Mine stability with application of sublevel caving schemes

Freidin, A. M.; Неверов, С. А.; Неверов, А. А.; Filippov, P. A.

doi:10.1007/s10913-008-0008-z

Cited by 15 publications

(4 citation statements)

References 2 publications

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“…On the whole, the stress distribution in the orebody is uniform and the geomechanical situation is assumed propitious. The stability of excavations and rocks has been determined using the Mohr-Coulomb criterion based on the shear fracture theory [11,12].…”

Section: Modeling Resultsmentioning

confidence: 99%

Selection of deep level geotechnology in terms of the Vostok-2 orebody

et al. 2012

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Section: Modeling Resultsmentioning

confidence: 99%

Selection of deep level geotechnology in terms of the Vostok-2 orebody

et al. 2012

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“…Regarding the issue of coal pillars, research has been conducted on the conditions that affect their stability [4], the characteristics that signify their instability and failure [5], their pressure relief properties [6], the evaluation method used for coal-pillar stability assessments [7], and the calculation formula used for coal-pillar strength assessments [8]. In relation to the issue of the roof, research has been conducted on the influencing factors of roof stability [9], including the safe thickness property of a roof [10] and the total span of the roof [11], as well as other issues. Some scholars have also evaluated the coupling of a coal pillar and roof [12].…”

Section: Introductionmentioning

confidence: 99%

Applicable Conditions of Room-and-Pillar Mining Goaf Treatment Methods under a Traffic Load

Han

et al. 2023

Applied Sciences

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The disturbance depth of traffic load has a direct impact on the stability of a room-and-pillar mining goaf. To quantitatively calculate the relationship between the traffic load disturbance depth and influencing factors, 49 groups of horizontal combinations of different influencing parameters are designed in this study, based on the orthogonal experimental design method. Midas GTS is used to simulate and obtain the corresponding traffic load disturbance depth data. A multivariate linear regression analysis of the traffic load disturbance depth is conducted, and a regression formula for calculating the traffic load disturbance depth is established. According to the traffic load disturbance depth, goaf depth, and the stability of the roof, coal pillar, and base plate under traffic load conditions, a judgment flow of the room-and-pillar mining goaf treatment method under traffic load conditions is established, and it is applied to the reconstruction and expansion project of the Jixi section of the Dan-A national highway. The results show that a geogrid can be used for treatment purposes when the traffic load disturbance depth is 1.5 times lower than the depth of the room-and-pillar mining goaf, or when the traffic load disturbance depth is 1.5 times greater than the depth of the room-and-pillar mining goaf but the roof, coal pillar, and base plate are stable. Additionally, grouting is needed for treatment in other cases. The results of this study can provide a scientific basis for the selection of treatment methods for room-and-pillar mining goafs underlying highways in the future. The results are of great significance in the field of engineering for the safety measures concerning highway room-and-pillar mining goafs.

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“…In tunnel engineering, the theoretical problem of determining the rock pressure occupies a central place. Over the past century and a half, a large number of works have been published that discuss solutions to this problem; the results of previous studies have led to the development of special methods for calculating the shape of arches and the pressure on underground structures [1][2][3][4][5][6]. Of particular interest are methods for calculating the stressstrain state of the ground environment around mine workings, including at their limit state.…”

Section: Introductionmentioning

confidence: 99%

Rock pressure calculation for rocky and disperse soils

Korolev

Stakhnyov²,

Kuznetsov³

2023

E3S Web Conf.

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The paper discusses the classical problem of determining rock pressure on a mine working support. In this problem, the authors differentiate two cases – rock pressure in rocky soils and rock pressure in dispersed soils. This division is due to the significant differences observed in the rocky and dispersed soils in their ultimate states. In particular, while the strength of dispersed soils can be described by the Coulomb line, for rocky soils the envelope of the Mohr circles has a pronounced nonlinear character. It was found as a result of calculations that there exist three supporting schemes for any soil depending on the width of excavation: self-restraining arch (or ceiling), pressure arch, and caving column. The paper introduces the concept of two critical spans of a mine working that differentiates the said schemes. A hypothesis has been proposed and verified that the process of rock pressure formation is quite similar to that for active pressure on retaining structures.

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Mine stability with application of sublevel caving schemes

Cited by 15 publications

References 2 publications

Selection of deep level geotechnology in terms of the Vostok-2 orebody

Selection of deep level geotechnology in terms of the Vostok-2 orebody

Applicable Conditions of Room-and-Pillar Mining Goaf Treatment Methods under a Traffic Load

Rock pressure calculation for rocky and disperse soils

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