Analysis of 2D and 3D estimates of pit wall stability

Authors: KALYUZHNY A. S.

The article describes the pit wall stability estimation by the Morgenstern–Price method in software environment Slide3, SVOFFICE 2009 (package SVSlope) and using VNIMI’s Guidelines. In 3D Morgenstern–Price evaluation, there are two zones with the least safety factors: in the northwest (SF = 1.6) and in the northeast (SF = 1.3). The safety factor evaluated in different sites of the pit wall with regard to structural inhomogeneity ranges between 1.3 to 2.6. The estimates of the safety factor in 3D formulation are higher than in 2D formulation when the pit wall is incurved along the strike. Without incurvity or cambering of the pit wall along the strike, the 2D and 3D estimates of the pit wall stability are the same. The values obtained in 2D solutions by the Morgenstern–Price method and software packages agree with the calculations by VNIMI’s Guidelines.

Keywords: open pit mine, pit wall, slope, Russian Arctic zone, stability estimation, safety factor, weakened surface, Morgenstern–Price.
For citation:

Kalyuzhny A. S. Analysis of 2D and 3D estimates of pit wall stability. MIAB. Mining Inf. Anal. Bull. 2021;(10):123-133. [In Russ]. DOI: 10.25018/0236_1493_2021_10_0_123.

Acknowledgements:
Issue number: 10
Year: 2021
Page number: 123-133
ISBN: 0236-1493
UDK: 622.015: 622.271.33
DOI: 10.25018/0236_1493_2021_10_0_123
Article receipt date: 25.11.2020
Date of review receipt: 07.12.2020
Date of the editorial board′s decision on the article′s publishing: 10.09.2021
About authors:

A.S. Kalyuzhny, Researcher, e-mail: anton26@goi.kolasc.net.ru, Mining Institute, Kola Scientific Centre of Russian Academy of Sciences, 184209, Apatity, Russia.

 

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