Determination and quality classification of rock mass of the Diatomite mine, Algeria

Reserch relaevance. Most ground movements are generally due to rock instability, this natural phenomenon poses a risk humanity. The properties of the mass directly influence type movement especially in underground structures. Research aim. Our goal is characterize and classify diatomite from sig mine using geomechanical classification systems such as RQD RMR order determine quality rocks Western Algeria determination physical mechanical properties. Methodology. In article, characterization analysis was carried out. First, determinations out triaxial test (young’s modulus, friction angle, dilatancy cohesion, poisson’s ratio). Secondly deposit give recommendation avoid stability problems. results. results analyzes, it can be said that nature present (underground mine) does not have enough resistance. Conclusion. study definitively proves very low will dangerous for mining work places where mineralized layer deep. And we suggest replace technique room pillar currently used put another method which includes roof support system ensure safety both miners equipment.