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A Coal Mine Dump Stability Analysis—A Case Study

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Author(s): Ashutosh Kainthola | Dhananjai Verma | S. S. Gupte | T. N. Singh

Journal: Geomaterials
ISSN 2161-7538

Volume: 01;
Issue: 01;
Start page: 1;
Date: 2011;
Original page

Keywords: Dump Stability | Factor of Safety | Shear Strength Reduction | Wardha Valley

ABSTRACT
The present paper mainly deals with a case study of failed dump slope in western coalfield limited, Nagpur, India. A huge mass of debris flow had happened during the routine the activity of mining. The failed dump had a height of 75 m with 43? slope angle which had slipped forward by 18m. Representative loose dump material samples were collected from the site and tested to determine the physico-mechanical properties of dump material. The dump material consisted of loose fragments and lumps of friable sandstone, shale, clay and carbonaceous shale. To evaluate the condition of failure, a well known, shear strength reduction tech-nique has been applied to achieve the desired factor of safety using two dimensional finite element code. Fi-nally, a economical, sustainable and stable dump angle and height has been suggested for smooth and safe disposal of the dump.
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