Analysis on surface dynamic subsidence in grouting mining area based on TSS-DInSAR method

被引：0
|
作者：
Wang J. [1 ]
Dong X. [2 ]
Yang K. [1 ]
Yao S. [1 ]
Shi X. [1 ]
机构：
[1] College of Geoscience and Surveying Engineering, China University of Mining and Technology(Beijing), Beijing
[2] General Defense Geological Survey Department, Huaibei Mining Co. Ltd., Huaibei
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2020年 / 51卷 / 07期
基金：
中国国家自然科学基金; 中央高校基本科研业务费专项资金资助;
关键词：
Analysis of reducing subsidence; DInSAR; Grouting filling; Mining subsidence; Time series stacking;
D O I：
10.11817/j.issn.1672-7207.2020.07.018
中图分类号：
学科分类号：
摘要：
The time series subsidence velocity and cumulative subsidence information were obtained by the time series stacking DInSAR(TSS-DInSAR) of two-pass method in the Ⅱ2 mining area with partially grouting filling of Linhuan coalmine of Huaibei Mining Group from 2016-11-21 to 2017-02-25. Subsequently, the dynamic subsidence laws of the area surface were analyzed based on the monitoring results. At last, the accuracy verification and regression analysis were carried out by means of the measured leveling data. The results show that the surface subsidence basin is in the active period of sinking during the study period, and two subsidence centers are formed on the Ⅱ1021 working face and the northwest side of the 1021 working face. The finally cumulative maximum subsidence values of the two subsidence value centers are 185 mm and 169 mm, respectively. Affected by the grouting filling, the subsidence velocity, subsidence and subsidence range of the mining area surface decrease significantly and the subsidence basin is obviously asymmetric. The RMSE is 19.7 mm (R2=0.910 4, p<0.001) after three phase decoherence points are removed. The effect of reducing subsidence by grouting is remarkable, and the TSS-DInSAR can provide a reliable and cost-effective method to monitor and analyze surface subsidence in mining area. © 2020, Central South University Press. All right reserved.
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页码：1924 / 1935
页数：11
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