Forecasting Rock Burst Hazard of Tectonically Disturbed Ore Massif at the Deep Horizons of Nikolaevskoe Polymetallic Deposit

Sidorov, D. V.; Potapchuk, M. I.; Sidliar, Aleksandr

doi:10.31897/pmi.2018.6.604

Cited by 10 publications

(4 citation statements)

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“…Обеспечение устойчивости породных целиков за счет комплексного прогноза их напряженно-деформированного состояния позволяет повысить безопасность ведения горных работ, снизить вероятность перекрепления участков горных выработок и таким образом напрямую влиять на техникоэкономическую эффективность отработки [23][24][25].…”

Section: актуальность проведения исследованийunclassified

Integrated stress–strain analysis of pillars in apatite–nepheline ore mining by sublevel caving

Vilner¹,

Streshnev²,

Onuprienko³

2023

gzh

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Section: актуальность проведения исследованийunclassified

Integrated stress–strain analysis of pillars in apatite–nepheline ore mining by sublevel caving

Vilner¹,

Streshnev²,

Onuprienko³

2023

gzh

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“…We take the problem on deformation of rock mass in the vicinity of an extended horizontal opening in the conditions of generally tectonic natural stress field. One of the sources of higher rockburst hazard in mines in Western Siberia is the mixed gravity-and-tectonics type of the natural stresses in rock mass [15][16][17]. Some reference sources tell that the tectonic/gravity stress ratio ranges as 0.5 3  =  and can sometimes be 5  = and higher.…”

Section: Numerical Simulationmentioning

confidence: 99%

Mathematical models of rock mass affected by high pressure gradients

Ревуженко

Лавриков

2021

E3S Web Conf.

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The authors propose to solve the problems connected with high pressure gradients using a model of a linearly elastic body with a structural parameter. The closed finite difference system of equations is formulated for plain strain deformation conditions. The problem on deformation of rock mass in the vicinity of an underground opening affected by mixed-type gravity-and-tectonic stress field is solved. It is demonstrated that addition of the structure in the solution changes the value of the stress concentration coefficient.

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“…Especially in the underground excavation, the rock mass is subjected to the combination of high static load and frequent or cyclic external disturbances, among which the external disturbances include blasting, earthquake, mechanical vibration, etc. [1][2][3][4]. Under these conditions, the stress redistribution within a certain range caused by rock excavation and the external disturbance is the main cause of the frequent occurrence of disasters, such as rockbursts [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Fracture and Damage Characteristics of Granite under Uniaxial Disturbance Loads

Fei

Wang

et al. 2022

Buildings

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To investigate the mechanical properties and damage characteristics of granite under frequent disturbance loads in the process of underground engineering construction, laboratory uniaxial compression tests were conducted on granite under combined dynamic and static loading conditions. The following conclusions were reached: (1) under a dynamic disturbance, the failure stress of granite grows gradually as the initial stress and disturbance load rise due to the coupling of damage and strain-rate effect; (2) the characteristic stresses of granite specimens grow with the increasing amplitude of disturbance Δσ under the disturbing loads; with the same Δσ, the characteristic stresses show an increase trend with the increasing initial stress σm; (3) the particle size distribution of rock fragments broken under the disturbance load follows the fractal law, and the fractal dimension F gradually enlarges with the growth of Δσ, indicative of an increased degree of fragmentation; and (4) the damage variable grows rapidly at first, then steadily, and, finally, shows a rapid growth trend again under the disturbance loads. The Δσ significantly influences the number of cycles and rate of change of the damage variable during the steady increase. This research has certain theoretical significance and engineering guidance value for dynamic disaster recognition and control.

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Forecasting Rock Burst Hazard of Tectonically Disturbed Ore Massif at the Deep Horizons of Nikolaevskoe Polymetallic Deposit

Cited by 10 publications

References 0 publications

Integrated stress–strain analysis of pillars in apatite–nepheline ore mining by sublevel caving

Integrated stress–strain analysis of pillars in apatite–nepheline ore mining by sublevel caving

Mathematical models of rock mass affected by high pressure gradients

Fracture and Damage Characteristics of Granite under Uniaxial Disturbance Loads

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