Effect of large blocks position on stability analysis of block-in-matrix slopes

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KHORASANI E.; AMINI M.; Hossaini M.F.

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Journal: JOURNAL OF MINING AND ENVIRONMENTAL (INTERNATIONAL JOURNAL OF MINING & ENVIRONMENTAL ISSUES) Year:2019 | Volume:10 | Issue:2 Page(s): 465-477

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Title

Effect of large blocks position on stability analysis of block-in-matrix slopes

Author(s)

KHORASANI E. | AMINI M. | Hossaini M.F. | Issue Writer Certificate

Keywords

BimrocksQ1

BimslopesQ1

Large BlocksQ1

Numerical ModelingQ1

Physical ModelingQ1

Abstract

Bimrocks are complex geomaterials that are defined as mixtures of rocks composed of geotechnically significant blocks within a matrix of finer texture. Bimslopes are made from Bimrocks and are usually seen in weathered and shallow environments. Some characteristics of blocks affecting the strength of Bimrocks include VBP (Volumetric Block Proportion), orientation, and arrangement, which have important roles in the stability of Bimslopes. Previous studies show that Bimrocks usually have a specific block size distribution, and for a bimslope with height of “ H” , the size of blocks is changed from 0. 05H to 0. 75H. In this paper, the influence of Large Blocks position on bimslope stability was investigated by the physical and numerical models. The blocks that had a dimension larger than 0. 5H were considered as “ Large Blocks” . In this work, first, thirty physical models were created and tested using a titling table machine. These models have a specific block size distribution and VBP with ellipsoidal blocks. The main variable of the models is Large Blocks position, where three categories including lower part of bimslope, upper part of bimslope, and sporadic state are considered. Based on the results of physical trials, thirty numerical models at the laboratory scale were generated using the finite element method. After comparing the physical and numerical models, which showed a good accordance, the numerical models were developed to the natural scale. The theoretical Bimslopes investigated in this work showed that the position of Large Blocks had a significant influence on the stability of Bimslopes.

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APA: Copy

KHORASANI, E., AMINI, M., & Hossaini, M.F.. (2019). Effect of large blocks position on stability analysis of block-in-matrix slopes. JOURNAL OF MINING AND ENVIRONMENTAL (INTERNATIONAL JOURNAL OF MINING & ENVIRONMENTAL ISSUES), 10(2 ), 465-477. SID. https://sid.ir/paper/256305/en

Vancouver: Copy

KHORASANI E., AMINI M., Hossaini M.F.. Effect of large blocks position on stability analysis of block-in-matrix slopes. JOURNAL OF MINING AND ENVIRONMENTAL (INTERNATIONAL JOURNAL OF MINING & ENVIRONMENTAL ISSUES)[Internet]. 2019;10(2 ):465-477. Available from: https://sid.ir/paper/256305/en

IEEE: Copy

E. KHORASANI, M. AMINI, and M.F. Hossaini, “Effect of large blocks position on stability analysis of block-in-matrix slopes,” JOURNAL OF MINING AND ENVIRONMENTAL (INTERNATIONAL JOURNAL OF MINING & ENVIRONMENTAL ISSUES), vol. 10, no. 2 , pp. 465–477, 2019, [Online]. Available: https://sid.ir/paper/256305/en

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