Review Paper:
Application of
Laubscher MRMR classification system in the design of open-pit chromite mines –
A case study
Kumar Dinesh, Avchar Akhil, Modak Kunal and Kushwaha Abhishek Kumar
Disaster Advances; Vol. 18(5); 216-221;
doi: https://doi.org/10.25303/185da2160221; (2025)
Abstract
The study work was conducted at the Boula Chromite Mine site, focusing on geotechnical
field observations in and around the area. The investigation aimed to comprehensively
analyze surface and underground conditions, structural features, rock mass conditions
and slope stability. The stereo net plot method was employed for slope stability
analysis. Slope failures in rock masses were observed at the mine site at a few
locations, prompting us to delve into understanding the events and proposing precise
recommendations for safe and efficient mining practices. The analysis of results
formed the core objective of this study. To achieve the stated goal, a rational
and systematic study in the field was conducted. This encompassed examining the
geological and structural setup of rock formations, conducting field investigations
to asses various geotechnical parameters, identifying the most influential factors
affecting rock mass behavior, categorizing rock masses into groups based on similar
behavior (rock mass classes), gathering structural data on slopes, classifying rock
mass conditions using Laubscher’s rock mass classification and determining failure
modes (planar, wedge, toppling and circular) in rock slopes through graphical analysis.
The comprehensive rock mass classification and failure analysis were compiled in
this work. The findings are crucial for identifying and thoroughly analyzing potential
risks. This knowledge can play a pivotal role in ensuring the safety and efficiency
of mining operations in and around the Boula Chromite Mine site. Moreover, the knowledge
acquired from the study can be instrumental in planning and opening pit projects
with similar geotechnical and mining conditions. The study thus provides valuable
information for the broader field and contributes to the overall advancement of
safe and effective mining practices.
