Results 111 to 120 of about 284,884 (329)

Characterization of the permeability evolution of hard and soft rocks under hydro‐mechanical coupling conditions

open access: yesDeep Underground Science and Engineering, EarlyView.
The permeability variation of rocks during complete stress–strain processes was investigated. A mathematical model describing the influence of rock damage on permeability was constructed. The permeability–stress relationship between soft rock and hard rock was proposed.
Zhen Huang   +6 more
wiley   +1 more source

Strain‐based modeling and analysis for rock blasting and geomechanics applications

open access: yesDeep Underground Science and Engineering, EarlyView.
This paper introduces a novel strain‐based modeling approach for blasting and geomechanical applications, using measurable variables like particle velocity, strain, and displacement. By bypassing complex constitutive relations, strain‐based models capture critical blasting trends and full‐blast design parameters with minimal calibration.
Ruilin Yang
wiley   +1 more source

Rock magnetic and geochemical evidence for authigenic magnetite formation via iron reduction in coal-bearing sediments offshore Shimokita Peninsula, Japan (IODP Site C0020) [PDF]

open access: yes, 2017
Sediments recovered at Integrated Ocean Drilling Program (IODP) Site C0020, in a fore‐arc basin offshore Shimokita Peninsula, Japan, include numerous coal beds (0.3–7 m thick) that are associated with a transition from a terrestrial to marine ...
Clyde, William C.   +6 more
core   +1 more source

Perspective chapter: Application of gyroscopes in geophysics

open access: hybrid, 2023
Yanjun Chen   +4 more
openalex   +2 more sources

Effects of joint geometric configurations on cyclic shear behavior of intermittent joints under constant normal stiffness conditions

open access: yesDeep Underground Science and Engineering, EarlyView.
The present manuscript explored the effects of joint configurations on the cyclic shear behavior of intermittent joints for the first time. The cyclic shear response, shear strength degradation, dilation characteristics evolution, frictional property, fractal dimension, and dissipative energy were further analyzed during shear cycles, which is crucial ...
Bin Wang   +3 more
wiley   +1 more source

Düzce İli Karaçörtlen Köyü Yolu Hattı Heyelan Riskinin Jeofizik Yöntemlerle Araştırılması

open access: yesDüzce Üniversitesi Bilim ve Teknoloji Dergisi, 2013
Düzce İli, Çilimli ilçesi, Karaçörtlen Köyü Yolu üzeri 5-5,5km’sinde A1(40° 54.756'K enlemi ve 31°1.066'E boylamı) ile A2(40° 54.660'K-31° 1.052'E) noktaları arasında kalan 180 metrelik yol hattı boyunca kayma yüzeyi derinliği, yer altı suyunu kalınlığı ...
Ali Ateş
doaj  

Probability prediction of true‐triaxial compressive strength of intact rocks based on the improved PSO‐RVM model

open access: yesDeep Underground Science and Engineering, EarlyView.
In this work, we propose an improved particle swarm optimization (PSO) algorithm and develop an improved PSO‐relevance vector machine (RVM) model as a substitute for traditional true‐triaxial testing. The model's high prediction accuracy was validated through comparisons with two other machine learning methods and five three‐dimensional Hoek–Brown type
Qi Zhang   +4 more
wiley   +1 more source

Evaluación magnetométrica, radiométrica y geoeléctrica de depósitos esmeraldíferos

open access: yesEarth Sciences Research Journal, 2003
<p class="MsoNormal" style="margin: 0cm 0cm 10pt;"><span style="line-height: 115%; font-family: ";Arial";,";sans-serif";; font-size: 12pt; mso-ansi-language: EN-US;" lang="EN-US">This paper presents the results of the Geophysical exploration ...
Ochoa Gutiérrez Luis Hernán
doaj  

Mechanical property variation mechanisms of granite subjected to real‐time high temperatures and subsequent cooling treatment

open access: yesDeep Underground Science and Engineering, EarlyView.
This study investigates the coupled thermo‐mechanical behavior of granite during heating and cooling through a combination of laboratory tests and finite element analysis. The thermal conductivity, mineral composition, mass loss rate, micro‐crack observation, and thermal fracture characteristics of granite under various temperature conditions are ...
Rui Pang   +8 more
wiley   +1 more source

Hybridizing matter-wave and classical accelerometers

open access: yes, 2014
We demonstrate a hybrid accelerometer that benefits from the advantages of both conventional and atomic sensors in terms of bandwidth (DC to 430 Hz) and long term stability. First, the use of a real time correction of the atom interferometer phase by the
Hardin, Thomas   +6 more
core   +2 more sources

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