Ground support design for dynamic loading conditions: A quantitative data-driven approach based on rockburst case studies

Morissette, Philippe; Hadjigeorgiou, John

doi:10.1016/j.jrmge.2019.03.002

Cited by 14 publications

(6 citation statements)

References 5 publications

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“…Steel mesh is easily damaged by the impact of blasting and cleaning operations, so it is difficult to design a stronger and permanent regional support system with large coverage, while it will also lead to the failure of regional support and single yield support to form an integrated system. Malan et al deemed that a possible solution is the use of reef boring techniques, where the reef is drilled out by boring machines from predeveloped access drives while removing miners from the hazardous stope faces [193].…”

Section: Rockburst Prevention and Controlmentioning

confidence: 99%

“…Morissette et al used the seismic events and rockburst events of three deep mines in the Sudbury basin of Canada to establish a comprehensive database and proposed a database-based support design strategy to determine the mine location for enhanced support, the time for dynamic support installation and selection of the appropriate surrounding rock support system [193].…”

Section: Rockburst Prevention and Controlmentioning

confidence: 99%

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Development of Rockburst Research: A Comprehensive Review

Wang

et al. 2022

Applied Sciences

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Rockburst is a difficult problem in underground resource development and infrastructure construction. With scientific and technological progress, more research technologies and methods to prevent rockburst have been proposed and applied. Research content has become more comprehensive, and positive progress and achievements have been made. However, due to the complexity of rockburst control factors and the sudden occurrence of rockburst, the occurrence mechanism and accurate prediction of occurrence intensity and time are still difficult worldwide problems. In this paper, the research development and achievements of rockburst are reviewed. Firstly, various definitions and types of rockburst are briefly summarized. Then, research progress and achievements in four aspects are comprehensively reviewed, including methods and techniques of rockburst research (theoretical research, numerical simulation, physical model tests and in situ monitoring), mechanism of rockburst, classification and prediction of rockburst (empirical criteria, in situ monitoring, mathematical model approaches and rockburst chart) and prevention and control of rockburst. Of particular significance is that the classification and prediction with prevention and control are summarized in detail. Finally, limitations, deficiencies and some promising directions for future research are listed.

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Section: Rockburst Prevention and Controlmentioning

confidence: 99%

Section: Rockburst Prevention and Controlmentioning

confidence: 99%

Development of Rockburst Research: A Comprehensive Review

Wang

et al. 2022

Applied Sciences

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“…Long-term measurements include understanding the changes in the mine to adapt the exploitation methods and improve mine design (Heal, 2010) for reducing the hazard due to rockbursting. Some short-term measurements include the installation of ground support systems to reinforce the structures absorbing the kinetic energy released (Morissette and Hadjigeorgiou, 2019) or the use of remotely operated equipment. For all approaches, it is vital to understand the seismicity of the mine; therefore, microseismic monitoring is the main method for underground mining hazard.…”

Section: Rockbursts Hazardmentioning

confidence: 99%

Microseismic monitoring of rockbursts with the ensemble Kalman filter

Dip

Giroux

Gloaguen

2021

Near Surface Geophysics

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We introduce an algorithm to monitor seismic velocity changes associated with rockbursts in mines, through microseismic monitoring. Rockbursts are extreme events resulting from the complex interaction between mining activities and geology, and represent a significant threat to mines. In recent years, the use of passive seismic monitoring for mine safety and productivity has progressed substantially, aiming to understand and predict this hazard. In this work, additional value is given to microseismic monitoring, using it to map temporal changes of seismic velocity in the rock mass that can potentially be associated with stress changes leading to rockbursts. An application of the ensemble Kalman filter is presented for assimilating travel times of seismic P and S waves in a fast and efficient way in order to update the mine's velocity model. Combining sequential Gaussian simulation and ensemble Kalman filter techniques, we were able to monitor the occurrence of velocity changes underground. The proposed approach allows zones to be highlighted where the rock mass is under stress and where potential risk can be expected. The performance of the method was first tested on several synthetic scenarios and, subsequently, on a real 3D case of a deep mine in Canada. The application on the real data set allowed mapping a change in velocity in the area where a rockburst occurred four hours afterwards.

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“…Thus, a number of scholars conducted drop tests and simulated rockburst experiments using blasting tests to focus on the support performance of integrated support systems (Ortlepp and Stacey 1998;Stacey and Ortlepp 2001;Potvin 2007, 2011;Heal 2010;Bucher et al 2013;Brändle et al 2017). The support capacities of various ground support systems are also evaluated and rated in burst-prone mines to provide empirical guidance in ground support selection (Heal et al 2006;Potvin 2009;Mikula 2012;Duan et al 2015a;NGI 2015;Morissette and Hadjigeorgiou 2019).…”

Section: Introductionmentioning

confidence: 99%

A review of investigations on ground support requirements in coal burst-prone mines

Wei

Zhang

Canbulat

et al. 2022

Int J Coal Sci Technol

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Ground support is widely implemented to mitigate dynamic rock failures in underground mines. This paper investigated the ground support requirements in burst-prone mines to mitigate the catastrophic dynamic rock failures of rock and/or coal bursts. First, the ground support principles and considerations in burst-prone conditions are identified. The objective of a ground support system is to increase the capacity to accommodate rock fracturing in a rockburst and, in turn, to minimize the kinetic energy of the ejected material. The support capacities of various yielding rockbolts and integrated support systems are then investigated using the test results in the laboratory. Apart from the energy absorption and yielding deformation capacity, the initial stiffness and energy absorption rate are also critical factors when applying yielding rockbolts in practice. Adding rope lacing and mesh strap to surface support elements can substantially enhance the support performance of the system. In practice, semi-analytical and empirical approaches are often used to determine the ground support elements in burst-prone areas. Semi-analytical methods first evaluate the support demand in burst risk zones and then select support elements according to their laboratory test results. Alternatively, empirical methods determine the ground support elements according to the locally established empirical rating scheme, which usually ranks the support capacities of various support systems based on ground support conditions and damage conditions. The outcomes of this study can provide insights into ground support strategies and assist the mining industry to develop effective coal burst control technologies.

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Ground support design for dynamic loading conditions: A quantitative data-driven approach based on rockburst case studies

Cited by 14 publications

References 5 publications

Development of Rockburst Research: A Comprehensive Review

Development of Rockburst Research: A Comprehensive Review

Microseismic monitoring of rockbursts with the ensemble Kalman filter

A review of investigations on ground support requirements in coal burst-prone mines

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