Mechanism of rock burst induced by fault slip in an island coal panel and hazard assessment using seismic tomography: a case study from Xuzhuang colliery, Xuzhou, China

2017 ◽  
Vol 21 (3) ◽  
pp. 469-481 ◽  
Author(s):  
Changbin Wang ◽  
Anye Cao ◽  
Guangan Zhu ◽  
Guangcheng Jing ◽  
Jing Li ◽  
...  
Keyword(s):  
Rock Burst ◽  
Hazard Assessment ◽  
Seismic Tomography ◽  
Fault Slip

scholarly journals Rockburst hazard assessment based on seismic tomography and analytical modelling - a case study

2018 ◽  
Vol 66 ◽  
pp. 01009
Author(s):  
Dariusz Chlebowski ◽  
Zbigniew Burtan
Keyword(s):  
Hazard Assessment ◽  
Seismic Tomography ◽  
Vertical Component ◽  
Rockburst Hazard ◽  
Expert Opinions ◽  
Deformable Media ◽  
Coal Deposits ◽  
Threat Level ◽  
Survey Results

In accordance with the formal regulations currently in force in Poland, the criteria for rockburst hazard assessment with respect to coal deposits include the records of seismic events and their impacts, de-stressing of the entire seam or its parts and expert opinions of mine operation engineers. Effectiveness of the de-stressing can be verified by geophysical test data whilst the expert opinions are mostly based on mathematical modelling using specialist software or dedicated simulation algorithms. This study collates and synthesises the results of tests carried out in a seam section in a colliery within the Upper Silesia Coal Basin, obtained by the outlined methods. Geophysical survey results are interpreted basing on seismic tomography procedures utilising the geo-tomography techniques for velocity field reconstruction in data processing. For comparison, the stress state modelling data are provided, based on conventional engineering solutions applicable to mechanics of deformable media. The actual assessment of the rockburst threat level is based on observations of distributions of the longitudinal wave velocity in relation to the actual value of the vertical component of stress concentration within the coal seam.

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

2021 ◽  
Author(s):  
A. B. Gogolewska ◽  
D. Smolak
Keyword(s):  
Rock Burst ◽  
Seismic Tomography ◽  
Seismic Activity ◽  
Preventive Measure ◽  
Seismic Energy ◽  
Energy Reduction ◽  
Copper Ore ◽  
Mining Conditions ◽  
Passive Seismic

AbstractDeep 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.

Building Domain-Specific Environments for Computational Science: a Case Study in Seismic Tomography

1997 ◽  
Vol 11 (3) ◽  
pp. 179-196 ◽  
Author(s):  
Janice E. Cuny ◽  
Robert A. Dunn ◽  
Steven T. Hackstadt ◽  
Christopher W. Harrop ◽  
Harold H. Hersey ◽  
...  
Keyword(s):  
Seismic Tomography ◽  
Computational Science ◽  
Domain Specific

A methodology for resiliency assessment of existing bridges – a study on a bridge from 1930

2021 ◽  
Author(s):  
Guy L. Larose ◽  
Pierre-Olivier Dallaire ◽  
Theresa Erskine ◽  
Chiara Pozzuoli ◽  
Emanuele Mattiello
Keyword(s):  
Hazard Assessment ◽  
Health Monitoring ◽  
Ad Hoc ◽  
Rehabilitation Program ◽  
Wind Loading ◽  
Close Collaboration ◽  
Current State ◽  
Design Life ◽  
Existing Bridges

<p>This paper introduces the methodology RWDI has developed, tested and consolidated over the years working in close collaboration with bridge designers, owners and operators, for the multi-hazard assessment of existing bridges and the ad hoc development of a structural health monitoring programme leading to enhanced resiliency. The work is highlighted through the presentation of a case study for a 2,725 m long cantilever bridge built in 1930. The dynamics of the structure in its current state were characterised and its capacity to today and future wind loading was assessed fully following the proposed methodology prior to the initiation of a structural rehabilitation program to extend the design life of the bridge beyond its 150th anniversary.</p>

Rock Backfill and Hazard Control of Abandoned Stopes: A Case Study

2013 ◽  
Vol 368-370 ◽  
pp. 1726-1731
Author(s):  
Yi Ming Wang ◽  
Ming Qing Huang ◽  
Ai Xiang Wu ◽  
Gao Hui Yao ◽  
Kai Jian Hu
Keyword(s):  
Rock Burst ◽  
Surface Subsidence ◽  
Waste Rock ◽  
Underground Mines ◽  
Control Potential ◽  
Land Usage ◽  
Hazard Control ◽  
Rock Movement ◽  
Adjacent Rock

Goafs formed in mine-out areas threat the underground mines owing to possibilities of rock burst and surface subsidence. This paper aims to discuss the feasibility, design and construction of waste rock backfill in abandoned stopes. Based on goafs distribution and stabilities in the White Bull Mine, rock backfill system with a total volume of 362,000 m3in 8 gobs was designed and carried out. The system included technologically and economically feasible stopes, conveying equipments of tramcars, rock transfer by electric rakes, haulage network and mining workings. Field effects showed that rock backfill was applicable to control potential hazards. With rock filling, goaf utilization rates ranged from 60% to 70%, which helped to control adjacent rock movement, eliminate rock burst and surface subsidence. Additionally, backfill construction reduced the lift and transportation costs of rocks by about 50%, which further lowered the land usage of surface dumping.

The role of data source selection in chemical hazard assessment: A case study on organic photovoltaics

2019 ◽  
Vol 365 ◽  
pp. 227-236 ◽  
Author(s):  
Haoyang He ◽  
Yadira Gutierrez ◽  
Thomas M. Young ◽  
Julie M. Schoenung
Keyword(s):  
Hazard Assessment ◽  
Organic Photovoltaics ◽  
Source Selection ◽  
Chemical Hazard ◽  
Data Source
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