Irfan, Muhammad Rasool, Ali Murtaza Aziz, Mubashir Ali, Umair Niazi, Fawad Uchimura, Taro
Published in
Studia Geotechnica et Mechanica
The relationship between the soil water characteristic curve (SWCC) and the mechanical behavior of unsaturated soil is imperative and has been well investigated. However, the correlation between elastic wave velocity along the wetting and drying paths of SWCC is largely unknown due to the nonavailability of a standard experimental setup for such a ...
kim;, ji-won
The presence of gouge in rock joints significantly affects the physical and mechanical properties of the host rock mass. Wave-based exploration techniques have been widely used to investigate the effects of gouge fill on rock mass properties. Previous research on wave propagation in gouge-filled joints focused on analytical and theoretical methods....
Shumkin, E. A.
Published in
Moscow University Geology Bulletin
AbstractThe assessment of the water-physical parameters of soils by indirect geophysical indicators is rather simple and enables the characterization of environmental objects of various volumes. This article presents the results of the determination of kinematic parameters of elastic waves in clay soils with different values of the liquidity index....
Trishina, O. M. Gorbatsevich, F. F. Kovalevsky, M. V.
Published in
Acoustical Physics
The article compares the elastic anisotropic properties of samples recovered from the Kola Superdeep Borehole (SD-3 ). Samples were recovered from the Proterozoic and Archean layers. The petrophysical properties of rock samples from the Proterozoic layer of the SD-3 section (0–6842 m; metatuffs or metatuff schists, schists, gabbro diabases, metadia...
Hisano, Naoki Sakamaki, Tatsuya Ohashi, Tomonori Funakoshi, Ken-ichi Higo, Yuji Shibazaki, Yuki Suzuki, Akio
Published in
American Mineralogist
X‑ray diffraction analysis and ultrasonic measurements of a glass with the pyrope composition were conducted to determine its structural and elastic properties at pressures from 1 atm to 12.9 GPa. Our results indicate that its structural evolution is closely related to changes in the compression wave velocity (VP), shear wave velocity (VS), and Poi...
Evstifeeva, V. V. Litovchenko, V. N. Mishakin, V. V. Vorobyev, R. A.
Published in
Inorganic Materials: Applied Research
AbstractThe results of studies on the effects of tempering temperature on the static strength and crack resistance of 38KhN3MFA-Sh steel are presented. The fractured surface texture has been studied after different heat treatment modes using electron fractography analysis. Relationships between the fracture characteristics and the critical stress i...
Zhukov, V. S. Kuzmin, Yu. O.
Published in
Izvestiya, Physics of the Solid Earth
It is shown that rigidity of the medium is a more strain-sensitive parameter than rock density for the elastic wave velocity with the increase in the depth. For assessing the effect of intergrain and fracture porosity, the ratio (in percent) of the measured P-wave velocity in the rock to the velocity in the solid matrix—the “normalized velocity”—is...
Xu, Song Su, Yuan-Da Tang, Xiao-Ming
Published in
Applied Geophysics
Currently, most rock physics models, used for evaluating the elastic properties of cracked or fractured media, take into account the crack properties, but not the background anisotropy. This creats the errors of in the anisotropy estimates by using field logging data. In this work, based on the scattered wavefield theory, a sphere-equivalency metho...
Boussaid, Mohamed Salah Mallet, Céline Beck, Kévin Jodry, Clara
We study damage induced by low temperature variations in granite samples given their role in shallow geological reservoirs. We consider two thermal treatments, slow cooling and thermal shock, and implement a multi-geophysical approach to characterize the induced micro-scale damage. The methodology consists in monitoring elastic wave velocity and th...
Li, Dong Zhang, Jun-fei Wang, Cun-wen Jiang, Fu-xing
Published in
International Journal of Minerals, Metallurgy, and Materials
Microseismic monitoring has been widely used in mines for monitoring and predicting dynamic disasters such as rockbursts and waterbursts. However, to develop high-precision microseismic monitoring systems, the propagation patterns of microseismic waves under complex geological conditions must be elucidated. To achieve this aim, a simulation model o...
