Out of about 1.2 billion people in India, 68% people live on agriculture as their main occupation. Ground water is therefore an important resource which provides over 70% of rural drinking water supply and about 50% of water used for irrigation. Rains in Monsoon season from June to September, provide the main source of water but they last only for four months and the rest of the year is dry in ...

Abstract Pillar collapses are events that due to their severe consequences can be classified as high risk. The design of pillars in underground room-and-pillar operations should migrate risk-based approaches. authors this work proposed a pillar methodology integrates stochastic discrete element modeling for strength estimation, and finite volume (FVM) stress estimation. This paper focuses on th...

In extra-thick coal seams, mining operations can lead to large-scale disturbances, complex overburden structures, and frequent and strong strata behavior in the stope, which are serious threats to mine safety. This study analyzed the overburden structure and strata behavior and proposed the technique of confined blasting in water-filled deep holes as a measure to prevent strong rock pressure. I...

Room-and-pillar mining is commonly employed for the extraction of rock salt in underground mines. Pillar stress a major concern these mines as it directly related to stability and mineral recovery. In this study flat jack method was used measure pillar stresses three Pakistan. The field work included determination in-situ stress, elastic modulus, recording variables (pillar length width, height...

The first step in mining activities is rock excavation in both mine development and production. Constant pressure for cost reduction and creating an improved/safe work environment for personnel has naturally resulted in increased use of mechanical excavation systems in many mining operations. Also, mechanical excavation and mining is more compatible with automation, meaning possibility of reduc...