Results 71 to 80 of about 1,853 (153)
Abstract Melt migration in partially molten rocks is commonly described by porous flow models controlled by the hydro‐mechanical compaction length, which effectively explains melt extraction at mid‐ocean ridges. However, this framework cannot account for the paradoxical accumulation of small melt fractions into rhythmic leucosome–melanosome bands in ...
Qingpei Sun +3 more
wiley +1 more source
A Fractal-Enhanced Mohr–Coulomb (FEMC) Model for Strength Prediction in Rough Rock Discontinuities
Accurate prediction of the shear strength of rock discontinuities requires accounting for surface roughness, which is a factor neglected in the classical Mohr–Coulomb criterion.
Dina Kon +4 more
doaj +1 more source
To improve the resources’ recovery ratio and the economic benefits of open-pit mines, the development of highwall mining is used to exploit residual coal.
Rui Wang +4 more
doaj +1 more source
Abstract This study examined the spatiotemporal variability in geotechnical properties of beach cusp sediments on a sandy beach and tested if such variability can be used for cusp monitoring from satellite imagery. Specifically, sediment properties (including moisture content (w), relative density (Dr), sediment strength (QSBC) and friction angle (ϕ ...
Stephen Adusei +3 more
wiley +1 more source
Abstract Submarine landslides occur globally and have the potential to damage seafloor infrastructure and trigger tsunamis. Recently, diatomaceous weak layers have been hypothesized to play a role in triggering submarine landslides on passive continental margins by generating overpressure.
Wyatt Scott, Julia S. Reece
wiley +1 more source
Mohr-Coulomb Failure Condition and the Direct Shear Test Revisited
An alternative critical plane orientation is proposed in the Mohr-Coulomb failure criterion for soils with an extreme property. Parameter identification from the direct shear test is extended to incude the lateral normal stress.
P. Řeřicha
doaj
Integrity Analysis of Cement Sheath in Annulus B of Vertical Section during Hydraulic Fracturing
In the process of shale gas development in China,the phenomenon of sustained casing pressure(SCP)is widespread,which seriously affects the wellhead safety and life cycle of shale gas wells.Taking a shale gas well as an example,combined with the rock ...
Zeng Bo +4 more
doaj
Abstract One promising potential site for extracting supercritical geothermal fluids is the Krafla volcano, Iceland, into which a borehole was drilled very close to a shallow rhyolite magma chamber at about 2 km depth. Besides the technical challenge to drill in this setting, the extreme temperature conditions of T > 900°C close to the magma body may ...
E. Rybacki +3 more
wiley +1 more source
Conventional methods for determining the strength properties of rock are often costly and time-consuming. This research presents an innovative approach using operational drilling data for the continuous, real-time estimation of rock strength parameters ...
K. Ebneali Heydari +3 more
doaj +1 more source
The Role of Fluids in Fault Mechanics: A 16‐Year Analysis of the Irpinia Seismicity (Southern Italy)
Abstract Fluids in the crust influence earthquake nucleation by affecting fault strength and rupture dynamics, but direct observations at seismogenic depths are rare. We study the Irpinia Fault System in Southern Italy, site of the 1980 M 6.9 earthquake, to understand how fluid overpressure, fault orientation, and regional stress control earthquake ...
G. M. Adinolfi +3 more
wiley +1 more source

