- Credits: 6
- SSD: 0
- Language: Italian
- Moduli: (Modulo 1) Sante Fabbri (Modulo 2)
- Teaching Mode: Traditional lectures (Modulo 1) Traditional lectures (Modulo 2)
- Campus: Bologna
- Corso: Second cycle degree programme (LS) in Environmental and Territory Engineering (cod. 0450)
Learning outcomes
During Laboratory the physical and mechanical properties of rocks (and in general of natural porous media) will be further investigated. These investigations are addressed both to evaluate the stability of underground and open pits works, and to evaluate and exploit underground fluids (water and/or hydrocarbons).
Course contents
PART ONE (Prof. Ezio MESINI, 3 CFU)
Physical properties of rocks and in general of porous media.
Water content; apparent and real density (both by picnometer and by hydrostatic weight; porosity measured by liquid saturation and by Helium porosimeter. Gas permeability (Klinkenberg effect). Water (or liquids) permeability by using both variable and constant head. Water permeability in oedometric cell; Saturation measurements by solvent extraction (Sohxlet extraction). Resistivity measurements by electrolitic solutions; Measurements of resistivity formation factor. Wettability; Surface/interfaccial tension. Capilllary pressure curves (drainage and imbibition); Measument of transit time of elastic waves (longitudinal, p, and trasverse, s).
Drilling fluid characterization.
Density determination of liquids. Rheology: Newtonian fluids; Bingham fluids; Power law and rheological model of Hershel-Bulkley. Filterpress measurements. Determination of the viscosity of liquids and suspensions by rotational viscosimeter. Determination of drilling fluids viscosity followig API procedures.
PART TWO (prof. Sante FABBRI, 3 CFU)
The preparation of the specimens to take laboratory tests for physical and mechanical properties: cutting-off machine; core sampler; grinder.
Laboratory tests to evaluate the mechanical characteristics of the rocks: uniaxial compression; triaxial compression; determination of the modulus of elasticity; flexure; shear; point load test; R.H.I.N.
In laboratory physical testing of the rocks: abrasion strength; sliding strength; Knoop microhardness.
Vibrations generated by blasting: measurements and recordings to evaluate the effects on the structures.
Noise level measurements during mining works.
Readings/Bibliography
Technical specifications (API, UNI, ecc.), sinopsis approved by teachers.
Teaching methods
Lessons will be kept both in classroom, and in laboratory (at DICMA Dept. Georesources and Geotechnologies Section).
Assessment methods
Idoneity will be reached after a final and positive oral examination (intermediate examination can be scheduled).
Teaching tools
VHS Cassettes
Overhead projector
PC
Laboratory