Nonuniform Stress State of a Hoisting Shaft Lining as a Result of Disturbance of the Ground Freezing Technology
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Date
2019
Journal Title
Journal ISSN
Volume Title
Publisher
EDP Sciences
Abstract
ENG: Abstract. The paper deal with the defining stress state of a hoisting shaft
lining, lying in the sandy loam, when performing and disturbing the ground
freezing technology. The relevance of the performed research lies in the
fact that at nonuniform freezing or defrosting, nonuniform stress state is
formed, which causes a significant over-stresses of the lining. To research
the nonuniform stress state, a spatial finite element model of a hoisting
shaft was developed, in which the case of nonuniform ground freezing was
simulated. The calculation by the finite-element technique was carried out
on the basis of the computational professional complex Structure CAD for
Windows. In the course of the analysis, the values of stress state for linings
made of reinforced-concrete blocks, B30 concrete, gray and modified castiron
tubbings. A comparison of the components of stress state for sandy
loam at a temperature of -2 °C (freezing), nonuniform freezing and at a
temperature of + 8 °C (defrosting) was carried out. It was found that for the
proposed geotechnical conditions in the form of soft, water-saturated sandy
loam, it is recommended to use a lining made of gray and modified castiron
tubbings.
Description
O. Tiutkin: ORCID 0000-0003-4921-4758; A. Radkevych: ORCID 0000-0001-6325-8517; A. Alkhdour: ORCID 0000-0002-4148-5994;
V. Miroshnyk: ORCID 0000-0002-8115-0128
Keywords
lifting shaft lining, soil freezing technology, nonuniform stress state, КМТ, КБВ
Citation
Tiutkin O., Miroshnyk V., Radkevych A., Alkhdour A. Nonuniform Stress State of a Hoisting Shaft Lining as a Result of Disturbance of the Ground Freezing Technology. E3S Web of Conferences. 2019. Vol. 109 : International Conference Essays of Mining Science and Practice, RMGET 2019, Dnipro, Ukraine, 25–27 June 2019. Dnipro, 2019. DOI: 10.1051/e3sconf/201910900099.