TITLE:
A Coal Mine Dump Stability Analysis—A Case Study
AUTHORS:
Ashutosh Kainthola, Dhananjai Verma, S. S. Gupte, T. N. Singh
KEYWORDS:
Dump Stability, Factor of Safety, Shear Strength Reduction, Wardha Valley
JOURNAL NAME:
Geomaterials,
Vol.1 No.1,
April
20,
2011
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.