Assessment Concerning the Domain of Applicability of Protodiakonov Method in Calculus of Underground Structures

Popovici, A.; Ilinca, Cornel; Anghel, Cristian Gabriel

doi:10.1515/mmce-2017-0003

Cited by 2 publications

(2 citation statements)

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“…Using the formulas (8), (21)(22) and geometric equations (ε r rez =du rez /dr and ε t rez =u rez /r), the system of equations (27-28) can be transformed into the following form:…”

Section: The Influence Of Inelastic Zones Around the Excavation On Thmentioning

confidence: 99%

“…The mechanism of rock mass impact on the support of the underground excavation roadway has been the subject of numerous studies presented, among others in the works [4,18,30]. As a result, many models of computational loads of the rock mass onto the support were developed, adapted to the mining and geological conditions in the vicinity of the excavation [2,10,12,21]. Individual models differ with their simplifying assumptions.…”

Section: Introductionmentioning

confidence: 99%

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Modeling of Post-Failure Behavior of the Rock Mass and its Effect on the Stress-Deformation State in the Vicinity of a Mining Excavation

Marczak¹

2019

Adv. Sci. Technol. Res. J.

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The study investigated the impact of post-failure properties of the rock mass on the stress-deformation state in the vicinity of the underground excavation and the pressure exerted on the support. An analytical solution to the problem was presented, including the creation of inelastic zones in the vicinity of the excavation: ideal-plastic zone with residual strength and plastic zone with mild decrease of rock medium strength and taking into account the dilatancy. The analysis of the obtained dependencies was carried out using geotechnical parameters characterizing the Carboniferous rock mass of a hard coal mine. The influence of the plastic zone was determined with a mild decrease in strength to the state of stress, deformation and pressure on the rock mass support. The results of the considerations were compared with the solution, which omitted the softening of the rock mass and the solution based on the model of the elastic-plastic-brittle medium. The results of the analysis broaden the knowledge on the behavior of the rock medium in the vicinity of the excavation. The obtained solution can be further developed in order to enable its practical application, especially under the conditions in which the behavior of the rock medium in the vicinity of the excavation well reflects the elastic-plastic model with a gentle drop in the strength of the rock material.

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“…Using the formulas (8), (21)(22) and geometric equations (ε r rez =du rez /dr and ε t rez =u rez /r), the system of equations (27-28) can be transformed into the following form:…”

Section: The Influence Of Inelastic Zones Around the Excavation On Thmentioning

confidence: 99%