3D S-wave velocity imaging of a subsurface disturbed by mining using ambient seismic noise

Czarny, Rafał; Pilecki, Z.; Nakata, Nori; Pilecka, Elżbieta; Krawiec, Krzysztof; Harba, Paulina; Barnaś, Maciej

doi:10.1016/j.enggeo.2019.01.017

Cited by 20 publications

(11 citation statements)

References 37 publications

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“…The inclination of the main faults is from 30 • to 90 • . Among these fault systems the most significant ones are the "Main Rudna" fault, "Biedrzychowa" fault, and "Main Lubin" fault ( Figure 3A,B; [15,[17][18][19][20][21]).…”

Section: Research Areamentioning

confidence: 99%

An Analysis Applying InSAR of Subsidence Caused by Nearby Mining-Induced Earthquakes

et al. 2019

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Earthquake occurrence is usually unpredictable apart from sites in the vicinity of volcanoes. It is not easy to measure displacements caused by seismic phenomena using classical geodetic methods, which are based on point survey. Therefore, the surveying of ground movements caused by seismic events should be carried out continuously. Nowadays, remote sensing data and InSAR are often applied to monitor ground displacements in areas affected by seismicity. The effects of severe nearby mining-induced earthquakes have been discussed in the paper. The earthquakes occurred in 2017 and had a magnitude of 4.7 and 4.8. The distance between the epicenters of the mining-induced earthquakes was around 1.6 km. The aim of the investigation has been to analyze the spatio-temporal distribution of ground movements caused by the two tremors using the InSAR technique. Superposition of surface displacement has been studied in time and space. The main scientific aim has been to prove that in the areas where high-energy tremors occur, ground movements overlap. Due to proximity between the epicenters, the mining-induced earthquakes caused the formation of a large subsidence trough with the dimension of approximately 1.2 km × 4.2 km and total subsidence of ca. 116 mm. Two-time phases of subsidence were determined with temporal overlapping. The subsidence analysis has enhanced the cognition of the impact of mining-induced seismicity on the kinematics of surface changes. Moreover, the present work supports the thesis that InSAR is a valuable and adequately accurate technique to monitor ground displacements caused by mining induced earthquakes.

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Section: Research Areamentioning

confidence: 99%

An Analysis Applying InSAR of Subsidence Caused by Nearby Mining-Induced Earthquakes

et al. 2019

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“…The results of passive tomography are distributions mostly of the P-wave velocity; when the stress increases, the velocity increases Young 1999, 2002;Dubinski and Mutke 2005;Czarny et al 2019). Equally dangerous is the situation in which there is an increase in rock damage, which is manifested by a velocity decrease, often to values smaller than those recorded before.…”

Section: Introductionmentioning

confidence: 98%

“…1). Since then a lot of research methods have been employed to recognise, reduce and monitor the seismic and rock burst hazard (Dubinski et al 2001;Mutke et al 2001;Kijewski 2006;Butra 2010;Czarny et al 2019). Therefore, forecasting the areas where they occur plays an important role in work safety maintenance.…”

Section: Introductionmentioning

confidence: 99%

Seismic activity reduction with the use of blasting and passive seismic tomography control, a case study from copper ore mine, Poland

Gogolewska

Smolak

2021

Acta Geophys.

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Deep copper ore mines in Poland have been struggling with seismic hazard since almost fifty years ago when the first rock burst occurred. Increasing exploitation depth and mined-out space make the mining conditions constrained and severe causing the seismic activity to grow substantially. Consequently, rock burst preventive activities have to be incorporated into mining technology to provide work safety. To date, the group winning blasting has posed the most commonly used preventive measure, so its efficiency in seismic energy reduction is of significant importance for the rock burst hazard mitigation. The more energy blasting works provoke to release the safer the work environment gets. The article aimed to assess the efficiency of such an energy reduction, which was approached in two ways. Firstly, the drop of energy and in turn its reduction efficiency was assessed simply using a percentage of provoked tremors’ energy and number. Next, the analysis employed passive seismic tomography results to find if provoked tremors took place in high-velocity zones. The analysis made it possible to verify the assumption that the more provoked energy occurs in such zones the more successful preventive blasting is.

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“…Body waves, in comparison with surface waves, have broader applications in geoengineering (Szreder et al 2008;Pilecki 2008;Pilecki et al 2017); however, methods based on surface waves such as MASW and SI quickly develop improving range and resolution of investigation (Kanli et al 2006(Kanli et al , 2008Chmiel et al 2019). The use of low-frequency noise below 0.4 Hz allows to image geological subsurface up to approximately 400-500 m (Czarny et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Comparison of MASW and seismic interferometry with use of ambient noise for estimation of S-wave velocity field in landslide subsurface

2019

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This study presents a comparison of data acquisition, processing and interpretation between passive seismic interferometry (SI) and active multichannel analysis of surface waves (MASW) methods, both using surface waves for estimation S-wave velocity field. Measurements have been taken in the same geological engineering conditions on Just-Tegoborze landslide on the south of Poland. This comparison study has an important meaning from landslide hazard evaluation point of view. The landslide is located in Magura Nappe in Outer (Flysch) Carpathians. SI was based on registration of local seismic noise generated by high traffic on the state road which intersects the landslide. The main processing step was cross-correlation of seismic noise between every pair of receivers. It led to obtain series of empirical Green's functions for Rayleigh surface wave. However, in MASW method, seismic energy was released by an impact of 5 kg sledgehammer in a metal plate. Both methods included analysis of dispersion curves of Rayleigh surface wave. The inversion of picked fundamental modes was applied using genetic algorithm and resulted in 1D S-wave velocity models. The last step of interpretation included model visualization as the 2D S-wave velocity sections for studied profiles. Both MASW and SI methods allowed to estimate S-wave velocity field in Just-Tegoborze landslide subsurface. Dispersion images obtained from both methods provided similar phase velocity and frequency ranges. On S-wave velocity sections, the greater depth range was observed for SI method; however, lateral resolution was better for MASW. Slip surfaces in colluvial layer were not observed on either SI or MASW S-wave velocity sections. Only results obtained from SI allowed to distinguish probable slip surface located deeper, i.e. on the contact with less weathered flysch bedrock.

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3D S-wave velocity imaging of a subsurface disturbed by mining using ambient seismic noise

Cited by 20 publications

References 37 publications

An Analysis Applying InSAR of Subsidence Caused by Nearby Mining-Induced Earthquakes

An Analysis Applying InSAR of Subsidence Caused by Nearby Mining-Induced Earthquakes

Seismic activity reduction with the use of blasting and passive seismic tomography control, a case study from copper ore mine, Poland

Comparison of MASW and seismic interferometry with use of ambient noise for estimation of S-wave velocity field in landslide subsurface

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