Peak friction angle estimation from joint roughness coefficient of discontinuities of limestone in Peninsular Malaysia [PDF]
, 2017 The peak friction angle (φpeak) roughness of discontinuity surfaces is a value that is fundamental to the understanding of shear strength of geological discontinuities, considering its importance in determining the mechanical properties of the ...
Abdul Ghani Rafek, +5 more
core +1 more source
Fractal model and Lattice Boltzmann Method for Characterization of Non-Darcy Flow in Rough Fractures. [PDF]
, 2017 The irregular morphology of single rock fracture significantly influences subsurface fluid flow and gives rise to a complex and unsteady flow state that typically cannot be appropriately described using simple laws.
Chang, Chun +4 more
core +1 more source
Effect of Lower Surface Roughness on Nonlinear Hydraulic Properties of Fractures
Geofluids, 2021 This study investigates the effect of fracture lower surface roughness on the nonlinear flow behaviors of fluids through fractures when the aperture fields are fixed.
Jinglong Li +5 more
doaj +1 more source
Quantitative study on joint roughness coefficient (JRC) of rock mass
IOP Conference Series: Earth and Environmental Science, 2019 Ten Barton's standard roughness rating profile curves have been digitized by the interpolation approach with MATLAB software. It is proved that the way of digitizing the JRC curves is feasible, based on the contrastive analysis of slope root-mean-square of the JRC curves provided in this article and the others.
Bo Li +4 more
openaire +1 more source
Post-injection normal closure of fractures as a mechanism for induced seismicity [PDF]
, 2017 Understanding the controlling mechanisms underlying injection-induced seismicity is important for optimizing reservoir productivity and addressing seismicity-related concerns related to hydraulic stimulation in Enhanced Geothermal Systems.
E. Keilegavlen +5 more
core +2 more sources
ASEAN Journal on Science and Technology for Development, 2011 The basic friction angle, Φb for artificially sawn discontinuity planes for fresh granite, as determined by tilt testing, has an average value of 30º. For the natural rough discontinuity surfaces, a wide range of values have been determined for the peak ...
R. A Ghani +3 more
doaj +1 more source
Accurate and efficient explicit approximations of the Colebrook flow friction equation based on the Wright omega-function [PDF]
, 2018 The Colebrook equation is a popular model for estimating friction loss coefficients in water and gas pipes. The model is implicit in the unknown flow friction factor, f. To date, the captured flow friction factor, f, can be extracted from the logarithmic
Brkić, Dejan, Praks, Pavel
core +8 more sources
Detection of nanoseismic events related to slope instabilities in the quarry district of Coreno Ausonio (Italy) [PDF]
, 2016 Le cave per l’estrazione di materiale roccioso rappresentano contesti in cui possono aver luogo eventi di instabilità gravitativa causati dalle continue sollecitazioni cui sono soggette le pareti produttive, principalmente connesse alle vibrazioni dovute
FIORUCCI, MATTEO +3 more
core +1 more source
A New Method to Estimate the Joint Roughness Coefficient by Back Calculation of Shear Strength
Advances in Civil Engineering, 2019 The joint roughness coefficient (JRC) is an important factor affecting the shear properties of rock joints, and its accurate estimation is a challenging task in rock engineering.
Jiu-yang Huan +3 more
doaj +1 more source
Earth Science Research, 2012 La rugosidad superficial de las discontinuidades geológicas juega un papel importante en la influencia de la estabilidad de las masas rocosas. Se pueden adoptar varios enfoques para su determinación. Este documento presenta un enfoque simple mediante el cual se han derivado dos aproximaciones polinómicas para correlacionar el ángulo de fricción del ...
Abdul Ghani Rafek, Thian Lai Goh
openaire +2 more sources