What is RMR and Q system and what are their parameters and how are they calculated.

Question

Accepted Answer

RMR and Q system are rock mass classification systems used in geology to evaluate the stability of rock slopes and tunnels.

RMR stands for Rock Mass Rating and Q system stands for Quartzite Rating System.
RMR uses six parameters including uniaxial compressive strength, rock quality designation, joint spacing, joint condition, groundwater conditions, and orientation of discontinuities.
Q system uses three parameters including the quality of the rock mass, the stress conditions, and the type of support used.
Both systems are used to evaluate the stability of rock slopes and tunnels and to determine the appropriate support measures.
RMR and Q system are widely used in mining, civil engineering, and tunneling projects.

Popular interview questions of Senior Geologist