Experimental data: Stress-transmissivity measurements on natural granite rock fracture subjected to compression

This repository contains data generated during an experimental study focused on characterizing the hydro-mechanical properties of a natural fracture extracted from a granite rock mass and tested in laboratory conditions under varying normal compression stress. The hydraulic transmissivity of the fracture was initially inferred from flow measurements in the two perpendicular directions of the fracture for normal stresses up to 8 MPa. The fracture was then mechanically opened, surveyed, and reassembled, and the flow measurements repeated under normal stresses up to approximately 40 MPa. Laminar flow conditions were maintained throughout the investigation by ensuring very low Reynolds numbers. The dataset generated from the experiments encompasses measurements of the flow and hydraulic transmissivity of the fracture, fracture characteristics (mechanical and hydraulic aperture), and related test parameters (pressure, temperature, gradient, etc.). The data shed light on the hydro-mechanical behavior of low- to very-low-transmissivity fractures in situ. They are made openly available to support further hydrogeological investigations on low-permeability rock masses.

To cite this dataset:

Godio M., Jacobsson L. (2024). Stress-transmissivity measurements on natural granite rock fracture subjected to compression: findings from unopened and opened/reassembled fracture. International Journal of Rock Mechanics and Mining Sciences. Under review