Geomechanical evaluation of roof-and-pillar parameters in transition to underground mining

Макаров, А. Б.; Rasskazov, I. Yu.; Саксин, Б. Г.; Livinsky, I. S.; Potapchuk, M. I.

doi:10.1134/s1062739116030633

Cited by 5 publications

(2 citation statements)

References 1 publication

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“…In OP to UG transition, the challenge of deformation, displacement, and rock formation stability need to be meticulously investigated. These will ensure their effect on production, worker and equipment safety, and the working environment of the UG operation are highly secured [64]. When the crown pillar thickness is large, considerable quantity of mineral deposit is lost but when the pillar is undersized and thin, the probability of pillar failure and instability of the mine is eminent [65].…”

Section: Crown Pillar and Rock Strength Considerations In Mining Options And Transitions Planningmentioning

confidence: 99%

A Review of Models and Algorithms for Surface-Underground Mining Options and Transitions Optimization: Some Lessons Learnt and the Way Forward

Afum

Ben-Awuah

2021

Mining

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It is important that the strategic mine plan makes optimum use of available resources and provides continuous quality ore to drive sustainable mining and profitability. This requires the development of a well-integrated strategy of mining options for surface and/or underground mining and their interactions. Understanding the current tools and methodologies used in the mining industry for surface and underground mining options and transitions planning are essential to dealing with complex and deep-seated deposits that are amenable to both open pit and underground mining. In this study, extensive literature review and a gap analysis matrix are used to identify the limitations and opportunities for further research in surface-underground mining options and transitions optimization for comprehensive resource development planning.

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Section: Crown Pillar and Rock Strength Considerations In Mining Options And Transitions Planningmentioning

confidence: 99%

A Review of Models and Algorithms for Surface-Underground Mining Options and Transitions Optimization: Some Lessons Learnt and the Way Forward

Afum

Ben-Awuah

2021

Mining

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“…The room-and-pillar method is traditionally widely used in the mining practice worldwide [1][2][3][4]. In this method, the overlying rock mass support is ensured by rib pillars within the project-specified period of time.…”

Section: Introductionmentioning

confidence: 99%

Operational control of rib pillar stability

Baryah¹,

Evseev²,

Lomakin³

et al. 2020

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In room-and-pillar mineral mining, rib pillars should support overlying rock mass for the specified time limit of production. Therefore, one of the mining safety components is monitoring of the behavior of rib pillars in the course of time. For the conditions of the room-andpillar method of mining, the authors propose a monitoring procedure for rib pillar deformation based on operational measurements of horizontal convergence in stopes. The theoretical and experimental research proves that transverse deformation of rib pillars is an informative parameter suitable for generalized assessment of pillar failure. The obtained ranges of critical transverse deformation rates (50–100 mm/m/yr) in rib pillars can tentatively be used as an indicator of the critical stability of load-bearing structures in room-and-pillar mining. In-situ determination of the integral transverse deformation rates in rib pillars is based on the ratio of the measured horizontal convergence in stopes to the width of pillars. Implementation of the proposed approach in the Upper Kama potash salt mines has proved its applicability to identification of rock mass areas where intense deformation is expected. The comparison of the monitoring data of the transverse deformation rates and their critical values determined makes it possible to predict service life of rib pillars, which is very important in terms of safety of mining operations. This study was supported by the Russian Science Foundation, Grant No. 19-77-30008.

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Validation of variants and structural parameters for mining systems for thin ore bodies

Shchukin

Конурин

Неверов

2020

IOP Conf. Ser.: Earth Environ. Sci.

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The current mining of thin and steeply dipping ore bodies features depth down to 700–1100 m below ground surface, increased dimension of various-purpose pillars and, as consequence, higher mineral loss and overall degradation of mining efficiency. In connection with this, it is urgent to find new mining systems as well as scientific approaches to validation of safe parameters of geotechnologies such that, depending on geological and geomechanical conditions, as well as on mineral value, minimize geotechnical risks and maintain competitiveness of production. The aim of this study is to determine safe parameters of open stoping technology for thin ore bodies in terms of the Irtysh complex ore mine. The key research methods are production planning and mathematical (numerical) stress–strain analysis and stability of structural elements in underground mines. The calculated parameters of pillars and stopes for open stoping ensure operating stoping in areas of steeply dipping or inclined ore bodies. Application of 3D mathematical modeling to geological and geomechanical conditions of an operating mine greatly expands the range of approaches and knowledge in complicated problem solving, which proves reliability and correctness of the results obtained for specific nonrecurring geotechnical situations.

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Geomechanical evaluation of roof-and-pillar parameters in transition to underground mining

Cited by 5 publications

References 1 publication

A Review of Models and Algorithms for Surface-Underground Mining Options and Transitions Optimization: Some Lessons Learnt and the Way Forward

A Review of Models and Algorithms for Surface-Underground Mining Options and Transitions Optimization: Some Lessons Learnt and the Way Forward

Operational control of rib pillar stability

Validation of variants and structural parameters for mining systems for thin ore bodies

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