Assessment of radar interferometry performance for ground subsidence monitoring due to underground mining

Jinchuan nickel mine is the largest cut-and fill mining mine in China. After keep successive mining for nearly twenty years, it appeared serious ground fissures. A major thrust of this paper is to discuss the distribution features, deformation regularities, development tendency and formation mechanisms of ground fissures based on long-term subsidence monitoring and investigation. The results showed that large-scale ground subsidence basin has been developed in the mine area, and the ground fissures mainly scattered in the tensile zone of the subsidence basin. Besides, ground fissures have the features of compressive shear or tensile mechanical properties and zonary pattern. Unfortunately, with the mining scale keep expanding, both the quantity and width of the ground fissures increased rapidly. This will be unfavourable to safety of mining and engineering facilities. Therefore, strengthened monitoring and prevention works are essentially important to the similar mines which designed with cut-and-fill mining method.

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A novel approach of determining the parameters of Asadi profiling function for predictiong ground subsidence due to inclied coal seam mining at Quang Ninh coal basin

Journal of Mining and Earth Sciences ◽

10.46326/jmes.2020.61(2).10 ◽

2020 ◽

Vol 61 (2) ◽

pp. 86-95

Author(s):

Long Quoc Nguyen ◽

Keyword(s):

Underground Mining ◽

Mean Absolute Error ◽

Absolute Error ◽

Ground Subsidence ◽

Coal Basin ◽

Novel Approach ◽

Maximum Subsidence ◽

Seam Mining ◽

Subsidence Monitoring ◽

Quang Ninh

In this paper, we proposed a novel approach for estimating preliminary values of parameters of the Asadi profiling function (APF), then the least-squares principle was used with these preliminary values and ground subsidence monitoring data at the Thong Nhat underground mine to determine to the final parameters of the APF. This function was employed to predict ground subsidence at the Mong Duong mine where there are geological and rock geomachenial conditions well as seams’ inclination similar to those of Thong Nhat mine. The results show that the Rood Mean Square Error (RMSE) and Mean Absolute Error (MAE) equal to 0.081 m and 0.055 m or 9.9% and 6.7% of maximum subsidence, respectively, and a correlation coefficient of 0.973. These results prove that the APF with calculated parameters can be used to predict ground subsidence due to underground mining in the areas that have the similar conditions to Thong Nhat mine.

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Impact of ground subsidence on the Beijing–Tianjin high-speed railway as mapped by radar interferometry

Annals of GIS ◽

10.1080/19475683.2010.492125 ◽

2010 ◽

Vol 16 (2) ◽

pp. 91-102 ◽

Cited By ~ 8

Author(s):

Linlin Ge ◽

Xiaojing Li ◽

Hsing-chung Chang ◽

Alex Hayman Ng ◽

Kui Zhang ◽

...

Keyword(s):

High Speed ◽

Radar Interferometry ◽

Ground Subsidence ◽

High Speed Railway

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Improved Ground Subsidence Monitoring Using Small Baseline SAR Interferograms and a Weighted Least Squares Inversion Algorithm

IEEE Geoscience and Remote Sensing Letters ◽

10.1109/lgrs.2011.2170952 ◽

2012 ◽

Vol 9 (3) ◽

pp. 437-441 ◽

Cited By ~ 25

Author(s):

Vahid Akbari ◽

Mahdi Motagh

Keyword(s):

Least Squares ◽

Weighted Least Squares ◽

Ground Subsidence ◽

Inversion Algorithm ◽

Small Baseline ◽

Subsidence Monitoring

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Ground Subsidence Monitoring in Hong Kong with Satellite SAR Interferometry

Photogrammetric Engineering & Remote Sensing ◽

10.14358/pers.70.10.1151 ◽

2004 ◽

Vol 70 (10) ◽

pp. 1151-1156 ◽

Cited By ~ 70

Author(s):

X.L. Ding ◽

G.X. Liu ◽

Z.W. Li ◽

Z.L. Li ◽

Y.Q. Chen

Keyword(s):

Hong Kong ◽

Sar Interferometry ◽

Ground Subsidence ◽

Subsidence Monitoring

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Analysis on Ground Subsidence in Underground Mining

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.383-390.2201 ◽

2011 ◽

Vol 383-390 ◽

pp. 2201-2205

Author(s):

Xin Xi Liu ◽

Xue Zhi Wang

Keyword(s):

Underground Mining ◽

Ground Deformation ◽

Coal Pillar ◽

Mining Area ◽

Ground Subsidence ◽

Recovery Coefficient ◽

Mining Width ◽

Movement And Deformation ◽

Relationship Of ◽

The Relationship

Analysis on the characters of ground subsidence of Yangjiaping mining area, with same excavation depth and recovery coefficient, the numerical simulations to nonlinear large deformation using finite-difference method(FLAC) are achieved on the different strip extraction schemes that adopted different mining and reservation width. The result indicates that the subsidence values and horizontal deformation increases with the increasing of the strip extraction width on condition of the same recovery rate. Based on probability density function (PDF) method, the relationship of the coal pillar width, the mining width and ground deformation is acquired, which is some useful reference for using the strip extraction method to control the surface movement and deformation.

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Geometry of surface deformations caused by induced shocks in the area of underground copper exploitation

10.5194/egusphere-egu2020-11185 ◽

2020 ◽

Author(s):

Karolina Owczarz ◽

Anna Kopeć ◽

Dariusz Głąbicki

Keyword(s):

Surface Deformation ◽

Underground Mining ◽

Surface Displacement ◽

3D Models ◽

Radar Interferometry ◽

Time Interval ◽

Mining Operations ◽

Copper Ore ◽

Surface Displacements ◽

Satellite Radar

<p>The level of intensity of induced seismic phenomena occurring in areas of mining activity is very diverse. Induced shocks may be directly related to the exploitation carried out or to mining and tectonic factors. In the case of impact on the surface, two types of mining tremors are distinguished: energetically weak shocks, not causing surface deformation, and shocks exceeding a certain energy level, which cause terrain deformations. Surface displacements are the most common form of the effects of underground mining operations, including induced seismicity. Geological research uses Sentinel-1 imagery to determine the geometry of surface displacements that were caused by induced shocks by satellite radar interferometry. In this research four induced shocks with magnitude M>4.0 was used, which occurred in the Legnica-Glogow Copper District in the Rudna mine. This area is one of the most seismically active places in Poland due to the underground exploitation of copper ore. For calculations, the differential satellite radar interferometry (DInSAR) method was used. The DInSAR technique allowed the determination of surface displacement towards the Line of Sight (LOS) between two images acquired at different times (before and after induced shock) with millimeter accuracy. In the presented research calculations were carried out separately for observations acquired in descending and ascending orbits. The Sentinel-1 satellites are a constellation of two radar satellites that observe the surface of lands and oceans at a time interval of 6 days. Therefore, 6 days, 12 days, 18 days and 24 days were assumed as the time intervals between the images. Vertical displacements were calculated based on the generated LOS displacement maps. In addition, charts of subsidence in the N-S and W-E directions were prepared, 3D models of subsidence were made, and deformation geometry was analyzed for individual shocks. As a result of the research, the spatial extent of deformation in the horizontal surface was determined: N-S and W-E, which in both directions was over 2 km. However, surface displacements caused by induced shocks reached values up to 10 cm.</p>

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