Case study of seismic hazard assessment in underground coal mining using passive tomography

Cao, Anye; Li, Dou; Cai, Wu; Gong, Siyuan; Liu, Sai; Jing, Guangcheng

doi:10.1016/j.ijrmms.2015.05.001

Cited by 98 publications

(41 citation statements)

References 22 publications

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“…These techniques have been used extensively and successfully in the Earth Sciences to map characteristics of the Earth at great depths, for example, the identification of the Mohorovicic Discontinuity (Moho); see Rawlinson et al (2010) for a description of the history of tomographic techniques. To a lesser extent, these techniques have been applied in the mining environment, which is at a much smaller scale, where correlations between velocities and i) geomechanical characteristics of the rock mass (Cai et al 2014;Hemmati Nourani et al 2017;Watanabe and Sassa 1996), and ii) stress anomalies (Cao et al 2015;Friedel et al 1995Friedel et al , 1997He et al 2011;Hosseini et al 2013;Krauß et al 2014;Luxbacher et al 2008;Ma et al 2016;Young and Maxwell 1992) are evaluated. Much of this work was conducted in soft rock environments (coal mines).…”

Section: Introductionmentioning

confidence: 99%

Rock Mass Characteristics and Tomographic Data

Vatcher¹,

McKinnon

Sjöberg³

2018

Rock Mech Rock Eng

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Section: Introductionmentioning

confidence: 99%

Rock Mass Characteristics and Tomographic Data

Vatcher¹,

McKinnon

Sjöberg³

2018

Rock Mech Rock Eng

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“…During the rock burst, there is a huge release of elastic strain energy which can result in serious threats to the safety of coal mine production [1][2][3]. With the increase of the coal mining depth, the occurrence frequency of rock burst also increases in China [4][5][6][7][8][9][10]. Among the different kinds of rock burst, sloughing rock burst is the most common one, which usually results from the local instability of a mine roadway [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Dynamics Mechanism of Rock Burst Induced by the Instability of the Layer-Crack Plate Structure in the Coal Wall in Deep Coal Mining

Chen

Mao

et al. 2017

Shock and Vibration

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The instability of layer-crack plate structure in coal wall is one of the causes of rock burst. In the present paper, we investigate the formation and instability processes of layer-crack plate structure in coal wall by experiments and theoretical analysis. The results reveal that layer-crack plate structure formed near the free surface of the coal wall during the loading. During the formation of the layer-crack plate structure, the lateral displacement curve of the coal wall experiences a jagged variation, which suggests the nonlinear instability failure of the coal wall with a sudden release of the elastic energy. Then, a dynamic model for the stability analysis of the layer-crack plate structure was proposed, which takes consideration of the dynamic disturbance factor. Based on the dynamic model, the criterion for dynamic instability of the layer-crack plate structure was determined and demonstrated by an example. According to the analytical results, some control methods of dynamic stability of the layer-crack plate structure was put forward.

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“…In mines this parameter has mainly been determined by seismic profiling [7,8] or active and passive seismic tomography [9][10][11]. Recently, seismic interferometry has also been used for imaging [12,13] and monitoring of the rock mass influenced by mining [14,15].…”

Section: Introductionmentioning

confidence: 99%

Comparison of an empirical S-wave velocity model and a calculated stress-strain model for a rock mass disturbed by mining

Krawiec

Czarny

2017

E3S Web of Conferences

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Abstract. In the article a comparison analysis is presented between a numerical model of the stress and deformation state in a rock mass and an S-wave velocity model obtained as a result of in situ measurement. The research was conducted using data from the Jastrzębie and Moszczenica coal mines. The part of the rock mass examined was strongly disturbed by multi-seam exploitation of coal. To obtain the S-wave velocity model 6 hours of ambient seismic noise data were recorded using 11 seismometers. The propagation of the Rayleigh surface wave between the seismometers was reconstructed utilising the seismic interferometry and the cross correlation technique. Estimation of a two dimensional model of the Swave velocity field was performed on the basis of dispersion curves of the Rayleigh wave phase velocity. The stress and deformation field were calculated assuming a plane state of stress with the use of the elastic-plastic Coulomb-Mohr strength criterion. Images of the vertical stress, horizontal stress, vertical strain and horizontal strain as well as the subsidence profile on the model surface were obtained as a result of the calculation. Analysis of the results shows correlation between the field of S-wave velocity and the modelled field of stress and strain.

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Case study of seismic hazard assessment in underground coal mining using passive tomography

Cited by 98 publications

References 22 publications

Rock Mass Characteristics and Tomographic Data

Rock Mass Characteristics and Tomographic Data

Nonlinear Dynamics Mechanism of Rock Burst Induced by the Instability of the Layer-Crack Plate Structure in the Coal Wall in Deep Coal Mining

Comparison of an empirical S-wave velocity model and a calculated stress-strain model for a rock mass disturbed by mining

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