The mechanism of roadway deformation in conditions of laminated rocks

• Autorzy: Khalymendyk I. , Baryshnikov A.

Identyfikatory

DOI

10.1016/j.jsm.2018.03.004

• Języki publikacji: EN

Abstrakty

EN

The high stress condition of the rock mass requires a change in the approach to the design and usage of roadway support. It is necessary to take into account the mutual deformations of the "support - rock mass" system, as well as the peculiarities of the deformation mechanism of the roadway rock contour. The purpose of this paper is to analyze the mechanism of roadway deformation in conditions of laminated rocks and "deep mine". A simple approach to the analysis of stress distribution around the roadway that includes Kirsch equations is used. It is shown that the strength anisotropy determines the weakest place in the roadway contour, where destruction takes place. The deformation of the rock mass around a single roadway occurs in the form of extrusion wedges of laminated rocks in the roof and floor is also show. The results of in-situ observations over the displacement of the roof and the floor of "deep mine" roadways are analyzed. The linear correlation between roof sag and floor heave is established. It is stressed that roof sag must be prevented in order to effectively counteract the extrusion of the floor rock.

Słowa kluczowe

EN

roadway; high stress conditions; stress ratio; strength anisotropy; wedge of rocks extrusion; vertical convergence

PL

chodnik; warunki dużych naprężeń; współczynnik naprężenia; anizotropia wytrzymałości; konwergencja pionowa

• Wydawca: Elsevier ; Główny Instytut Górnictwa
• Czasopismo: Journal of Sustainable Mining
• Rocznik: 2018
• Tom: Vol. 17, iss. 2
• Strony: 41--47
• Opis fizyczny: Bibliogr. 21 poz.

Twórcy

autor

Khalymendyk I.

• State HEI “National Mining University”, Dmytra Yavornitskogo av., 19, Dnipro, 49000, Ukraine

autor

Baryshnikov A.

• State HEI “National Mining University”, Dmytra Yavornitskogo av., 19, Dnipro, 49000, Ukraine

Bibliografia

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