is considered that the land subsidence information obtained based on SBAS-InSAR technology is reliable，and the accuracy rate is more than 85%，which can provide a reference for the safe mining of mines and the prevention of subsidence disasters. |
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