Numerical modeling approach for design of water-retaining dams in underground hard rock mines—a case example

2018 ◽  
Vol 11 (23) ◽  
Author(s):  
John Loui Porathur ◽  
Minnie Jose ◽  
Rana Bhattacharjee ◽  
Subashish Tewari
Keyword(s):  
Numerical Modeling ◽  
Hard Rock ◽  
Modeling Approach ◽  
Hard Rock Mines

scholarly journals Rockslides on limestone cliffs with subhorizontal bedding in the southwestern calcareous area of China

2014 ◽  
Vol 14 (9) ◽  
pp. 2627-2635 ◽  
Author(s):  
Z. Feng ◽  
B. Li ◽  
Y. P. Yin ◽  
K. He
Keyword(s):  
Numerical Modeling ◽  
Rock Mass ◽  
Hard Rock ◽  
Compression Fracture ◽  
Field Observations ◽  
Mountainous Areas ◽  
Hard Rocks ◽  
Rupture Plane ◽  
Rock Collapse ◽  
Cliff Retreat

Abstract. Calcareous mountainous areas are highly prone to geohazards, and rockslides play an important role in cliff retreat. This study presents three examples of failures of limestone cliffs with subhorizontal bedding in the southwestern calcareous area of China. Field observations and numerical modeling of Yudong Escarpment, Zengzi Cliff, and Wangxia Cliff showed that pre-existing vertical joints passing through thick limestone and the alternation of competent and incompetent layers are the most significant features for rockslides. A "hard-on-soft" cliff made of hard rocks superimposed on soft rocks is prone to rock slump, characterized by shearing through the underlying weak strata along a curved surface and backward tilting. When a slope contains weak interlayers rather than a soft basal, a rock collapse could occur from the compression fracture and tensile split of the rock mass near the interfaces. A rockslide might shear through a hard rock mass if no discontinuities are exposed in the cliff slope, and sliding may occur along a moderately inclined rupture plane. The "toe breakout" mechanism mainly depends on the strength characteristics of the rock mass.

scholarly journals Large-scale deformation in underground hard-rock mines

2015 ◽  
Vol 115 (7) ◽  
pp. 645-652 ◽  
Author(s):  
E. Karampinos ◽  
J. Hadjigeorgiou ◽  
P. Turcotte ◽  
F. Mercier-Langevin
Keyword(s):  
Large Scale ◽  
Hard Rock ◽  
Hard Rock Mines

scholarly journals Large-scale destress blasting for seismicity control in hard rock mines: A case study

2020 ◽  
Vol 30 (2) ◽  
pp. 141-149 ◽  
Author(s):  
Isaac Vennes ◽  
Hani Mitri ◽  
Damodara Reddy Chinnasane ◽  
Mike Yao
Keyword(s):  
Large Scale ◽  
Hard Rock ◽  
Destress Blasting ◽  
Hard Rock Mines
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