scholarly journals INTEGRATED SAR TECHNOLOGIES FOR MONITORING THE STABILITY OF MINE SITES: APPLICATION USING TERRASAR-X AND RADARSAT-2 IMAGES

2015 ◽  
Vol XL-7/W3 ◽  
pp. 1057-1062 ◽  
Author(s):  
M. Rheault ◽  
Y. Bouroubi ◽  
V. Sarago ◽  
P. T. Nguyen-Xuan ◽  
P. Bugnet ◽  
...  
Keyword(s):  
Surface Deformation ◽  
Ground Surface ◽  
Surface Subsidence ◽  
Sar Interferometry ◽  
Open Pit ◽  
Large Area ◽  
Mining Sites ◽  
Thaw Cycle ◽  
Surface Displacements ◽  
The Stability

The last three decades have seen significant mining development in the northern regions of Canada, where the freeze and thaw cycle of permafrost and corresponding surface subsidence and heave represent a significant challenge at all mining stages, from the design of infrastructures to the monitoring of restored areas. Over the past ten years, SAR interferometry has been widely used to monitor ground surface deformation. With this technique, changes in phase between two SAR acquisitions are used to detect centimetre to millimetre surface displacements over a large area with high spatial resolution. This paper presents the results of a project that aims to develop a SAR solution to provide useful information for environmental monitoring and assessing the stability of mining sites. RADARSAT-2 and TerraSAR-X images acquired during the summer of 2014 were used to measure the displacements of ground surface, infrastructures and stockpiles caused by seasonal changes in permafrost extent. The study area is an open-pit mine located in Nunavut, northern Canada, in the continuous permafrost zone. Results shown that surface displacements calculated from RADARSAT-2 and TerraSAR-X are very similar and in agreement with scientific and terrain knowledge. Significant displacements were observed in loose soil areas while none was detected in bedrock and rock outcrop areas. The areas most affected by active layer changes showed surface subsidence during the thaw settlement period. Thus, InSAR can be used as a tool to guide the siting and design of new infrastructure as well as highlighting risks in areas of unstable terrain.

Study and Practice on the Technology of Filling Mining in Xin Wen Mining Area

2011 ◽  
Vol 121-126 ◽  
pp. 2892-2896
Author(s):  
Ming Tao Gao ◽  
Ming Zhang ◽  
Ming Zhou
Keyword(s):  
Mining Area ◽  
Scientific Basis ◽  
Surface Subsidence ◽  
Open Pit ◽  
Coal Waste ◽  
Coordinated Development ◽  
Underground Disposal ◽  
Rock Movement ◽  
The Stability ◽  
Technology Processes

Because of mine production, the open-pit enission of coal gangue solid waste and surface subsidence are one of important causes to failure the mining area land and environment, so the key technology, processes and equipment of filling mining to replace coal have been developed, which convergences the existing system of mining technology, And the stability theory of the control of filling mining rock movement and the method of surface subsidence prediction have been established, which provides a scientific basis for equipment Selection and the design of subsidence control; the key technologies of filling mining to replace coal is successfully applicated, which significantly improves the recovery rate of coal resources in China and constructs the new coordinated development model that is combined by the underground disposal of coal waste, mining subsidence control and the “under three”safe coal mining, through the above, the target of green mining and the coordinated development of mining social, economic and environmental will be achieved.

scholarly journals LAND SUBSIDENCE MONITORING USING PS-InSAR TECHNIQUE FOR L-BAND SAR DATA

2016 ◽  
Vol XLI-B7 ◽  
pp. 995-997 ◽  
Author(s):  
S. Thapa ◽  
R. S. Chatterjee ◽  
K. B. Singh ◽  
D. Kumar
Keyword(s):  
Time Series ◽  
Land Subsidence ◽  
Land Surface ◽  
Surface Deformation ◽  
Underground Mining ◽  
Ground Surface ◽  
Sar Interferometry ◽  
Persistent Scatterer Interferometry ◽  
Long Time ◽  
Subsidence Monitoring

