Perspective Schemes Equipment Ultra-deep Shafts

Yagodkin, F I; Плешко, М. С.; Prokopov, Albert

doi:10.1016/j.proeng.2017.10.476

Cited by 10 publications

(3 citation statements)

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“…and others, features of the interaction of the support and rock mass in the bottomhole working area are considered taking into account the sinking technology, the influence of adjacent and adjacent workings, special operation methods and other factors. The obtained results have been successfully adapted to the drilling and blasting technology of shaft sinking by combined and parallel schemes [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. At the same time, high rate sinking of shafts by mechanized equipment complexes is characterized by a different sequence of opening the crosscut end and the time periods for the entry of permanent and temporary support into work, the absence of a negative influence on the structures in the shaft and the surrounding rock mass of blasting operations, additional loads on the support from the tunnel system and other features.…”

Section: Matec Web Of Conferences 193mentioning

confidence: 99%

Analytical analysis of the stress-strain state of the system “mechanized equipment complex - support – rock mass” in the bottomhole area of the shaft

Pankratenko

Плешко

Isaev³

2018

MATEC Web Conf.

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Abstract. The development of new deposits requires the construction of deep and super deep vertical shafts. The duration of their construction reaches 8 -10 years with multi-billion capital investments. To reduce the payback period of these costs, it is necessary to develop and implement effective solutions to increase the speed of sinking operations through the wide introduction of brand-new mechanized equipment complexes. In response to the sinking in the bottomhole area of the shaft, the following geotechnical system is being formed: "tunnelling system -support -rock mass", the regularities of which require further study. For these purposes, an analytical method for calculating the shaft support can be used in the context of consideration of a planar contact problem at various phases of the system operation. The mutual coordination of individual phases in accordance with the classical concepts of the underground structures mechanics is possible using a correction factor to the magnitude of horizontal stresses in the rock mass. In this paper, we developed the algorithm which determines this coefficient, taking into account the influence of the main technological factors: the pressure of the jack system of the complex and the speed of sinking.

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Section: Matec Web Of Conferences 193mentioning

confidence: 99%

Analytical analysis of the stress-strain state of the system “mechanized equipment complex - support – rock mass” in the bottomhole area of the shaft

Pankratenko

Плешко

Isaev³

2018

MATEC Web Conf.

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show abstract

“…There are various methods and technological schemes for the construction of vertical shafts [1,2], differing in the equipment of the surface for sinking, the technologies and equipment used for destruction, loading and transportation of rocks, the design of temporary and permanent lining, the sequence of the main and auxiliary technological processes. When choosing a method, technological scheme of drilling, structure of support and reinforcement of a vertical shaft, a large number of factors are taken into account, the main of which are the shaft depth and diameter, mining and geological and hydrogeological conditions of drilling, as well as the whole range of permanent, temporary and special loads, including technological and operational, and their most unfavorable combinations [2].…”

Section: Introductionmentioning

confidence: 99%

The use of piles with an adjustable operation mode to restraint the shaft sinking systems’ supporting structures

2021

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The article deals with the problem of ensuring the stability of grillages and pile foundations used to hold shaft sinking systems during the construction of vertical subway shafts. The features of such foundations’ operation in the process of shaft sinking are investigated, in contrast to similar structures that receive pressure from a building under construction. The importance of taking into account the mutual influence of shaft sinking and pile foundations of the shaft sinking systems’ supporting structures is shown. The design of bored piles and the technological scheme of mortar injection are proposed, which provide a change in the operating mode of pile foundations and regulation of its bearing capacity.

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“…and others, features of the interaction of the support and rock mass in the bottomhole working area are considered taking into account the sinking technology, the influence of adjacent and adjacent workings, special operation methods and other factors. The obtained results have been successfully adapted to the drilling and blasting technology of shaft sinking by combined and parallel schemes [1][2][3][4][5][6][7][8][9][10][11][12][13]. At the same time, high rate sinking of shafts by mechanized equipment complexes is characterized by a different sequence of opening the crosscut end and the time periods for the entry of permanent and temporary support into work, the absence of a negative influence on the structures in the shaft and the surrounding rock mass of blasting operations, additional loads on the support from the tunnel system and other features.…”

Section: Introductionmentioning

confidence: 99%

The Analysis of the Stress-Strain State of the System “Equipment Complex - Support - Rock Mass” in the Bottomhole Area of the Shaft

Pankratenko

Isaev²

2018

E3S Web Conf.

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Abstract. The development of new deposits enterprises requires the construction of deep and super deep vertical shafts. The duration of their construction reaches 8 -10 years with multi-billion capital investments. To reduce the payback period of these costs, it is necessary to develop and implement effective solutions to increase the speed of sinking operations through the wide introduction of brand-new mechanized equipment complexes. In response to the sinking in the bottomhole area of the shaft a complex, the following geotechnological system is being formed: "tunneling system -support -rock mass", the regularities of which require further study. For these purposes, an analytical method for calculating the shaft support can be used in the context of consideration of a planar contact problem at various phases of the system operation. The mutual coordination of individual phases in accordance with the classical concepts of the underground structures mechanics is possible with the help of a correction factor to the magnitude of horizontal stresses in the rock mass. In this paper we developed the algorithm which determines this coefficient, taking into account the influence of the main technological factors: the jack system pressure of the complex and the speed of sinking.

show abstract

Perspective Schemes Equipment Ultra-deep Shafts

Cited by 10 publications

References 0 publications

Analytical analysis of the stress-strain state of the system “mechanized equipment complex - support – rock mass” in the bottomhole area of the shaft

Analytical analysis of the stress-strain state of the system “mechanized equipment complex - support – rock mass” in the bottomhole area of the shaft

The use of piles with an adjustable operation mode to restraint the shaft sinking systems’ supporting structures

The Analysis of the Stress-Strain State of the System “Equipment Complex - Support - Rock Mass” in the Bottomhole Area of the Shaft

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