Research on ground deformation monitoring method in mining areas using the probability integral model fusion D-InSAR, sub-band InSAR and offset-tracking

Wang, Liuyu; Deng, Kazhong; Zheng, Meinan

doi:10.1016/j.jag.2019.101981

Cited by 60 publications

(38 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the probability integral method [32], taking the equivalent mining thickness at a point (s, t) in the affected area of the gob as M d (s, t), so the settlement at any point (x, y) on the ground surface can be calculated using formula (13). en, the tilt (i (x,y,φ) ), horizontal movement (U (x,y,φ) ), curvature (K (x,y,φ) ), and horizontal deformation (ε (x,y,φ) ) in a given φ direction can be calculated using formula (14).…”

Section: Prediction By the Probability Integral Methodmentioning

confidence: 99%

Research on the Settlement Regulation and Stability of Large Building Foundation over Gobs: A Case Study in the Xiangcheng Coal Mine, China

Guo

Bing-nan

Zhang

et al. 2021

Shock and Vibration

View full text Add to dashboard Cite

Due to the acceleration of urbanization in China, the land use and new building construction in mining subsidence areas are increasing. However, a large high-rise building (100 m × 80 m × 100 m) was planned to be built above gob areas in the Xiangcheng Mine subsidence area. According to the analysis of the borehole exploration data, borehole TV observations, and theoretical calculations, there were broken bedrock and developmental fractures in the fracture and caved zones above the gob areas. In addition, the depth affected by the building load is less than 9 m from the top of the fracture zone; thus, the stabilities of the gobs are low. Then, through the theoretical analysis of the space stress, compression settlement of foundation soil, and residual settlement of the gob and coal pillar under loads, combining the similar simulation study on settlement characteristics of foundation soil and gobs, the total settlement of the foundation can be regarded as the vector superposition of the compression settlement and residual settlement; then, the maximum settlement is calculated as 555 mm and the maximum tilt is 14.9 mm/m under the building load, which are greater than the permissible values of 200 mm and 2 mm/m, indicating that the foundation’s stability is inadequate. Therefore, the treatment measures of the deep pile group foundations in the soil layer and grouting reinforcement in the gobs were simultaneously put forward to effectively improve the stability of the building foundations.

show abstract

Section: Prediction By the Probability Integral Methodmentioning

confidence: 99%

Research on the Settlement Regulation and Stability of Large Building Foundation over Gobs: A Case Study in the Xiangcheng Coal Mine, China

Guo

Bing-nan

Zhang

et al. 2021

Shock and Vibration

View full text Add to dashboard Cite

show abstract

“…The offset tracking method based on SAR intensity uses normalized cross-correlation (NCC) of the input SAR intensity images to estimate the extent of deformation in both the slant range (line-of-sight of the satellite) and the azimuth (along the orbit of the satellite) directions [28]. Compared with interferometric phase measurements, OT is based on the amplitude information of SAR data and has relatively lower accuracy, typically on the order of 1/30th of a pixel for both range and azimuth directions [29], but OT has a unique advantage in calculating large deformations at the meter level produced by coal mines and is less vulnerability to temporal and spatial decorrelation.…”

Section: Offset Tracking Processingmentioning

confidence: 99%

Research on Surface Deformation of Ordos Coal Mining Area by Integrating Multitemporal D‐InSAR and Offset Tracking Technology