Differential SAR-Interferometry (D-InSAR) is one of the potential source to measure land surface motion induced due to underground coal mining. However, this technique has many limitation such as atmospheric in homogeneities, spatial de-correlation, and temporal decorrelation. Persistent Scatterer Interferometry synthetic aperture radar (PS-InSAR) belongs to a family of time series InSAR technique, which utilizes the properties of some of the stable natural and anthropogenic targets which remain coherent over long time period. In this study PS-InSAR technique has been used to monitor land subsidence over selected location of Jharia Coal field which has been correlated with the ground levelling measurement. This time series deformation observed using PS InSAR helped us to understand the nature of the ground surface deformation due to underground mining activity.

Ground surface subsidence as effect of underground mining of the thick coal seams in the Jiu valley basin / Osiadanie gruntów wskutek wybierania pokładów o dużej miąższości w kopalniach zagłębia w dolinie Jiu

2012 ◽  
Vol 57 (3) ◽  
pp. 547-577 ◽  
Author(s):  
Ilie Onica ◽  
Dacian Marian
Keyword(s):  
Surface Deformation ◽  
Longwall Mining ◽  
Underground Mining ◽  
Ground Surface ◽  
Surface Subsidence ◽  
Coal Seams ◽  
Elasto Plasticity ◽  
Ground Surface Subsidence ◽  
Time Dependent Analysis

Abstract In the case of the thick and gentle coal seam no. 3 of the Jiu Valley Coal Basin (Romania), the mining methods are by use of the longwall mining technologies with roof control by caving or top coal caving. In this paper, it is presented the analysis of the complex deformations of the ground surface, over time, as a consequence of the coal mining in certain mining fields of the basin. Also, it is analysed the ground surface subsidence phenomenon using the CESAR-LCPC finite element code. The modelling is made in the elasticity and the elasto-plasticity behaviour hypothesis. Also, the time dependent analysis of the ground surface deformation was achieved with the aid of an especial profile function. The obtained results are compared with the in situ measurements data basis.

Mapping ground surface deformation using temporarily coherent point SAR interferometry: Application to Los Angeles Basin

2012 ◽  
Vol 117 ◽  
pp. 429-439 ◽  
Author(s):  
Lei Zhang ◽  
Zhong Lu ◽  
Xiaoli Ding ◽  
Hyung-sup Jung ◽  
Guangcai Feng ◽  
...  
Keyword(s):  
Los Angeles ◽  
Surface Deformation ◽  
Ground Surface ◽  
Sar Interferometry ◽  
Los Angeles Basin

scholarly journals Preliminary report on landslide early warning on August 20, 2021,in Nangqian County, Qinghai Province, China

2021 ◽  
Author(s):  
Xiangpeng Wang ◽  
Fanqiang Lin ◽  
Di Shen ◽  
Zhiyong Sun
Keyword(s):  
Early Warning ◽  
Surface Deformation ◽  
Development Trend ◽  
Unstable State ◽  
Mountainous Area ◽  
Qinghai Province ◽  
Thaw Cycle ◽  
Freeze Thaw Cycle ◽  
Basic Characteristics ◽  
The Stability

Abstract Based on the analysis of its formation mechanism, stability state and development trend, this paper focuses on monitoring key indicators such as surface deformation and rainfall to realize early warning of landslide and provide some guidance for landslide disaster prevention and avoidance in the alpine mountainous area of Nangqian, Qinghai Province. The landslide of the Baima Elin Monetary has the topographic and geomorphological conditions of landslide formation, and has the basic characteristics of being influenced by rainfall and climate, so the warning of the landslide should be comprehensive. At the same time, the current situation of the landslide is in an unstable state, and the seasonal freeze-thaw cycle will cause its stability to weaken further. Through macroscopic signs, it is predicted that the deformation of Baima Elin Monetary landslide will continue to intensify without a sign of abatement, and the stability will be further reduced after winter, tending to develop in an unfavorable direction, and engineering measures should be taken as soon as possible to manage it.

