Optimisation of stoping parameters for a cut and fill stope at Chikla mine of MOIL Ltd: A case study

摘要

MOIL Ltd. (formerly Manganese ore India limited) operates 10 mines. Out of this 7 mines are underground. Chikla mine is one of the underground mines. The mining method employed here is horizontal cut & Fill. The present paper describes the studies conducted to optimize the stoping parameters for better safety and productivity at Chikla mine. Support requirements for the proposed stope block between Ch-2365 and Ch-2425 from level 3 to level 2 is evaluated through the empirical methods and the stability of the crown pillar and the support behaviour is studied with numerical modeling. It was found that the wall rocks and the ore body have distinct strength properties and the rock mass falls in to good and fair categories. Two most popular rock mass classification systems were used for estimating the support requirements for the proposed stope block. A two dimensional finite deference code was used for numerical modeling. This paper presents the geotechnical parameters of the study area and the empirical support design and the numerical modeling results for the proposed stoping block at Chikla Mine.