Ignore the mechanical break caused by the drilling process. RQD is defined as the percentage of intact core pieces longer than 10 cm in the total length of core. Theory: The Rock Quality Designation (RQD) was developed by Deere in 1967 to provide a quantitative estimate of rock mass quality from drill core logs drilled with a double-tube core barrel. 42Įxperiment 1: Core recovery percentage and Rock quality designation (RQD) Aim: To determine the core recovery percentage and rock quality designation (RQD) of the given borehole logs Apparatus: 32 Experiment 11: Triaxial Compressive Strength. 30 Experiment 10: Point Load Strength Index. 26 Experiment 8: Schmidt Rebound Hardness. 25 Experiment 7: Non destructive tests (NDT) to determine Young modulus (E). 23 Experiment 6c: Shear Strength by Punch. 17 Experiment 6a: Uniaxial Compressive Strength.
14 Experiment 5b: Coefficient of permeability by falling head method. 11 Experiment 5a: Coefficient of permeability by constant head method. 9 Experiment 4: Determination of Bulk & Grain density, Absolute porosity and Void ratio of a rock sample by Pycnometer. 3 Experiment 2: Protodyakonov Strength Index. Department of Mining Engineering, IIT KharagpurĪbstract: the documents contain the methodology for determination of various physical and mechanical properties of rock and soil type material.Ĭontents Experiment 1: Core recovery percentage and Rock quality designation (RQD).