scholarly journals SURFACE SUBSIDENCE MONITORING AND ANALYZING IN BEIJING BASED ON INTERFEROMETRIC POINT TARGET ANALYSIS

2017 ◽  
Vol XLII-2/W7 ◽  
pp. 1049-1054
Author(s):  
Y. Sun ◽  
L. Lu
Keyword(s):  
Surface Deformation ◽  
Deformation Monitoring ◽  
Surface Subsidence ◽  
Sar Interferometry ◽  
Published Data ◽  
Groundwater Exploitation ◽  
Target Analysis ◽  
Point Target ◽  
Atmospheric Disturbances ◽  
Subsidence Monitoring

Temporal and geometrical decorrelation often prevents SAR interferometry from being an operational tool for surface deformation monitoring. Moreover, atmospheric disturbances can strongly compromise the accuracy of the results. In order to solve the above problem. In this paper, Interferometric Point Target Analysis (IPTA) technology was used to obtain surface deformation information with an area of 700&amp;thinsp;km<sup>2</sup> in Beijing. In the experiment, 20 TerraSAR-X images from October 2014 to June 2016 were selected to monitor the surface subsidence in Beijing and higher resolution and higher accuracy WorldDEM obtained by DLR was used to simulated terrain phase, so as to register the high-resolution TerraSAR-X image. The final results show the surface subsidence tendency of Beijing urban from October 2014 to June 2016: in the center of monitor area surface tends to be stable within approximately subsidence rate of 3&amp;thinsp;mm/a. In the east of monitor, the area of Chaoyang and Tongzhou, there are obvious subsidence phenomenon。This subsidence is affected by groundwater exploitation, flake subsidence it had an tendency of expanding to the east and south, and the maximum annual subsidence is more than 76&amp;thinsp;mm/year. The results of this monitoring are basically consistent with the published data of surface subsidence in Beijing.

Analysis of the Ground Surface Settlement of Metro Tunnel by Using Peck Formula

2014 ◽  
Vol 1065-1069 ◽  
pp. 414-420
Author(s):  
Xiong Fei Yang ◽  
Hong Yuan ◽  
Jia Yu Wu ◽  
Hou Mei Zhang
Keyword(s):  
Surface Deformation ◽  
Ground Surface ◽  
Surface Subsidence ◽  
Central Point ◽  
Surface Settlement ◽  
Point Method ◽  
Linear Regression Method ◽  
Tunnel Excavation ◽  
Ground Surface Settlement ◽  
Ground Surface Subsidence

Based on the peck formula, this paper has analyzed measured data of ground surface subsidence, and get the regression curve of ground surface subsidence. Expression for degree of reliability of the maximum ground surface settlement is derived analytically by using central-point method. On the basis of a certain section of tunnel of Guangzhou subway constructed by mining excavation method, linear regression method can be effectively fitting the ground surface deformation data due to tunnel excavation. The central-point method provides a new way for reliability analysis of the ground surface settlement of shield construction.

Analysis on Ground Settlement Induced by Shallow Buried Cross Channel of CRD Method under Artificial Filling

2013 ◽  
Vol 353-356 ◽  
pp. 1519-1524
Author(s):  
Jin Kui Li ◽  
Jing Jing Li ◽  
Liu Jie Du
Keyword(s):  
Surface Deformation ◽  
Settling Tank ◽  
Ground Surface ◽  
Surrounding Rock ◽  
Surface Settlement ◽  
Ground Settlement ◽  
Tunnel Face ◽  
Underground Tunnel ◽  
The Cross ◽  
The Stability

The shallow underground tunnel is near to the ground; its many construction procedures are complicated, supporting and excavation are intertwined. The ground surface deformation is complex during construction. Through the analysis of the cross passage surface settlement data of Dalian metro Line 1High-tech zone Street station, we found that the ground surface caused by artificial filling integrally sinks during excavation, the shape of its sinking is like a flat funnel, the characteristics of settling tank are obvious. The influence of faces constructing is obvious on surface settlement, and the transverse influence range is about 30m; the longitudinal influence range is about 15m. The results of the paper show that the place of monitoring points should be held at 15m ahead from the tunnel face, effectivemonitoring period is 70d. The monitoring results are enough and safe for the stability requirement of the surrounding rock.

