Initiation of Tectonic Earthquakes Caused by Surface Mining

Kocharyan, G. G.; Кишкина, С. Б.

doi:10.1134/s1062739118054844

Cited by 6 publications

(3 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Kundu et al ( 2015 ) show that anthropogenic processes related to groundwater extraction can lead to stress perturbations by crustal unloading, that might have triggered the 2015 Mw 7.8 Gorkha, Nepal, earthquake. The influence of surface mining by investigating seismic events near open pits is discussed by Kocharyan and Kishkina ( 2018 ).…”

Section: Seismic Sourcesmentioning

confidence: 99%

Natural and Anthropogenic Sources of Seismic, Hydroacoustic, and Infrasonic Waves: Waveforms and Spectral Characteristics (and Their Applicability for Sensor Calibration)

et al. 2022

View full text Add to dashboard Cite

The record of seismic, hydroacoustic, and infrasonic waves is essential to detect, identify, and localize sources of both natural and anthropogenic origin. To guarantee traceability and inter-station comparability, as well as an estimation of the measurement uncertainties leading to a better monitoring of natural disasters and environmental aspects, suitable measurement standards and reliable calibration procedures of sensors, especially in the low-frequency range down to 0.01 Hz, are required. Most of all with regard to the design goal of the Comprehensive Nuclear-Test-Ban Treaty Organisation’s International Monitoring System, which requires the stations to be operational nearly 100% of the time, the on-site calibration during operation is of special importance. The purpose of this paper is to identify suitable excitation sources and elaborate necessary requirements for on-site calibrations. We give an extensive literature review of a large variety of anthropogenic and natural sources of seismic, hydroacoustic, and infrasonic waves, describe their most prominent features regarding signal and spectral characteristics, explicitly highlight some source examples, and evaluate the reviewed sources with respect to requirements for on-site calibrations such as frequency bandwidth, signal properties as well as the applicability in terms of cost–benefit. According to our assessment, earthquakes stand out across all three waveform technologies as a good natural excitation signal meeting the majority of the requirements. Furthermore, microseisms and microbaroms allow a calibration at very low frequencies. We also find that in each waveform technique man-made controlled sources such as drop weights or air guns are in good agreement with the required properties, although limitations may arise regarding the practicability. Using these sources, procedures will be established allowing calibration without record interrupting, thereby improving data quality and the identification of treaty-related events.

show abstract

Section: Seismic Sourcesmentioning

confidence: 99%

Natural and Anthropogenic Sources of Seismic, Hydroacoustic, and Infrasonic Waves: Waveforms and Spectral Characteristics (and Their Applicability for Sensor Calibration)

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Open (surface) mining operations in most cases only bring the moment of the earthquake closer, while underground developing of deposits changes effective elastic moduli of the rock massif in the vicinity of an active fault [116]. Therefore, it seems probable that without the anthropogenic effect the cumulated deformation energy would have released not through a dynamic movement (earthquake), but in another way, e.g., through slow creep or a series of slow slip events.…”

Section: Excavation and Displacement Of Rock In Miningmentioning

confidence: 99%

Fault Sliding Modes—Governing, Evolution and Transformation

Kocharyan

Остапчук

Павлов

2020

Springer Tracts in Mechanical Engineering

View full text Add to dashboard Cite

A brief summary of fundamental results obtained in the IDG RAS on the mechanics of sliding along faults and fractures is presented. Conditions of emergence of different sliding regimes, and regularities of their evolution were investigated in the laboratory, as well as in numerical and field experiments. All possible sliding regimes were realized in the laboratory, from creep to dynamic failure. Experiments on triggering the contact zone have demonstrated that even a weak external disturbance can cause failure of a “prepared” contact. It was experimentally proven that even small variations of the percentage of materials exhibiting velocity strengthening and velocity weakening in the fault principal slip zone may result in a significant variation of the share of seismic energy radiated during a fault slip event. The obtained results lead to the conclusion that the radiation efficiency of an earthquake and the fault slip mode are governed by the ratio of two parameters—the rate of decrease of resistance to shear along the fault and the shear stiffness of the enclosing massif. The ideas developed were used to determine the principal possibility to artificially transform the slidding regime of a section of a fault into a slow deformation mode with a low share of seismic wave radiation.

show abstract

“…Subject to certain conditions, such unbalance can be accompanied with aseismic relaxation of stresses, or can result in disastrous phenomena induced by lithostatic pressure, such as seismic activity, rock bumps and rock bursts [7][8][9]. Some mining-induced dynamic pressure phenomena are described in [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Mathematical model and numerical calculations of disastrous pressure phenomena in rock mass with weakening cavity

Лавриков

2021

E3S Web Conf.

View full text Add to dashboard Cite

The study focuses on deformation and stability of structurally nonuniform rock masses in the vicinity of a mined-out void. Rock masses can for a long time accumulate energy of external forces as internal stresses. The accumulated energy can release both as aseismic relaxation of stresses and as rock bumps and rock bursts. The numerical analysis uses the rock mass model including self-balancing stresses and strength loss. The paper gives examples of calculations of standard problems in mining and illustrates feasibility of modeling disastrous pressure phenomena.

show abstract

Initiation of Tectonic Earthquakes Caused by Surface Mining

Cited by 6 publications

References 7 publications

Natural and Anthropogenic Sources of Seismic, Hydroacoustic, and Infrasonic Waves: Waveforms and Spectral Characteristics (and Their Applicability for Sensor Calibration)

Natural and Anthropogenic Sources of Seismic, Hydroacoustic, and Infrasonic Waves: Waveforms and Spectral Characteristics (and Their Applicability for Sensor Calibration)

Fault Sliding Modes—Governing, Evolution and Transformation

Mathematical model and numerical calculations of disastrous pressure phenomena in rock mass with weakening cavity

Contact Info

Product

Resources

About