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Повышение устойчивости подземных выработок путем формирования новых геотехнических свойств прилегающих слоев методом роликового уплотнения
Purpose. To create a model reproducing the process of forming geotechnical properties of the rock massif adjoining circuit of underground excavation by roller compaction method incorporating hardening and creating the zone of slow plastic deformation. Methods. Modelling the main technological par...
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Main Authors: | , , |
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Format: | Article |
Language: | English |
Published: |
УкрНДМІ НАН України, Інститут геотехнічної механіки НАН України
2016
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Series: | Розробка родовищ |
Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/104713 |
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Summary: | Purpose. To create a model reproducing the process of forming geotechnical properties of the rock massif adjoining
circuit of underground excavation by roller compaction method incorporating hardening and creating the zone of
slow plastic deformation.
Methods. Modelling the main technological parameters of manufacturing process as for adjoining circuit of the tunnel:
distribution of normal pressures and heights of the core seal depending on the main strength and deformation
properties of rock massif, geometry and characteristics of the contact area of roller working body with the working
medium.
Findings. The choice of the computational model simulating the formation of adjoining mountain contour properties
by roller method has been justified taking into account the processes caused by soil deformation: appearance of elastic
and plastic deformation, change of soil characteristics, formation of compaction core. The main stages and parameters
interrelations in modelling the processing of the tunnel adjoining zone are shown.
Originality. Scientific novelty is referred to the development of a method to analyze contact interaction of the roller
working body of a molding machine with the massif, considering changes in the process of the treated medium physical
and mechanical properties stabilization, with the aim to predict the required stress and depth of the formed layer.
Practical implications. The research allowed to infer theoretical fundamentals for the formation of geotechnical
properties inherent to the adjoining contour of underground excavation by roller method, taking into account peculiarities
of soil deformation and contact interaction of the working body with the environment which allows to improve
the tunnel construction technology by strengthening the carrying capacity of the marginal massif. The obtained results
are instrumental in determining parameters of the elastic and plastic deformations zone with the view to establishing
its height and stresses. |
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