Yao

et al. 2021

Journal of Sensors

View full text Add to dashboard Cite

Underground mining in coal mining areas will induce large-scale, large-gradient surface deformation, threatening the safety of people’s lives and property in nearby areas. Due to mining-related subsidence is characterized by fast displacement and high nonlinearity, monitoring this process by using traditional and single interferometric synthetic aperture radar (InSAR) technology is very challenging, and it cannot accurately and quantitatively calculate the deformation of the mining area. In this paper, we proposed a new method that combines both multitemporal consecutive D-InSAR and offset tracking technology to construct a complete deformation field of the coal mining area. Taking into account the accuracy of multitemporal consecutive D-InSAR in calculating small deformation areas and the ability of offset tracking to measure large deformation areas, we utilized their respective advantages to extract the surface influence range and applied an adaptive spatial filtering method to integrate their respective results for inversion of the deformation field. 12 ascending high-resolution TerraSAR-X images (2 m) from September 3, 2018, to October 26, 2019, and 39 descending Sentinel-1 TOPS SAR images from August 5, 2018, to November 4, 2019, in the Ordos Coalfield located at Inner Mongolia, China, were utilized to obtain the whole subsidence field of the working faces F6211 and F6207 during the 454-day mining period. The GPS monitoring station located in the direction of the mining surface is used to verify the accuracy of the above method; at the same time, to a certain extent, the difference between the unmanned aerial vehicle’s DSM data acquired after coal mining and the Shuttle Radar Topography Mission (STRM) DEM can qualitatively verify the accuracy of the results. Our results show that the results of TerraSAR are basically consistent with the deformation trend of GPS data, and that of Sentinel-1 have large errors compared with GPS. The maximum central subsidence reaches ~12 m in the working face F6211 and ~4 m in the working face F6207. In the working face F6207, the good agreement between GPS and TerraSAR results indicated that the method above using high-resolution SAR data could be reliable for monitoring the large deformation area in the mining field.

show abstract

“…Examples provided to date in the literature indicate that synthetic aperture radar interferometry (InSAR) allows for the detection of local ground surface changes. Based on the SAR satellites that are currently active, we can calculate displacements of the Earth's crust caused by such phenomena as mining activity (both underground and on the surface) [1,2], landslides [3][4][5], oil and gas extraction [6,7], pumping water from underground reservoirs [8,9] and floods [10,11]. These phenomena also include induced seismic events, which-if powerful enough-may lead to the development of long-lasting displacements on the ground surface.…”

Section: Introductionmentioning

confidence: 99%

Induced Seismic Events—Distribution of Ground Surface Displacements Based on InSAR Methods and Mogi and Yang Models

et al. 2021

View full text Add to dashboard Cite

In this article, we present a possible approach to use satellite radar data for a complete description of the formation process of a subsidence trough resulting from an induced seismic event—a mining tremor. Our main goal was to verify whether SAR data allow for the calculation of the basic indicators for the trough (w—subsidence, T—trough slope, K—curvature, u—horizontal displacements, ε—horizontal deformations). We verified the extent to which the Mogi and Yang models can be fitted to match the actual displacements recorded after an induced seismic tremor. The calculations were performed for the Legnica-Glogow Copper Belt (LGCB) area in southwest Poland. Due to intensive mining operations and specific geological and tectonic conditions, the area shows a high level of induced seismic activity. Our detailed analysis focused on four powerful mining tremors: the first tremor occurred on 29 November 2016 (MW3.4), the second on 7 December 2017 (MW3.3), the next on 26 December 2017 (MW3.6) and the last tremor on 29 January 2019 (MW3.7). For each analyzed event, we determined the displacements based on the Differential Interferometric Synthetic Aperture Radar (DInSAR) method and Sentinel 1 synthetic aperture radar (SAR) data from two paths (22 and 73). Additionally, for the period from November 2014 to October 2020, we calculated the displacements using the Small Baseline Subset method (SBAS) time series method. In all cases, the tremor was followed by the development of long-lasting surface deformations. The obtained results allowed us to conclude that it is possible to calculate indicators that result from a specific induced mining event. Considering the full moment tensor and nature of the tremor source, we demonstrated that the Mogi and Yang models can be employed to describe the influence of an induced tremor on the surface in an area of mining activity. We also confirmed the global character of the influence of the reduced troposphere on SAR data calculations. Our conclusions indicate that accounting for the tropospheric correction does not distort horizontal and vertical displacement values in regions influenced by mining activity/tremors.

show abstract

Research on ground deformation monitoring method in mining areas using the probability integral model fusion D-InSAR, sub-band InSAR and offset-tracking

Cited by 60 publications

References 30 publications

Research on the Settlement Regulation and Stability of Large Building Foundation over Gobs: A Case Study in the Xiangcheng Coal Mine, China

Research on the Settlement Regulation and Stability of Large Building Foundation over Gobs: A Case Study in the Xiangcheng Coal Mine, China

Research on Surface Deformation of Ordos Coal Mining Area by Integrating Multitemporal D‐InSAR and Offset Tracking Technology

Induced Seismic Events—Distribution of Ground Surface Displacements Based on InSAR Methods and Mogi and Yang Models

Contact Info

Product

Resources

About