EXTRACTION DESIGN OF LOCKED-UP COAL BY HIGHWALL MINING IN INDIA

World Mining Congress

* John Loui Porathur1, Pijush Pal Roy2, Amar Prakash2, and J. C. Jhanwar1

1Central Institute of Mining and Fuel Research

Regional Center, III Floor, MECL Building

Seminary Hills, Nagpur-440006, India

(*Corresponding author: johnlouip@yahoo.com)

2Central Institute of Mining and Fuel Research

Barwa Road, Dhanbad-8260015, India

Highwall Mining has been recently introduced in India. The first Continuous Highwall Mining extraction in India started operating at Ramagundem Opencast Project-II (OC-II) of Singareni Collieries Company Ltd. (SCCL) in December 2010. A new hybrid empirical and numerical modelling approach has been devised to design web pillars for the initial Highwall Mining sites in India, considering the complex geology, such as existence of thick seams and multiple seams in close proximity. This paper gives the scientific elucidation of a comprehensive design methodology adopted for the above mentioned Indian Highwall Mining sites. The design technology includes web pillar design for multiple seams using hybrid empirical and numerical methods, slope stability assessment, ground movement monitoring, and recommendations for conducting blasting operations in the vicinity of Highwall Mining extractions.
Keywords: mining; Pillars; pillar; India; Extraction; Design; Mine; Mines;
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