Energy Efficient Technologies to Support Mine Workings under Complicated Geomechanical Conditions

Solodyankin, Olexandr; Hapieiev, Serhii; Vygodin, M. O.; Yanko, Valentin

doi:10.4028/www.scientific.net/aef.25.35

Cited by 4 publications

(6 citation statements)

References 1 publication

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“…27 and 33, including stiffening stops. The fencing of the interframe space will be metal mesh or reinforced concrete piece ones continuously with subsequent filling of the voids with grouting solutions after knitting works [9][10][11].…”

Section: Resultsmentioning

confidence: 99%

Experience and prospects of innovative main roadways construction and maintenance technologies of new coal units of PJSC «Mine Management «Pokrovske»

Levit,

Kamenets,

Chebotenko

2023

TAPR

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The object of research is the proven and promising innovative technologies for the construction and maintenance of main roadways in difficult mining and geological terms of the Private Joint Stock Company (PJSC) Pokrovske Mine Management of Metinvest-Pokrovskvugillia Group (Ukraine). The problem focused by the research is to ensure the effective innovative and modernized known technologies application of the main roadways construction and maintenance in new coal units. Namely, the roadways and chambers of the shaft yards, long horizontal and inclined main roadways to improve their operational state and technical and economic indicators of mining engineering and extracting operations. Based on the accumulated production experience, the results of the roadways state survey under construction and in operation, analysis of documentation and scientific and technical developments of world scientific institutions, recommendations for the investment projects implementation in terms of construction and mining technologies optimizing had formulated. The recommendations include the introduction of combined support systems adapted to mine management conditions, tunneling equipment of a new technical level of the world's best producers, methods of roadways maintaining by location in offloaded areas, and modern means of Geomechanic situation monitoring. The expected economic benefit of reducing the cost of roadways maintaining may be 20–25 %. The results are summaries of cooperation with the engineering and technical staff of Mine Management Pokrovske and Metinvest Holding. The results can be used in practice now, and more broadly after the victory and the start of economic recovery, including in Ukraine's mining sector.

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Section: Resultsmentioning

confidence: 99%

Experience and prospects of innovative main roadways construction and maintenance technologies of new coal units of PJSC «Mine Management «Pokrovske»

Levit,

Kamenets,

Chebotenko

2023

TAPR

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“…Currently, scientific sources often use concepts such as "large" and "small" depth of mining [1,2]. This division is because for "large" depths, under the influence of compressive stresses, a destruction zone is characteristically formed along the entire perimeter of the working, due to which rock disintegration occurs, static and dynamic manifestations of rock pressure appear, characterized by large deformations of the perimeter massif [3,4,5].…”

Section: Introductionmentioning

confidence: 99%

Assessing the stability of underground workings in urban infrastructure

Shapoval,

Shashenko,

Morklianyk

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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This article presents the analytical formulas necessary for making optimal design and technological decisions when laying shallow underground mine workings. They make it possible to determine the following critical parameters of mine workings: the critical height of the lift of the arch of natural equilibrium is the surface above which the rock is in an undestroyed state; stability coefficient of the arch of natural equilibrium (it shows in what state the rock above the excavation is); critical rock pressure is the pressure that, if exceeded, causes the rock to collapse above the working without support; critical depth of the mine working; critical pressure in the pore fluid is the pressure above which the rock collapse above the working without support; design maximum rock pressure with a given safety factor; design maximum depth of the working with a given safety factor; rock pressure on the support.

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“…Formation of fail ure areas along the entire perimeter of a roadway is typical for such conditions; rock failure within the periphery results from compression stresses. Numerous hypotheses consider sepa rately the phenomena being common to the 'great' depths with the formation of large zones of the deformed and disintegrated rocks [2]; decrease in roadway stability [3]; bedrock heaving [4]; dynamic manifestations of rock pressure.…”

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confidence: 99%

“…Involving the known values of an arch fall a and b as well as rock gravity, it is quite easy to identify Q p load per a long meter of a support length 2 4 4 . 3 3…”

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confidence: 99%

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Determining the parameters of a natural arch while forming support load of a horizontal roadways

Shapova¹,

Solodyankin²,

HRYHORIEV³

et al. 2021

Nauk. visn. nat. hirn. univ.

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Purpose. Development of a semiempirical method to identify rock pressure on the support of underground mine roadways as well as substantiation of its efficient use area taking into consideration the depth of the mine roadway, its geometry, and hardness of enclosing rocks. Methodology. Theoretical studies on geomechanical processes taking place in the neighbourhood of roadways using analytical mathematical methods as well as numerical ones. Analysis of the research results and their generalization are involved. Findings. Methods to identify load (i.e. rock pressure) on the supporting structures have been developed. The methods are based upon the proposed calculation technique for the rock stability coefficient at the boundary of contact between a collapsing arch of the rock (i.e. fall arch) and undisturbed rock mass, i.e. at the boundary of elastic share of peripheral rock mass, and non-elastic one. A stability coefficient has been proposed in the form of projection on vertical axis of forces holding the rock mass, limited by a fall arch, to projection of shear forces. Originality. For the first time, an analytical and empirical method to identify natural arch over horizontal and vertical mine roadways has been proposed involving their depth, geometry, parameters of rock strength, and its gravity. The abovementioned is the key distinction of the proposed method from the known semiempirical technique by M.M. Protodyakonov to determine natural arch as well as support load. Practical value. The findings make it possible to predict stability of horizontal mine roadways using mathematical methods. In this context, the depth, geometry, and hardness of enclosing rocks are taken into consideration.

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Energy Efficient Technologies to Support Mine Workings under Complicated Geomechanical Conditions

Cited by 4 publications

References 1 publication

Experience and prospects of innovative main roadways construction and maintenance technologies of new coal units of PJSC «Mine Management «Pokrovske»

Experience and prospects of innovative main roadways construction and maintenance technologies of new coal units of PJSC «Mine Management «Pokrovske»

Assessing the stability of underground workings in urban infrastructure

Determining the parameters of a natural arch while forming support load of a horizontal roadways

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