scholarly journals Introduction of Integrated Mining Impact Monitoring – i<sup>2</sup>Mon Development Project

2020 ◽  
Vol 382 ◽  
pp. 225-229
Author(s):  
Chia-Hsiang Yang ◽  
Andreas Müterthies
Keyword(s):  
Monitoring System ◽  
Ground Deformation ◽  
Sar Interferometry ◽  
Ground Movement ◽  
Open Pit ◽  
Current Status ◽  
Large Area ◽  
Mining Operations ◽  
Impact Monitoring ◽  
Mining Impact

Abstract. Monitoring of mining areas and associanted dam stability, has become increasingly important as the awareness of safety and environmental protection is rising. An appropriate monitoring scheme is necessitated to legally activate, reactivate, or terminate mining operations. The project Integrated Mining Impact Monitoring (i2Mon) aims to identify and analyze mining-induced impact, in particular its ground deformation. The monitoring system comprises terrestrial measurement and remote sensing: levelling, GPS, LiDAR scanning, UAV survey, and SAR interferometry. For interpretation and prediction, modelling will be used to simulate local displacements by different factors. The final goal is to launch an interactive GIS-based platform as an early warning and decision making system for mining industry. Currently, the project is proceeding from a preparatory phase. This paper focuses on spaceborne SAR interferometry, whereby we can cost-effectively monitor ground movement at millimeter level over a large area. We introduce the prototype of our InSAR monitoring system. The test result from Sentinel-1 images shows the surface movement during 2018 at a deactivating open-pit coal mine in Germany. We discuss the current status, ongoing works, planned test sites in Poland, and how we integrate data from different sensors and approaches.

scholarly journals Localized Subsidence Zones in Gävle City Detected by Sentinel-1 PSI and Leveling Data

2020 ◽  
Vol 12 (16) ◽  
pp. 2629
Author(s):  
Nureldin A. A. Gido ◽  
Mohammad Bagherbandi ◽  
Faramarz Nilfouroushan
Keyword(s):  
Land Surface ◽  
Urban Areas ◽  
Surface Deformation ◽  
Subsurface Layer ◽  
Ground Surface ◽  
Surface Subsidence ◽  
Economic Consequences ◽  
Persistent Scatterer Interferometry ◽  
Persistent Scatterer ◽  
Spatio Temporal

Among different sets of constraints and hazards that have to be considered in the management of cities and land use, land surface subsidence is one of the important issues that can lead to many problems, and its economic consequences cannot be ignored. In this study, the ground surface deformation of Gävle city in Sweden is investigated using the Persistent Scatterer Interferometry (PSI) technique as well as analyzing the historical leveling data. The PSI technique is used to map the location of hazard zones and their ongoing subsidence rate. Two ascending and descending Sentinel-1 datasets, collected between January 2015 and May 2020, covering the Gävle city, were processed and analyzed. In addition, a long record of a leveling dataset, covering the period from 1974 to 2019, was used to detect the rate of subsidence in some locations which were not reported before. Our PSI analysis reveals that the center of Gävle is relatively stable with minor deformation ranged between −2 ± 0.5 mm/yr to +2 ± 0.5 mm/yr in vertical and east–west components. However, the land surface toward the northeast of the city is relatively subsiding with a higher annual rate of up to −6 ± 0.46 mm/yr. The comparison at sparse locations shows a close agreement between the subsidence rates obtained from precise leveling and PSI results. The regional quaternary deposits map was overlaid with PSI results and it shows the subsidence areas are mostly located in zones where the subsurface layer is marked by artificial fill materials. The knowledge of the spatio-temporal extents of land surface subsidence for undergoing urban areas can help to develop and establish models to mitigate hazards associated with such land settlement.

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