Review on Rockburst Theory and Types of Rock Support in Rockburst Prone Mines

Kabwe, Eugie; Wang, Yiming

doi:10.4236/ojsst.2015.54013

Cited by 25 publications

(9 citation statements)

References 11 publications

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“…However, measurements of forces within these types of foundations during dynamic loading as well as the distribution into the soil are still missing. Although there is an increasing amount of studies on energy-absorbing rockbolts (Li et al 2014;Kabwe and Wang 2015) that focus on dynamic solicitations, only a few studies are reported on conventional frictional anchors. Many studies performed until now have been conducted in the laboratory (Ansell 2005;Li and Doucet 2012) or analysed with numerical methods (Mortazavi and Alavi 2013;Zhao et al 2015;St-Pierre et al 2009;Ivandić and Verić 2003) as in situ experiments with dynamic loadings are cost expensive and present restrictions.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of forces along anchors subjected to dynamic loading under tension and compression in field tests

et al. 2020

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Full-scale field tests of dynamic rockfall have been performed on a flexible SPIDER Avalanche system to study the dynamic force distribution along the foundations under dynamic loading. Therefore, an anchor to measure dynamic tensile forces and a pile to measure dynamic compressive forces were each equipped with strain gauges. Furthermore, a static pull loading test with load steps of 1 min duration was performed on the anchor to highlight the difference between dynamic and static loading. Effective kinetic energies applied on the net of the SPIDER Avalanche system range from 25 to 492 kJ with impact velocities between 17 and 25 m/s. The results show that the dynamic forces close to the pile- and anchor head are higher and that they are decreasing with increasing distance of pile and anchor. However, the dynamic tensile force distribution is nonlinear over the length of the anchor, whereas the dynamic compressive force distribution is linear along the pile length. The comparison of static and dynamic tensile forces shows that dynamic tensile forces are depleted within a shorter distance of the anchor compared to the static tensile forces. Dynamic tensile forces present 25% less in value than the static tensile forces.

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Section: Introductionmentioning

confidence: 99%

Experimental investigation of forces along anchors subjected to dynamic loading under tension and compression in field tests

et al. 2020

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“…Rockburst are seismic events triggered by deep deposits exploitation in which the rocks fail abruptly and brittlely with high degree of damage after getting strained above their ultimate elasticity. According to Larsson (2004), Kabwe and Wang (2015), a rockburst is the exploitation induced seismic event that affects and cause destruction to excavations in the rock. Vennes and Mitri (2017) defined rock bursts as seismic events where the rock suddenly and violently fails in a brittle way after being strained beyond its elastic limit.…”

Section: Meaning and Main Causes Of Rockburstmentioning

confidence: 99%

A Review on Rockburst as a Serious Safety Problem in Deep Underground Mines and other Excavation Projects

Murwanashyaka¹,

Li²

2019

IJERT

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The previous research has found that, rockburst is a ground stress related problem which is likely to occur in deep underground mines or other excavation projects as the mining or excavation depth increase significantly. From this point of view, in order to initiate a research in deep underground engineering, the Authors have reviewed rockburst as a serious safety problem in deep underground mines and other excavations around the world. As the main objectives of this paper, the review was conducted for a thorough understanding of rockburst problem to arouse the Authors' great deal of interest to go through a detailed research on rockburst and other dynamic disasters in deep underground engineering. In such circumstance, the meaning and main causes, status, characteristics, different classification, and the main negative effects of rockburst and its control methods were discussed to achieve the objectives of this paper.

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“…Rockburst is the common energy release of elastic deformation with sudden, uncontrollable and destructive damage in deep mining and underground space development, which is manifested as the fracture and instantaneous projection of surrounding rock mass [1–3]. Strong rockbursts may cause significant losses to underground engineering, such as the failure of the supporting mechanism and equipment, casualty and construction delay [4,5]. Therefore, it is significant to predict and alarm the rockburst in underground engineering [6,7].…”

Section: Introductionmentioning

confidence: 99%

A prediction model on rockburst intensity grade based on variable weight and matter-element extension

Chen

Shan

et al. 2019

PLoS ONE

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Rockburst is a common dynamic disaster in deep underground engineering. To accurately predict rockburst intensity grade, this study proposes a novel rockburst prediction model based on variable weight and matter-element extension theory. In the proposed model, variable weight theory is used to optimize the weights of prediction indexes. Matter-element extension theory and grade variable method are used to calculate the grade variable interval corresponding to the classification standard of rockburst intensity grade. The rockburst intensity grade of Engineering Rock Mass is predicted by rock burst intensity level variable and the interval. Finally, the model is tested by predicting the rockburst intensity grades of worldwide several projects. The prediction results are compared with the actual rockburst intensity grades and the prediction results of other models. The results indicate that, after using variable weight theory and grade variable method, the correct rate of prediction results of matter-element extension model is improved, and the safety of the prediction results is also enhanced. This study provides a new way to predict rock burst in underground engineering.

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Review on Rockburst Theory and Types of Rock Support in Rockburst Prone Mines

Cited by 25 publications

References 11 publications

Experimental investigation of forces along anchors subjected to dynamic loading under tension and compression in field tests

Experimental investigation of forces along anchors subjected to dynamic loading under tension and compression in field tests

A Review on Rockburst as a Serious Safety Problem in Deep Underground Mines and other Excavation Projects

A prediction model on rockburst intensity grade based on variable weight and matter-element extension

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